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DESIGN AND CONSTRUCTION OF GAS PIPELINES FROM POLYETHYLENE PIPES WITH A DIAMETER OF UP TO 300 MM - SP 42-101-96 (2019) Current in 2018

9. INPUT INSPECTION OF PIPES AND CONNECTING PARTS

9.1. Each batch of pipes and connecting parts must be accompanied by a document (certificate) from the manufacturer (or a copy certified by the owner of the certificate) confirming their compliance with the requirements of the technical specifications. The certificate must contain the name and trademark of the enterprise, batch number, product designation, batch volume (m, pcs, kg), test results or confirmation of compliance with the requirements of the standard or specifications, batch release date.

There must be markings on the surface of pipes and connecting parts (see clause 3.7).

9.2. When a batch of pipes arrives at construction projects it is necessary to carry out incoming quality control of pipes and connecting parts, the purpose of which is to determine the suitability of a given batch for the construction of gas pipelines. Pipes must be fastened into bags or coils.

9.3. Incoming inspection should consist of determining: the appearance of the surface and the dimensions of pipes and parts. If there are any doubts about the quality of materials received at the construction site polyethylene pipes It is recommended to additionally carry out random testing of samples to determine the value, tensile yield strength and elongation at break. Mechanical tests must be carried out by laboratories of construction and installation organizations or under contracts with testing centers.

9.4. For input control a certain percentage is selected depending on the diameter:

d_e 225 mm - 2% of pipes or connecting parts from the batch

d_e 160 and 110 mm - 1% -"-

d_e 63 and 40 mm - 0.5% -"-

d_e 32 and 20 mm - 0.25% -"-

In any case, the number of pipes must be at least 5 pieces.

When using pipes in coils for incoming inspection, it is necessary to provide a piece of pipe with a length of at least 2 m, sufficient for the production of at least 25 samples.

9.5. In appearance, the pipes must have a smooth outer and inner surface. Minor longitudinal stripes and waviness are allowed, which do not take the wall thickness beyond the limits of permissible deviations (Appendix 6); Bubbles, as well as other individual defects in accordance with GOST 24105 with a depth of more than 0.7 mm, are not allowed on the surface and at the ends of the pipes.

9.6. The internal and external surfaces of the connecting parts must be free of cracks, swelling, burns, cavities, inclusions and other damage. Minor traces from the forming tool are allowed, traces machining and cold joints, protrusions from remote sprues on connecting surfaces are no more than 0.5 mm, and on other surfaces - no more than 3 mm.

9.7. The appearance of the surface of pipes and parts is determined visually without the use of magnifying devices. The depth of defects is determined using a dial indicator with a division value of 0.01 mm.

9.8. The dimensions of pipes and parts (diameters, wall thicknesses) are determined at a temperature of (23±5)°C. Before measurement, the samples are kept at the specified temperature for at least 2 hours.

The outer diameter d_e of pipes is measured on five samples in three sections of each sample at a distance of at least 150 mm from the ends.

The outer diameter of the connecting ends of the parts is measured at each end of at least five parts at a distance of 5 mm from the ends.

For pipes and parts with a diameter of 160 mm or less, the value d_e is determined as the arithmetic mean of measurements of the maximum and minimum diameters in two mutually perpendicular directions in one section. Measurements are carried out with a GOST 166430 caliper or a GOST 7507-78 micrometer of types MT and MK with an error of 0.1 mm.

For pipes and parts with a diameter of more than 160 mm, the d_e value is calculated using the formula:

where: P - perimeter (mm), measured with a GOST 7502-80 tape measure with an error of 0.5 mm;

T is the thickness of the tape measure (mm), measured with a micrometer with an error of 0.01 mm.

9.9. Wall thickness is measured with a wall gauge indicator GOST 11951, or a micrometer type MT GOST 6507-78 with an error of up to 0.01 mm at four points evenly distributed around the circumference:

for pipes - at both ends of each pipe at a distance of 10 mm from the end (at least 5 pipes);

For parts - at each connecting end there are at least five parts at a distance of 5 mm from the end (at least 5 parts).

9.10. The calculated average values ​​of de and each of the wall thickness measurements should not go beyond the permissible deviations regulated by the relevant specifications for pipes and connecting parts.

9.11. Tensile yield strength (delta_rt) and relative elongation at break (E_pp) are determined for pipe material according to GOST 11262-80 on samples from the corresponding number of samples taken according to clause 9.4.

For pipes supplied according to TU 6-19-352-87 and TU 6-49-04719662-120-94, tests are carried out on sample blades of type 1 GOST 11262-80, with a nominal pipe wall thickness of up to 6 mm, and type 2 , with a nominal pipe wall thickness of over 6 mm.

For pipes supplied in accordance with GOST R 50838-95, tests are carried out on sample blades of type 2 GOST 11262-80.

For pipes with an outer diameter of up to 20 mm, tests can be carried out on samples in the form of a pipe section with a length of 160 ± 5 mm. To fix the sample in testing machine clamps of the appropriate shape are used, and plugs 30 mm long made of elastic material (for example, rubber) are inserted into the sample at both ends to avoid crushing.

The thickness of the sample blade is assumed to be equal to the thickness of the pipe wall (without eliminating the curvature of the surface).

To produce sample blades, nozzles 160+5 mm long are cut from pipes selected for testing, from which samples are cut out with a punch or by mechanical processing (milling) so that their longitudinal axis is parallel to the generatrix of the pipe. When the pipe wall thickness is more than 10 mm, blade samples are produced only by mechanical processing.

Tests are carried out at a temperature of 23±2°C on tensile testing machines, for example, types 2054-R5, 2099-R5, IR5047-50 and others, which provide load measurement with an error of no more than 1% of the measured value.

The speed of movement of the clamps and tensile testing machine when testing pipes supplied according to TU 6-19-352-87 is 50±5.0 mm/min for samples with nominal thickness walls less than 6 mm and 25±2.0 mm/min – for samples with a nominal wall thickness of 6 mm or more.

For pipes supplied in accordance with GOST R 50838-95 and TU 6-49-04719662-120-94, the speed is 100±10.0 mm/min for samples with a nominal wall thickness of up to 10 mm and 25±2.0 mm/ min for samples with a nominal wall thickness of 10 mm or more.

9.12. The test result should be taken as follows:

the arithmetic mean value of the yield strength and the minimum value of relative elongation - for pipes supplied according to TU 6-19-352-87;

The minimum values ​​of the yield strength and relative elongation are for pipes supplied in accordance with GOST R 50838-95 and TU 6-49-04719662-120-94.

The tensile yield strength must be no less than 15 MPa (152 kgf/cm2) for pipes made of PE 80 (PSP) according to TU 6-49-04719662-120-94 and no less than 19 MPa (193 kgf/cm2) for pipes made of PE 63 (HDPE) according to TU 6-19-352-87. The relative elongation for the specified pipe materials must be at least 350%.

9.13. If unsatisfactory results are obtained for at least one of the indicators (appearance, size and mechanical properties) this indicator is monitored again on a double number of samples taken from the same batch. In case of repeated unsatisfactory results, control tests are carried out in the presence of a representative of the manufacturer of the given batch of pipes (parts).

9.14. Based on the results of the incoming inspection, a protocol is drawn up (the recommended form of the protocol is given in Appendix 16), which is part of the documentation presented to the acceptance committee when putting the facility into operation.

9.15. If expired guarantee period storage of pipes or connecting parts specified in the technical specifications, then a conclusion on the suitability of pipes or connecting parts for the construction of gas pipelines can be issued either by the manufacturer or by a testing laboratory accredited by the Gosstandart authorities of Russia, after conducting a set of tests regulated by the technical specifications for pipes or details.

9.16. Incoming inspection of pipes and connecting parts supplied abroad is also carried out according to clause 9.4, taking into account the requirements of the technical conditions for delivery.

When organizing pipelines, bends, technological piping, pumping and water supply stations, main gas pipelines etc., required incoming inspection of pipe products.

To carry out control, a technological map is drawn up.

The technological map contains the name of the organization, facility, and instruments used to measure parameters during acceptance. During incoming inspection, pipes and parts welded to them are checked for compliance with the design, technical standards and contractual obligations.

At exhibitions you can see stands with a description of the design of incoming control.

Technological map of incoming inspection of pipe products

A technological map is a standard document, but the detailing is not limited to special requirements; for each object it can be different as needed. The report is provided to foremen, contractors, and technical supervision.

The technological map for incoming inspection of pipe products includes the following types works:

• checking the accompanying documentation of pipe products,


• visual inspection of the quality and completeness of the package,


• checking compliance with storage standards.

The main purpose of incoming control is to prevent the launch of a facility using low-quality products. It is also important to obtain reliable data for assessment real quality in order to compare the expected result with the actual one. Control methods are determined by GOST.

At the incoming inspection, the presence of a quality control inspection is checked. Testing is also part of the process.

Before the start of incoming inspection, an action plan is approved, which, as a rule, includes 2 stages:

1. Performed visually at the time of unloading quality characteristics and by counting on a quantitative basis.
2. Control using tools, which you can familiarize yourself with at our exhibition.

Incoming inspection is carried out by checking all accompanying documentation about the product, compliance with the technical standards of the finished product of its individual parts and materials. The severity of control is determined by the construction manager of the facility.

In addition to visual control, counting and measuring parameters, you will need to design necessary documentation and compliance with labor safety rules and regulations in order to consider the inspection completely completed.

Visual inspection is carried out outside the product. Usually they look for the presence of metal breaks, cracks, bookmarks, clamps, dents, thinning, thickening, pores, delamination, fistulas, unwelded seams, waviness, deep scratches, stripping, displacement, presence protective film etc.

This procedure is carried out for each batch of products upon acceptance and delivery. In this case, the batch must consist of products of the same size and identical properties.

Products must have similar temperature treatment characteristics. Each party must have its own passport.

By special agreement of suppliers and receivers of products, documents containing data on additional checks, studies, measurements, samples, etc. may be attached to the passport.

Passport of pipe products

The passport of a batch of products or one product must contain the following data:

• product name,


• product or batch number,


• symbols,


• number and date of technical specifications or state standard, which were used to produce tubular products,


• name of the manufacturer's company and its legal address,


• notes on the properties of the metal used in production,


• pressure that the product can withstand, guaranteed by the manufacturer and specifications,


• number of products in one batch,


• the mass of the entire batch (in kg), and the mass of one product.

The annex to the passport must indicate the characteristics of the material from which the products are made: steel thickness, symbols, number and date of additional and main tests, name of the manufacturing company and its address.

Additionally, the passport may indicate: bending angles of products, diameter, type of metal, grades, customer data, chemical composition. Also, the passport may be accompanied by documents confirming the material data specified in the passport or copies thereof provided by the supplier.

They may indicate the strength class, category, special parameters, conditions, etc. Products and documents may indicate trademark supplier, if deliveries are not made directly from the manufacturer.

Read our other articles.

Technical task

for quality control of pipe products.

1. General provisions.

1.1. The purpose of the inspection is to ensure the manufacture and delivery of pipe products in strict accordance with the requirements " Guidelines on the quality of pipe products, design and construction of the Company's field pipelines in order to ensure their integrity "M-01.06.06-05 oil", standards, specifications and other documents specified in the purchase order.

1.2. The inspection is carried out by contractor, meeting the requirements of clause 7.8. "Guidelines for the quality of pipe products, design and construction of the Company's field pipelines in order to ensure their integrity" M-01.06.06-05 oil"

1.3. The organization performing the inspection must send to the enterprises personnel who have the necessary level of training and experience in accepting pipe products. The inspector must know technical requirements to the quality of pipes.

1.4. When conducting an inspection, inspectors should be guided by:

Requirements of the contract for the supply of products;

Requirements of standards for pigment materials;

Requirements of standards for manufactured products;

Requirements of testing methods and standards in force at the manufacturer;

Requirements of the current rules for the transportation of goods by rail.

Manufacturer's management and quality control system;

The existing system for loading pipe products into railway cars to eliminate the possibility of damage to pipes and jamming of bevels during transportation.

3.2.2 Develop, together with the manufacturer, and approve the following documentation with the Customer:

- Regulations for inspection control– a document defining the functions and responsibilities of the inspection, the procedure for organizing interaction between the inspection and the services of the manufacturer when carrying out inspection control of pipes and the scope of control at each point of the technological chain, as well as the procedure for sampling for incoming inspection, acceptance tests and control tests of pipe products;

Production process specification (MPS) is a document containing a description of the technological routes used in the manufacture of pipe products and the corresponding methods and control points. The manufacturing process specification must include, as a minimum, the following information:

Delivery and incoming inspection of rolled products/workpieces

Steel production process.

Target steel chemical composition and permissible range of variation

Steel casting method

Pipe production method (rolling, welding)

Way heat treatment pipes

Technological control methods and points

Hydrostatic test

Non-destructive testing of pipes

Methods and scope of acceptance tests.

Acceptance Criteria

Labeling and packaging

Traceability

- Standard Production and Inspection Plan (SIP)– a document regulating the inspected characteristics and acceptance criteria in each technological and control operation, as well as the actions of the inspector in case of technology violations or other inconsistencies.

3.2.3 At the Customer’s request, develop, coordinate with the manufacturer and approve the following documentation from the Customer:

- Extended testing program for the first day of production - a document regulating the procedure for extended tests performed at the beginning of production of inspected orders. The purpose of extensive testing on the first day of production is to ensure that the requirements regulatory documentation specified in the supply contract can be fully implemented using the technological route proposed by the manufacturer. Extended tests on the first day of production should include the determination of all characteristics provided for by regulatory documentation (GOST, TU) for pipe products on an increased sample of pipes. In addition, extended testing may include a number of additional requirements.

3.2.4 At the Customer’s request, conduct an inspection of extended tests on the first day of production in accordance with the developed program. In case of obtaining results that do not satisfy the regulatory documentation specified in the supply contract, inform the “Customer”.

4. Preparation for inspection of the next order.

4.1 The inspecting organization must be notified by the “Customer”. about the quantity, type - size, manufacturer of pipe products in accordance with the signed specification.

4.2 After receiving the notification but before starting to execute the order, specialists of the inspecting organization must study:

Regulatory and technical documentation related to the production of this order;

Technological instructions and technological maps and other regulatory and technical documents of the manufacturer related to this order;

4.3 If necessary, adjustments are made to the standard PPI and SPP.

5. Inspection control over production.

5.1 The inspection must be carried out around the clock in accordance with the manufacturer’s schedule.

5.2 When manufacturing products, inspectors must carry out the scope of work indicated in Tables 1-6. The scope of work can be adjusted in accordance with the requirements of the contract for the supply of pipe products. The specific scope of work is determined in accordance with the production and inspection plan (PIP)

Table 1 - The scope of work performed during the inspection of steel electric-welded oil and gas pipelines performed by high-frequency welding.

Table 2 - The scope of work performed during the inspection of steel electric-welded oil and gas pipelines made by submerged arc welding.

Table 3 -Scope of work performed during inspection of hot-deformed steel oil and gas pipelines.

Table 4 -Scope of work performed during coating application control.

Table 5 -Scope of work performed during inspection of rolled (strip) production for electric welded pipes.

*The number and order of technological operations and the scope of control may vary depending on the production technology and order requirements.

Table 6 - The scope of work performed during the inspection of steel electric-welded oil and gas pipelines performed by high-frequency welding with coating.

6. Acceptance of products.

6.1 Acceptance of products by the Inspector is carried out in accordance with the PPI agreed with the plant and approved in in the prescribed manner"Customer" of pipe products.

6.2 If deviations in the technological process from the requirements of regulatory documentation are identified, as well as when deviations in test technology or measurement inaccuracies are identified, the Inspector must demand immediate correction of the comments and schedule re-testing of the accepted products. If necessary, a report is drawn up with the participation of representatives of the workshop quality control department and the workshop management.

6.3 If the deviations specified in clause 6.2 were not eliminated or resolved during the production process, the Inspector issues a notification addressed to the Head of the Quality Control Department for consideration and implementation of actions by the plant in accordance with the standards of the quality management system adopted at the enterprise and notifies "Customer". The shipment of controversial pipe products must be suspended until the “Customer” makes a decision on its further use.

6.4 If, during the acceptance of products, the Inspector identifies imperfections in the technological chain used, test methods or regulatory documentation according to which the order is manufactured, which may have a critical impact on the quality of the product, the “Contractor” must immediately notify the “Customer” about this. .

6.5 The fact of product acceptance is confirmed by the signature and seal of the inspecting organization in each official copy of the quality certificate prepared by the manufacturer.

7. Traceability of products after they have been shipped from the manufacturer

7.1 The “Contractor” must become familiar with the product acceptance system at the “Customer’s” facilities (warehouses, pipe depots, etc.) and with the “Customer’s” oil pipeline pipe traceability system.

7.2 If the “Customer” identifies products that have passed inspection control and are of questionable or inadequate quality, the “Contractor” must immediately send an authorized representative to the “Customer” to establish the reasons for the supply of products of inadequate quality, participate in filing a claim with the manufacturer and/or “ To the performer."

8. Conducting control tests of pipe products at the initiative of the inspection.

8.1. The purpose of the control tests is to assess the compliance of pipe products shipped from the manufacturer with the regulatory documentation specified in the supply contract, taking into account the additional requirements of the “Customer”.

8.2. Control tests are carried out in the laboratory of the Inspectorate or any other independent accredited laboratory in the following cases:

Periodically, at least once a month for each technological chain used at a given manufacturing plant;

At the initiative of the inspection, if the inspection has good reasons. A good reason may be: a change in the technological chain, a change in the supplier of the conversion material, which has a significant impact on the quality of the finished product, the development of a new type of product, during repeated acceptance tests, etc.;

If it is impossible for the plant to carry out periodic corrosion tests provided for by the technical specifications;

At the request of the “Customer”.

8.3. Carrying out control tests must be agreed upon with the “Customer”.

8.4. Samples for control tests are taken at the manufacturer of pipe products and are accompanied by a selection certificate.

8.5. When conducting control tests, acceptance rules, control and testing methods, quality assessment standards specified in the relevant technical specifications or GOST are applied.

8.6. The inspection must notify the manufacturer of the time and place of the control tests. The manufacturer has the right to send its representatives to monitor the progress of control tests.

SIGNATURES OF THE PARTIES:

INPUT CONTROL OF PRODUCTS

BASIC POINTS

GOST 24297-87

PUBLISHING HOUSE OF STANDARDS

Moscow

STATE STANDARD OF THE USSR UNION

Date of introduction 01.01.88

This standard establishes the basic provisions for the organization, conduct and registration of the results of incoming inspection of raw materials, materials, semi-finished products and components (hereinafter referred to as products) used for the development, production, operation and repair of industrial products.

1. GENERAL PROVISIONS

1.12. The decision to tighten, weaken or cancel incoming control is made by the consumer in agreement with the State Acceptance and the customer’s representative office based on the results of incoming control for the previous period or the results of operation (consumption) of the product.

2. ORGANIZATION OF INPUT CONTROL

2.1. Incoming inspection is carried out by the incoming inspection unit, which is part of the technical control service of the enterprise (association).

2.2. The main tasks of incoming control are:

1) checking the availability of accompanying documentation for the products, certifying the quality and completeness of the products;

2) control of compliance of the quality and completeness of products with the requirements of design and regulatory technical documentation and its application in accordance with permit protocols;

3) accumulation of statistical data on the actual level of quality of the resulting products and development on this basis of proposals to improve the quality and, if necessary, revise the requirements of the technical documentation for products;

4) periodic monitoring of compliance with the rules and shelf life of suppliers’ products.

Workplaces and personnel performing entry control must be certified in the prescribed manner.

Measuring instruments and testing equipment used during incoming inspection are selected in accordance with the requirements of the normative and technical documentation for controlled products and GOST 8.002-86. If metrological means and control methods differ from those specified in the technical documentation, then the consumer agrees on the technical characteristics of the means and control methods used with the supplier, State Acceptance and (or) with the customer’s representative office.

To carry out tests, inspections and analyzes related to incoming inspection, products can be transferred to other divisions of the enterprise (laboratories, control and testing stations, etc.).

3. PROCEDURE FOR CONDUCTING INPUT CONTROL

3.1. Products accepted by the quality control department, the customer's representative office, the State acceptance of the supplier enterprise and received with accompanying documentation drawn up in the prescribed manner are allowed for incoming inspection.

3.2. When conducting incoming inspection it is necessary:

1) check the accompanying documents certifying the quality of the products and register the products in the journals for recording the results of incoming inspection ();

2) control the selection of samples or samples by warehouse workers, check the completeness, packaging, labeling, appearance and fill out the sampling or sampling report;

3) carry out quality control of products according to technological process input control or transfer samples or samples for testing (analysis) to the appropriate department.

3.3. The department that received samples or samples for testing (analysis) conducts tests within the established time frame and issues a conclusion to the incoming control department about the compliance of the tested samples or samples with the established requirements.

3.4. Test or analysis results ( physical and mechanical properties, chemical composition, structure, etc.) must be transferred to production along with tested products.

3.5. Products accepted based on the results of incoming inspection must be transferred to production with the appropriate mark in the accounting or accompanying documents.

Marking (stamping) of accepted products is allowed.

3.6. Products received from the supplier before incoming inspection must be stored separately from those accepted and rejected by incoming inspection.

3.7. Products rejected during incoming inspection must be marked “Defective” and sent to a defective isolator.

4. REGISTRATION OF INPUT CONTROL RESULTS

4.1. Based on the results of the incoming inspection, they draw up a conclusion on the product’s compliance with the established requirements and fill out a logbook for recording the results of the incoming inspection.

4.2. In the accompanying documents for the products, a note is made about the incoming inspection and its results, and the products are marked (branded), if this is provided for in the list of products subject to incoming inspection.

4.3. If the product meets the established requirements, the incoming control department makes a decision to transfer it to production.

If non-compliance with the established requirements is detected during the incoming inspection, the products are rejected and returned to the supplier with a complaint.

If you repeatedly receive low-quality products or receive them in large quantities, the consumer reports this to the territorial body of the Prosecutor's Office at the location of the supplier.

4.4. Based on the results of the incoming inspection, the consumer, if necessary, informs the supplier’s ministry, the customer’s representative office and (or) the State Acceptance Authority at the supplier enterprise about the non-compliance of the products with the established requirements, and in the absence of the latter - the territorial body of Gosstandart at the location of the supplier to take measures in accordance with those assigned to them functions ().

4.5. For electrical radio products accepted by the customer's representative office, information is sent to the customer's head institute for these products ().

departmental subordination of the enterprise

INTELLIGENCE

on the supply of raw materials, materials, semi-finished products and components in violation of the requirements of scientific and technical documentation (TU standards) for the period from _______________________ to ___________________

Note. If materials and components are accepted by the State Acceptance Office or the customer’s representative office, this is indicated in the note.

APPENDIX 3

mandatory

Information submission form

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the USSR State Committee for Standards

DEVELOPERS

M. G. Iofin(topic leader); L. V. Ermilova(topic leader); Y. G. Ostapchuk, Ph.D. tech. sciences; A. A. Bogatyrev, Ph.D. economy sciences; I. I. Chaika, Ph.D. economy sciences; S. G. Atamas; S. A. Afonin; Yu. F. Afanasyeva; K. V. Lebedev, Ph.D. Tech. sciences; Yu. S. Vartanyan, Ph.D. tech. Sci.

2. APPROVED AND ENTERED INTO EFFECT by the Resolution State Committee USSR according to standards dated 06/04/87 No. 1809.

3. INSTEAD GOST 24297-80

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

5. Reissue. April 1993

INPUT INSPECTION OF STEEL PIPES AND CONNECTING PARTS

LIST OF REGULATIVE DOCUMENTS

GOST 10705-80* Electric-welded steel pipes. Technical conditions.

GOST 10704-91 Electric-welded straight-seam steel pipes. Assortment.

GOST 20295-85 Welded steel pipes for main gas and oil pipelines. Technical conditions.

GOST 10706-76* Electric-welded straight-seam steel pipes. Technical conditions.

GOST 8696-74* Electric-welded steel pipes with a spiral seam general purpose. Technical conditions.

GOST 8731-74* Hot-deformed seamless steel pipes. Technical conditions.

GOST 8732-78* Hot-deformed seamless steel pipes. Assortment.

GOST 8733-74* Cold-deformed and heat-deformed seamless steel pipes. Technical conditions.

GOST 8734-75* Seamless cold-deformed steel pipes. Assortment.

GOST 3262-75* Steel water and gas pipes. Technical conditions.

TU 1104-137300-357-01-96 Steel water and gas pipes.

TU 14-3-943-80 Electric-welded steel pipes.

TU 14-3-190-82 Seamless steel pipes for boiler plants and pipelines.

TU 14-3-1399-95 Electric-welded steel pipes.

TU 14-3r-13-95 Electric-welded straight-seam steel pipes with a diameter from 20 to 159 mm.

TU 1390-002-01297858-96 Steel pipes with an external anti-corrosion coating made of extruded polyethylene (JSC VNIIST, AKH named after K.D. Pamfilov, Moscow, CJSC ISOPIPE, Ryazan).

TU 1390-001-21042669-98 Steel pipes with a diameter of 57530 mm with an outer coating based on extruded polyethylene (Liniya LLP, Moscow).

TU 1390-003-11928001-2001 Steel pipes with an outer two-layer coating based on extruded polyethylene (Druza JSC, Orenburg)

TU 1390-003-01297858-2003 Steel pipes with a diameter of 89-530 mm with an external anti-corrosion coating made of extruded polyethylene (ZAO "ISOPIPE", Ryazan, ZAO VNIIST-TSAPTR, Moscow).

TU 1390-003-01297858-99 Steel pipes with an outer two-layer coating based on extruded polyethylene (Mapik LLC, Moscow).

TU 1390-005-01297858-98 Steel pipes with an outer two-layer protective coating based on extruded polyethylene (JSC VNIIST, AKH named after K.D. Pamfilov. State Unitary Enterprise MOE pipe procurement plant, Moscow).

TU 1394-005-04005951-97 Steel pipes with an outer protective coating of extruded polyethylene with an outer diameter of 572020 mm (SUE "NIIMosstroy", State Unitary Enterprise MOETZK, Moscow).

TU 1394-009-04005951-99 Steel pipes with an outer two- and three-layer protective coating based on extruded polyethylene (JSC VNIIST, State Unitary Enterprise MOETZK, Moscow).

TU 1394-011-04005951-2000 Steel pipes with two- and three-layer outer protective coating based on extruded polypropylene (JSC VNIIST, State Unitary Enterprise MOETZK, Moscow).

TU 1394-016-04005951-2002 Steel pipes electric welded diameter from 57 to 720 mm with an external anti-corrosion polyethylene coating for gas pipelines (VNIIGAZ LLC, State Unitary Enterprise MOE Pipe Procurement Plant, Moscow).

TU 1394-017-04005951-2002 Electric-welded steel pipes with a diameter of 820 to 1420 mm with an external three-layer anti-corrosion polyethylene coating for main gas pipelines (VNIIGAZ LLC, State Unitary Enterprise MOE Pipe Procurement Plant, Moscow).

TU 1394-018-04005951-2002 Steel pipes with external protective epoxy coating(JSC VNIIST, Moscow, State Unitary Enterprise MOE Pipe Manufacturing Plant).

TU 1394-020-04005951-2003 Steel pipes with an outer three-layer and two-layer polyethylene coating for the construction of main oil pipelines (JSC "VNIIST-TSAPTR", Moscow, State Unitary Enterprise MOE Pipe Procurement Plant).

TU 1468-006-01297858-2001 External polyurethane coating for anti-corrosion protection of parts of connecting units and pipeline units with a diameter of 108 to 1420 mm (JSC VNIIST, Moscow, State Unitary Enterprise MOE Pipe Procurement Plant).

TU 1469-002-04834179-2001 Connecting parts and assemblies of pipelines with a diameter from 219 to 1420 mm with external anti-corrosion polyurethane coating(VNIIGAZ LLC, Trubodetal OJSC, Chelyabinsk).

TU 1469-004-04834179-2002 Connecting parts and assemblies of pipelines with a diameter of 325 to 1420 mm with an external anti-corrosion polyurethane coating (JSC VNIIST, Moscow, JSC Trubodetal, Chelyabinsk).

TU 1390-006-01297858-99 Steel pipes with an outer two-layer protective coating based on extruded polyethylene (JSC VNIIST, Moscow).

TU 1390-008-01297858-2002 Pipes and welded pipe sections with a diameter of 114720 mm with an external anti-corrosion coating based on extruded polyethylene (JSC VNIIST, Moscow).

TU 1390-001-00186654-99 Electric-welded straight-seam steel pipes with a diameter of 508-1420 mm with an external protective coating based on extruded polyethylene (JSC "VNIIST", Moscow).

TU 1390-003-00154341-98 Electric-welded and seamless steel pipes with an external two-layer anti-corrosion coating based on extruded polyethylene (JSC VNIIST, Moscow, LLC Uraltransgaz, LLC "Truboplast Enterprise", Yekaterinburg).

TU 1390-004-32256008-2003 Steel pipes with a diameter of 57530 mm with an outer two- and three-layer protective coating based on extruded polyethylene (ZAO VNIIST-TSAPTR, Moscow, LLC "Truboplast Enterprise", Yekaterinburg).

TU 1390-008-00154341-2002 Steel pipes with a diameter of 57530 mm with an external three-layer anti-corrosion coating based on extruded polyethylene (Uraltransgaz LLC, Truboplast Enterprise LLC, Yekaterinburg).

TU 1390-012-00154341-2002 Steel pipes with a diameter of 102530 mm with an internal protective coating based on epoxy powder compositions (Uraltransgaz LLC, Truboplast Enterprise LLC, Yekaterinburg).

TU 1390-001-01284695-2000 Steel pipes with internal epoxy coating "CORON" (JSC "ATZ", Almetyevsk, Tatarstan).

TU 1390-002-01284695-97 Steel pipes with an external anti-corrosion coating based on extruded polyethylene (JSC "ATZ", Almetyevsk, Tatarstan).

TU 1390-003-01284695-2000 Steel pipes with an external anti-corrosion coating based on extruded polyethylene (JSC VNIIST, AKH named after K.D. Pamfilov, Moscow, JSC "ATZ", Almetyevsk, Tatarstan).

TU 1390-011-01284695-2003 Steel pipes with a diameter of 57530 mm with an outer two-layer and three-layer protective coating based on extruded polyethylene (ZAO VNIIST-TSAPTR, Moscow, OAO ATZ, Almetyevsk, Tatarstan).

TU 14-3R-33-2000 Electric-welded steel pipes with a diameter of 530 to 1420 mm with an external three-layer anti-corrosion polyethylene coating for main gas pipelines (VNIIGAZ LLC, Volzhsky Pipe Plant OJSC, Volzhsky, Volgograd region).

TU 14-3R-39-2000 Steel pipes with a two- and three-layer outer protective coating based on extruded polypropylene (JSC VNIIST, Moscow, JSC PA "VTZ", Volzhsky, Volgograd region).

TU 14-3R-49-2003 Seamless and welded steel pipes with a diameter of 102-1420 mm with an external protective coating based on extruded polyethylene (JSC "VNIIST-TSAPTR", Moscow, JSC PA "VTZ").

TU 14-3R-37-2000 Electric-welded straight-seam steel pipes with a diameter from 102 to 1220 mm with an outer coating based on extruded polyethylene (JSC "VMZ", Vyksa, Nizhny Novgorod region).

TU 14-3R-42-2000 Electric-welded steel pipes with a diameter of 102 to 426 mm with an external anti-corrosion polyethylene coating for gas pipelines (VNIIGAZ LLC, VMZ OJSC, Vyksa, Nizhny Novgorod region).

TU 14-3R-43-2000 Electric-welded steel pipes with a diameter of 508 to 1220 mm with an external three-layer anti-corrosion polyethylene coating for main gas pipelines (VNIIGAZ LLC, VMZ JSC, Vyksa, Nizhny Novgorod region).

TU 1469-004-01297858-2002 Cold bending curves of electric-welded steel pipes 530 and 1220 mm with insulating coating (JSC VNIIST, Moscow).

TU 14-3R-36-2000 Electric-welded steel pipes with a diameter of 508 to 1420 mm with an external three-layer anti-corrosion polyethylene coating for main gas pipelines (VNIIGAZ LLC, Chelyabinsk Pipe Rolling Plant OJSC, Chelyabinsk).

TU 14-3R-61-2002 Seamless and welded steel pipes with a diameter of 102-820 mm with an outer two-layer protective coating based on extruded polyethylene (JSC VNIIST, Moscow, JSC ChTPZ, Chelyabinsk, JSC VMZ, .Vyksa, Nizhny Novgorod region).

TU 14-3R-66-2003 Seamless and welded steel pipes with a diameter of 102-1420 mm with an external three-layer protective coating based on extruded polyethylene (JSC VNIIST, Moscow, JSC Chelyabinsk Pipe Rolling Plant, Chelyabinsk).

TU 1381-002-00154341-98 Electric-welded steel pipes with a diameter of 219-1420 mm with an external anti-corrosion polyethylene coating (Kopeysk Pipe Insulation Plant LLC, Kopeysk, Chelyabinsk region).

TU 1381-003-00154341-2000 Electric-welded steel pipes with a diameter of 219-1420 mm with an external three-layer anti-corrosion coating based on extruded polyethylene (Uraltransgaz LLC, Yekaterinburg, KZIT LLC, Kopeisk, Chelyabinsk region).

TU 1381-004-00154341-2000 Electric-welded steel pipes with a diameter of 219-1420 mm with an external two-layer anti-corrosion coating based on extruded polyethylene (Uraltransgaz LLC, Yekaterinburg, KZIT LLC, Kopeisk, Chelyabinsk region).

TU 1381-009-00154341-2002 Electric-welded steel pipes with a diameter of 219-720 mm with an outer protective two-layer coating based on extruded polyethylene (Uraltransgaz LLC, Yekaterinburg, VNIIGAZ LLC, KZIT LLC, Kopeisk, Chelyabinsk region).

TU 1381-010-00154341-2002 Electric-welded steel pipes with a diameter of 530-1420 mm with an external protective three-layer coating based on extruded polyethylene (Uraltransgaz LLC, Yekaterinburg, VNIIGAZ LLC, KZIT LLC, Kopeisk, Chelyabinsk region).

TU 1381-013-00154341-2002 Bent bends with an external protective polyethylene coating (Uraltransgaz LLC, Yekaterinburg, Kopeysk Pipe Insulation Plant LLC, Kopeisk, Chelyabinsk region).

TU 1381-002-00154341-98 Electric-welded steel pipes with a diameter of 530-1420 mm with an external anti-corrosion polyethylene coating (ZAO Uralremstroy, Chelyabinsk).

TU 4859-001-11775856-95 Steel pipes coated with polyethylene adhesive tapes (AKH named after K.D. Pamfilov, Moscow).

TU 1390-013-04001657-98 Pipes with a diameter of 57530 mm with an external combined tape-polyethylene coating (AKH named after K.D. Pamfilov, Moscow).

TU 1390-014-05111644-98 Pipes with a diameter of 57530 mm with an external combined tape-polyethylene coating (AKH named after K.D. Pamfilov, LLC Firm BOOS-M, Moscow, State Unitary Enterprise MO Mosoblgaz, Klinsky Plant pipe insulation, Klin, Moscow region).

TU 1394-017-50172433-2002 Steel pipes with a diameter of 57-530 mm with an outer two-layer coating based on extruded polyethylene (AKH, Klin Pipe Insulation Plant, Klin, Moscow region).

TU 1394-016-04001657-2001 Steel pipes with an outer two-layer coating based on extruded polyethylene (AKH named after K.D. Pamfilov, Moscow, JSC Firm Gazkomplekt, Reutov, Moscow region).

TU 1394-002-47394390-99 Steel pipes with a diameter of 57 to 1220 mm coated with extruded polyethylene (AKH named after K.D. Pamfilov, Moscow, LLC "Indastle", "Klimentina SK", Moscow).

TU 1390-002-70403923-2004 Steel pipes with an outer two-layer coating based on extruded polyethylene (AKH named after K.D. Pamfilov, Moscow, NefteGazKomplekt LLC, Moscow).

TU 1394-016-03005951-2002 Electric-welded steel pipes with a diameter of 57 to 720 mm with an external anti-corrosion polyethylene coating.

TU 1394-001-05111644-96 Steel pipes with a two-layer coating of extruded polyethylene (AKH named after K.D. Pamfilov, JSC "Firm "Janus", Moscow, JSC "PTZ "Priz-NEGAS", Penza) .

TU 2313-008-17213088-2003 External anti-corrosion coating of connecting parts and shut-off valves for the construction of main oil pipelines (ZAO VNIIST-TSAPTR, OAO NEGASPENZAPROM, Penza).

TU 1394-009-17213088-2003 Steel pipes with a diameter of 57 to 1220 mm with an outer coating based on extruded polyethylene for the construction of main oil pipelines (ZAO VNIIST-TSAPTR, Moscow, ZAO PTZ Priz-NEGAS, Penza).

TU 1394-010-17213088-2003 Steel pipes with a diameter of 57 to 1220 mm with an outer coating based on extruded polypropylene for the construction of main oil pipelines (ZAO VNIIST-TSAPTR, Moscow, ZAO PTZ Priz-NEGAS, Penza ).

TU 1394-011-17213088-2003 Steel pipes with a diameter of 508 to 1420 mm with an external three-layer anti-corrosion polyethylene coating for main gas pipelines (VNIIGAZ LLC, PTZ Priz-NEGAS CJSC, Penza).

TU 1394-012-17213088-2003 Steel pipes with a diameter of 57 to 530 mm with an external anti-corrosion polyethylene coating for gas pipelines (VNIIGAZ LLC, Priz-NEGAS CJSC, Penza).

TU 5768-003-01297858-2002 Thermally hydro-insulated steel pipes for oil and gas pipelines (JSC "VNIIST", Moscow, JSC "NEGASPENZAPROM", Penza).

TU 1394-003-02066613-99 Steel pipes with an external polyethylene anti-corrosion coating (Indastle LLC, Moscow).

TU 4859-003-03984155-2000 Steel pipes with external protective bitumen coating(JSC "Insulation Plant", St. Petersburg).

TU 1390-015-03984155-98 Steel pipes with an external combined tape-polyethylene coating (ZAO Izolyatsionny Zavod, St. Petersburg).

TU 1390-021-43826012-2001 Steel pipes with internal and external anti-corrosion coating (Bugulma Mechanical Plant, Bugulma, Tatarstan).

TU 2312-005-27524984-99 Epovin enamel BEP-5297 (internal enamel coating, LLC "Indastle", Moscow).

TU 1390-001-48061320-99 Steel pipes with an external three-layer protective coating based on extruded polyethylene.

TU 1394-040-01297775-2002 Steel pipes, thermally insulated with polyurethane foam, for oil and gas pipelines (JSC SibNIPIgazstroy, Tyumen).

TU 5768-002-01297858-2002 Steel pipes, thermally insulated with polyurethane foam, for oil and gas pipelines (JSC "VNIIST", Moscow).

TU RB 03289805.002-98 Steel pipes with a diameter of 57530 mm with an outer coating based on extruded polyethylene.

TU RB 03289805.001-97 Steel pipes with a diameter of 57530 mm with an external combined tape-polyethylene coating.

TU U 14-8-34-2001 Electric-welded straight-seam steel pipes with a diameter of 530-1420 mm with an external polyethylene anti-corrosion coating (JSC "VNIIST", Moscow).

TU U 13457882.001-2001 Steel pipes coated on the basis of polyethylene with a polymer adhesive (NPP "Ukrtruboizol", Dnepropetrovsk).

TU 14-3-1954-94 Electric-welded straight-seam steel pipes with a diameter of 1220 and 1420 mm with an external polyethylene anti-corrosion coating (VNIIGAZ LLC, Khartsyzsk Pipe Plant OJSC, Donetsk region).

GOST 8944-75* Connecting parts made of malleable cast iron with cylindrical threads for pipelines. Technical requirements.

GOST 8946-75* GOST 8957-75*, GOST 8959-75*, GOST 8963-75* Ductile iron connecting parts with cylindrical threads for pipelines. Basic dimensions.

GOST 8965-75 Steel connecting parts with cylindrical threads for pipelines Р 1.6 MPa. Technical conditions.

GOST 8966-75, GOST 8968-75, GOST 8969-75 Straight couplings, locknuts and steel bends with cylindrical threads for pipelines Р 1.6 MPa (main dimensions).

GOST 17380-2001 Seamless welded pipeline parts made of carbon and low-alloy steel. General technical conditions.

GOST 17375-2001, GOST 17376-2001, GOST 17378-2001, GOST 17379-2001 Seamless welded pipeline parts made of carbon and low-alloy steel. Steeply curved bends 3D type (R1.5DN). Tees. Transitions. Eleptic plugs. Design.

GOST 24950-81 Bent bends and curved inserts for bends of steel linear parts main pipelines. Technical conditions.

State standards and technical specifications for other materials and technical products provided for by the project.

SNiP 3.01.01-85* Organization of construction production.

SNiP 42-01-2002 Gas distribution systems.

SP 42-101-2003 General provisions for the design and construction of gas distribution systems made of metal and polyethylene pipes.

SP 42-103-2003 Design and construction of gas pipelines from polyethylene pipes and reconstruction of worn-out gas pipelines.

SP 42-102 (project) Design and construction of gas pipelines from metal pipes.

PB 12-529-2003 Safety rules for gas distribution and gas consumption systems.

Instructions for warehousing and storage of pipes with an external factory polyethylene coating, JSC "VNIIST", Moscow, 2002.