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ASTM A106 Pipe Procurement Guide: How to Specify Grade, Dimensions, Testing and Documentation

Prepare a technically complete ASTM A106 seamless pipe order by defining service conditions, grade, dimensions, heat treatment, testing, MTC content and inspection points. This guide helps buyers compare quotations and prevent post-order specification gaps.
LSAW Pipe Documentation Package: What We Check Before Release

A complete LSAW pipe documentation package must connect each delivered pipe to its plate, heat, inspection and test records. This guide covers MPS, ITP, WPS/PQR, MTC, NDT, hydrotest, dimensional reports and final release checks.
LSAW Pipe-End Geometry for Girth-Weld Fit-Up: Ovality, Hi-Lo and End Matching

Pipe-end ovality, wall distribution, bevel condition and transport deformation can directly affect girth-weld fit-up. This guide explains end measurement, hi-lo control, end matching and pipe-end protection for LSAW projects.
LSAW Pipe Nonconformance: How We Contain, Repair and Close the Record

This guide explains how LSAW pipe nonconformances should be identified, contained, evaluated, repaired and reinspected. It also shows what buyers should verify in NCR dispositions, concession requests and final closeout records.
Can This LSAW Pipe Size Be Manufactured? A Practical OD × WT × Grade Review

This guide explains how OD, wall thickness, grade, plate availability, forming capacity, welding qualification and testing affect LSAW pipe manufacturing feasibility. It helps buyers identify technical and commercial constraints before quotation.

Russian GOST Steel Pipe Standards and Grades

Date: 2026-06-03

Introduction

Russia and many CIS markets still use GOST standards in steel pipe procurement, especially for water and gas pipes, electric welded pipes, seamless pipes, structural pipes and oil and gas pipeline pipes. For exporters, the difficulty is that Russian enquiries often mention only the GOST number, while the actual product requirement may also depend on diameter range, pipe class, steel grade, heat treatment, test category and certification. A buyer may ask for “GOST pipe”, but GOST 3262, GOST 10704, GOST 10705, GOST 8732 and GOST 20295 refer to different pipe types. If the supplier quotes only by outside diameter and wall thickness, the offer may miss important requirements such as steel grade, mechanical properties, hydrostatic testing, weld quality, delivery condition and marking.

Common Russian GOST Steel Pipe Standards

GOST Standard	Product Type	Common Application	Buyer’s Key Checkpoint
GOST 3262-75	Welded steel pipes for water and gas supply	Water lines, gas lines, heating systems, general service	Confirm galvanized or black pipe, light/ordinary/reinforced series, threaded or plain ends
GOST 10704-91	Electric welded straight-seam steel pipes, size range standard	General welded pipe dimensions	Usually used together with technical requirements such as GOST 10705
GOST 10705-80	Electric welded steel pipes, technical requirements	Pipelines, structures and general-purpose welded pipe	Confirm steel grade, diameter, test category and delivery condition
GOST 10706-76	Large-diameter electric welded straight-seam pipes	Larger welded pipes and pipeline use	Confirm weld treatment, NDT and hydrostatic testing
GOST 8731-74	Seamless hot-deformed steel pipes, technical requirements	General-purpose seamless pipe	Defines technical requirements, grades and mechanical properties
GOST 8732-78	Seamless hot-deformed steel pipes, size range	Seamless pipe dimensions and mass	Often used together with GOST 8731
GOST 8733 / 8734	Cold-deformed seamless steel pipes	Precision, mechanical and industrial pipe	Used when tighter size control or cold-deformed pipe is required
GOST 20295-85	Welded steel pipes for oil and gas pipelines	Main gas, oil and product pipelines	Confirm strength class, pipe process, diameter, wall thickness and pipeline project requirement
GOST 8639 / 8645	Square and rectangular steel pipes	Structural and fabrication use	Check dimensions, wall thickness, steel grade and tolerance

GOST 3262-75: Water and Gas Steel Pipe

GOST 3262-75 is one of the most common Russian standards for welded steel pipes used in water supply, gas supply and heating systems. It can cover black or galvanized pipe, threaded or non-threaded pipe, and different wall thickness series. This standard is often requested for ordinary building services rather than high-pressure industrial pipelines. Buyers should avoid confusing it with oil and gas transmission pipe.

Item	Common Requirement
Product	Welded water and gas steel pipe
Surface	Black or galvanized
End finish	Plain end, threaded end, coupling
Pipe series	Light, ordinary or reinforced
Common use	Water, gas, heating, general service
Key documents	MTC, galvanizing report if required, packing list

Typical enquiry format: GOST 3262-75 black welded steel pipe, DN50, ordinary series, 6 m length, plain ends, MTC required.

GOST 10704 and GOST 10705: Electric Welded Steel Pipe

GOST 10704 mainly defines the size range for electric welded steel pipes. GOST 10705 gives technical requirements for electric welded pipes made from carbon and low-alloy steels. In practice, enquiries may mention both standards together. These pipes are used for pipelines, structures and general-purpose products. However, the buyer must confirm whether the pipe is only for general fabrication or for fluid transportation, because testing requirements may be different.

Standard	Main Function	Buying Note
GOST 10704	Dimensions and assortment of electric welded steel pipe	Check OD, wall thickness, length and tolerance
GOST 10705	Technical conditions for electric welded steel pipe	Check steel grade, mechanical properties and testing
GOST 10706	Large-diameter welded pipe technical requirement	Often relevant for larger welded pipe and pipeline work

Common steel grades may include St1, St2, St3, steel 10, steel 20 and low-alloy grades depending on the project. Do not assume one grade only from the GOST number. The grade should be stated separately in the purchase order.

GOST 8731 and GOST 8732: Seamless Hot-Deformed Steel Pipe

For seamless hot-deformed steel pipes, GOST 8732 is commonly used for size range, while GOST 8731 covers technical requirements. These pipes are used in general mechanical, industrial and pipeline applications where seamless pipe is required.

Standard	Function	Buyer Should Confirm
GOST 8732-78	Size range for hot-deformed seamless pipes	Outside diameter, wall thickness, length and mass
GOST 8731-74	Technical requirements for hot-deformed seamless pipes	Steel grade, mechanical properties, test method and delivery condition

Common grades include carbon steel grades such as 10, 20, 35 and 45, and alloy or low-alloy grades depending on application. Grade 20 is frequently used for general-purpose seamless steel pipe, but it should not be selected automatically for every project.

GOST 20295-85: Welded Pipe for Oil and Gas Pipelines

GOST 20295-85 is used for welded straight-seam and spiral-seam steel pipes for gas and oil pipelines. This standard is more project-sensitive than ordinary welded pipe standards because pipeline design may involve strength class, operating pressure, temperature, medium, welding quality, hydrostatic test and NDT.

Item	What to Confirm
Pipe type	Straight-seam or spiral-seam welded pipe
Diameter and wall thickness	Must match pipeline design
Strength class	K34, K38, K42, K48, K50, K52, K55, K60 or project-specified class
Testing	Hydrostatic test, weld inspection, NDT
Coating	Bare, 3PE, FBE, epoxy, internal coating if required
Documents	MTC, inspection report, coating report, certificate of origin

For oil and gas pipeline projects, buyers should not replace GOST 20295 pipe with ordinary welded pipe unless the project engineer approves the substitution.

Russian Steel Grades: How to Read Common Names

Russian Grade	General Meaning	Common Use
St3	Ordinary carbon structural steel	Welded pipe, structures, general fabrication
10	Low-carbon quality steel	Seamless pipe, mechanical and general applications
20	Quality carbon steel	Common seamless pipe and industrial use
35 / 45	Higher carbon steel	Mechanical applications, higher strength parts
09G2S	Low-alloy structural steel	Low-temperature or structural applications
K34–K60	Pipeline strength classes	Oil and gas pipeline pipe under GOST 20295

These comparisons are for general purchasing reference only. International equivalence must be confirmed by chemical composition, mechanical properties, impact testing and project specification.

GOST vs ASTM / API / EN: Can They Be Replaced?

GOST Requirement	Possible International Reference	Important Warning
GOST 3262 water and gas pipe	ASTM A53, EN 10255, GB/T 3091	Confirm wall series, threading, galvanizing and testing
GOST 10704 / 10705 welded pipe	ASTM A53, EN 10217, GB/T 3091	Confirm technical requirements and test category
GOST 8731 / 8732 seamless pipe	ASTM A106, ASTM A53 seamless, EN 10216	Confirm grade, temperature and pressure use
GOST 20295 pipeline pipe	API 5L	Confirm pipeline strength class, PSL level, NDT and coating

How to Prepare a Clear GOST Pipe Enquiry

Required Information	Example
Standard	GOST 3262-75, GOST 10704-91, GOST 10705-80, GOST 8732-78, GOST 20295-85
Steel grade	St3, 10, 20, 09G2S, K52, K60
Pipe process	ERW, LSAW, SSAW, seamless hot-deformed, cold-deformed
Size	DN, OD, wall thickness
Length	Random length, fixed length, 6 m, 12 m
Surface	Black, galvanized, painted, coated
Ends	Plain, beveled, threaded, coupling
Testing	Hydrostatic, tensile, flattening, bend test, NDT
Documents	MTC, GOST certificate, inspection report, COO, packing list
Destination	Russia, Kazakhstan, Uzbekistan, Belarus or other CIS market

Practical Buying Advice

For water, gas and heating systems, start with GOST 3262 and confirm whether black or galvanized pipe is needed. For ordinary electric welded pipe, check whether GOST 10704, GOST 10705 or both are required. For seamless pipe, GOST 8732 should be paired with GOST 8731 to avoid missing technical requirements. For oil and gas pipelines, GOST 20295 should be treated as a project pipeline standard, not as a general welded pipe standard. The safest approach is to quote exactly according to the buyer’s project specification. If the buyer only provides “GOST pipe”, ask for the end use, steel grade, size, wall thickness, surface treatment, test requirement and certificate requirement before confirming price.

References & Sources

1.Electronic Fund of Legal and Normative-Technical Documents —GOST 8732-78 — Seamless Hot-Deformed Steel Pipes: Dimensions. Provides a reference text for dimensional requirements commonly associated with hot-finished seamless pipe. Verify the current status and approved edition for the destination market.

2.Eurasian Economic Commission —Technical Regulation. Official EAEU overview of technical regulation, conformity assessment and the common regulatory framework.

3.EAEU Technical Regulation Portal —Technical Regulations of the Eurasian Economic Union. Official portal for checking applicable technical regulations and their current status.

4.International Energy Agency —TR EAEU 49/2020: Requirements for Transmission Pipelines for Liquid and Gaseous Hydrocarbons. Summarizes the scope and regulatory context of EAEU requirements for hydrocarbon transmission pipelines.

5.Metinvest —09G2S Steel: Properties and Applications. Steelmaker technical reference for the commonly specified 09G2S low-alloy grade, including typical properties and uses.

6.Russian Metallurgy (Metally) —Effect of High Temperatures on the Mechanical Properties of 09G2S Steel. Peer-reviewed research on the temperature-dependent mechanical behaviour of 09G2S steel.

Applicability note: GOST and EAEU requirements are not interchangeable with ASTM, API or EN designations by name alone. Confirm the current standard edition, product scope, dimensions, steel grade, delivery condition, testing, certification and destination-market conformity requirements in the purchase specification.

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Tags : Russian steel pipe standards , GOST steel pipe , GOST 3262 steel pipe , GOST 10704 steel pipe , GOST 10705 steel pipe , GOST 8732 seamless pipe , GOST 20295 pipeline pipe , Russian pipe grades

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