GOST 31447-2012 PDF

Full title and description

GOST 31447-2012 — Steel welded pipes for trunk gas pipelines, oil pipelines and oil product pipelines. Technical specifications. The standard defines technical requirements for longitudinally welded and spiral-welded steel pipes intended for construction and repair of main pipelines transporting non-corrosive-active products (natural gas, crude oil and petroleum products).

Abstract

This interstate (GOST) standard specifies the range, mechanical and chemical requirements, geometric tolerances, testing and acceptance rules for welded steel pipes used in trunk gas, oil and oil-product pipelines. It raises requirements for geometry, steel chemistry, mechanical properties and nondestructive testing, and aligns with international norms such as API Spec 5L and EN 10208-2.

General information

• Status: Interstate standard (GOST); introduced as a national standard of the Russian Federation (implemented by Rosstandart).
• Publication date: Accepted 15 March 2012; date of national introduction: 1 January 2015.
• Publisher: Interstate Council for Standardization, Metrology and Certification (EASC); implemented for Russia by the Federal Agency for Technical Regulation and Metrology (Rosstandart).
• ICS / categories: 77.140.75 (pipes and fittings for oil and gas pipelines).
• Edition / version: GOST 31447-2012 (first introduced 2012; amended text published in IUS No. 12, 2015).
• Number of pages: 30 pages (PDF official text).

Scope

The standard applies to welded and spiral-welded steel pipes with nominal diameters from 114 mm up to 1420 mm for trunk gas pipelines, oil pipelines and oil product pipelines transporting non-corrosive-active media under working pressures up to 9.8 MPa (100 kgf/cm²) and ambient temperatures down to −60 °C. It covers dimensional and geometric parameters, chemical composition and mechanical properties of steels, nondestructive testing requirements, acceptance rules and marking/packing.

Key topics and requirements

• Applicable pipe types: longitudinally welded and spiral-welded steel pipes for mainline pipelines.
• Diameter range: 114–1420 mm.
• Design/working conditions: rated for working pressure up to 9.8 MPa and temperatures down to −60 °C.
• Material requirements: specified chemical composition and mechanical properties for approved steel grades.
• Geometrical tolerances: tighter controls on diameter, wall thickness, ovality and other dimensional parameters compared with earlier national documents.
• Quality control and testing: mandatory acceptance tests, hydraulic tests, and expanded nondestructive testing (UT, radiographic, magnetic particle, etc.).
• Marking, packing and certification: requirements for manufacturer quality certificates and product marking for traceability.

Typical use and users

Primary users are pipeline designers and engineers, pipe manufacturers, pipeline construction contractors, asset owners/operators in oil & gas, procurement and quality assurance teams, and testing laboratories performing acceptance and nondestructive inspections. The standard is referenced in pipeline design, procurement specifications and factory production control for mainline pipe supply.

Related standards

This GOST was prepared with reference to and in alignment with earlier national documents (for example GOST R 52079-2003) and international specifications such as API Spec 5L, EN 10208-2 and various GOST/ISO test-method standards cited in the normative references section of the standard.

Keywords

welded steel pipe; spiral-welded pipe; trunk pipeline; oil pipeline; gas pipeline; mainline pipe; diameter 114-1420 mm; 9.8 MPa; −60 °C; nondestructive testing; steel grades; GOST 31447-2012.

FAQ

Q: What is this standard?

A: GOST 31447-2012 is an interstate technical specification for steel welded pipes used in trunk gas, oil and oil-product pipelines, setting material, dimensional, mechanical and testing requirements.

Q: What does it cover?

A: It covers longitudinally welded and spiral-welded pipes (114–1420 mm), allowable working pressures (up to 9.8 MPa), low-temperature performance (down to −60 °C), chemical and mechanical properties, geometric tolerances, testing and acceptance procedures, and marking/packing rules.

Q: Who typically uses it?

A: Pipe manufacturers, pipeline designers and constructors, oil & gas operators, quality/inspection labs, and procurement/specification teams for mainline pipeline projects.

Q: Is it current or superseded?

A: The document is GOST 31447-2012 (introduced in 2012 by the interstate council and brought into force nationally in Russia from 1 January 2015). Users should verify whether later revisions or national amendments have been issued after 2015 before placing orders or performing acceptance testing.

Q: Is it part of a series?

A: It is part of the family of pipeline and pipe-product standards and references many GOST/ISO test-method standards; it was developed from and replaces earlier national specifications for welded trunk pipeline pipes (for example GOST R 52079-2003) and is intended to align with international pipeline pipe specifications.

Q: What are the key keywords?

A: welded steel pipes, spiral-welded, trunk pipeline, oil pipeline, gas pipeline, nondestructive testing, steel grades, dimensional tolerances, GOST.