GOST R 51906-2015 PDF

Full title and description

GOST R 51906-2015 — Thread connections for casing, tubing, line pipe and thread gauges for them. General technical requirements. (Russian: ГОСТ Р 51906-2015. Соединения резьбовые обсадных, насосно-компрессорных труб, труб для трубопроводов и резьбовые калибры для них. Общие технические требования).

Abstract

This national standard sets geometric profile parameters, dimensional tolerances, inspection and gauging requirements for threaded connections used on casing, tubing and line pipe in the oil and gas industry. It provides general technical requirements for thread forms, manufacture, acceptance checks and the thread gauges used to verify conformity, harmonizing earlier national practice with relevant international/API guidance.

General information

• Status: Cancelled / withdrawn; removed from effect in Russia (end of validity recorded 01 August 2018).
• Publication date: Introduced 01 November 2015 (approved March 3, 2015).
• Publisher: Approved and put into effect by the Federal Agency for Technical Regulation and Metrology (Rosstandart).
• ICS / categories: Related classification codes include OKS 75.180.99 and OKP 132100, 132700 (petroleum / pipe industry classifications).
• Edition / version: 2015 edition (designated GOST R 51906-2015).
• Number of pages: 58 pages (standard text length).

Scope

The standard applies to threaded connections of casing, tubing, sucker-rod and line pipes used in drilling, completion and pipeline applications within the oil and gas industry. It establishes nominal thread profile geometry, dimensional tolerances, acceptance criteria for threaded joints and requirements for go/no‑go and calibration gauges used to control thread manufacture and inspection.

Key topics and requirements

• Definition of nominal thread profiles and key geometric parameters (lead, flank angles, crest/root form).
• Dimensional tolerances and permissible deviations for external and internal threads of casing, tubing and line pipe.
• Requirements for manufacture, thread cutting and finishing practices to achieve specified profiles.
• Specification of thread gauges (go and no‑go) and inspection procedures for verifying thread conformity.
• Acceptance criteria for threaded joints, assembly checks and recommendations for thread compound/finish where relevant to sealing performance.
• Reference and harmonization to related API/ISO practices used in casing and tubing thread standards.

Typical use and users

This standard was used by pipe manufacturers, thread cutters, oilfield tubular suppliers, inspection laboratories, well-construction contractors and quality/standards engineers involved in drilling, completion and pipeline work. It supported procurement specifications, manufacturing quality control and dimensional inspection of threaded tubular products.

Related standards

GOST R 51906-2015 replaced GOST R 51906-2002 and was developed with reference to international/API practice for casing and tubing threads (for example API and earlier ISO guidance). On the territory of the Russian Federation later related national documents such as GOST 34057-2017 are indicated as relevant successors/related normative documents.

Keywords

thread connections, casing, tubing, line pipe, thread gauges, go/no‑go gauges, oilfield tubulars, thread profile, dimensional tolerances, thread inspection, GOST R 51906

FAQ

Q: What is this standard?

A: GOST R 51906-2015 is a Russian national standard that specified general technical requirements for threaded connections used on casing, tubing and line pipe and for the thread gauges used to inspect them.

Q: What does it cover?

A: It covers nominal thread profile geometry, dimensional tolerances, manufacturing and inspection requirements, acceptance criteria for joints and the specification and use of go/no‑go and calibration gauges for these threaded tubular connections.

Q: Who typically uses it?

A: Pipe and thread manufacturers, oilfield tubular suppliers, quality and inspection teams, test laboratories and engineering/standards personnel in the oil and gas sector.

Q: Is it current or superseded?

A: The standard was introduced on 01 November 2015 and later recorded as cancelled (end of validity 01 August 2018) in national registries; users in Russia are directed to follow the subsequently referenced national documents where indicated.

Q: Is it part of a series?

A: It continues the national series of tubular-thread standards (it replaced GOST R 51906-2002) and is related to other GOST/API/ISO documents governing tubular thread cutting, gauging and inspection practices.

Q: What are the key keywords?

A: Threaded connections, casing, tubing, line pipe, thread gauges, go/no‑go, dimensional tolerances, thread profile, oil and gas tubulars.