GOST 10654-81 PDF

Full title and description

ГОСТ 10654-81 — Калибры для треугольной резьбы насосно-компрессорных труб и муфт к ним. Типы. Основные размеры и допуски (Gauges for triangular thread for tubing pipes with couplings — Types; basic dimensions and tolerances). Стандарт устанавливает типы, профиль, основные размеры и предельные отклонения резьбовых и гладких калибров для контроля треугольной резьбы НКТ и муфт.

Abstract

Standard GOST 10654-81 defines the types of gauges (working and control; thread and smooth; full and incomplete profiles), the thread profile for triangular (tubing) threads, dimensional parameters and tolerances, wear limits, and mandatory rules for application (contained in the required annex). It is intended for gauges used to check the threads of tubing pipes and couplings produced to GOST 633-80.

General information

• Status: Adopted 1981; introduced (effective) 1 July 1982; widely cited and used for manufacture and control of NKT gauges.
• Publication date: Approved 31 March 1981; date of introduction (введение) 01 July 1982.
• Publisher: Государственный комитет СССР по стандартам; Издательство стандартов (Standards Publishing House).
• ICS / categories: Group G28 / classification entry DK 621.753.3: 006.354 (document group for gauges and related measuring tools).
• Edition / version: ГОСТ 10654-81 (original 1981 edition; designation suffix "-81" denotes year of approval).
• Number of pages: 7 pages (standard text / official publication sizes as recorded in document catalogues).

Scope

Applies to gauges (probes and rings, both working and control types) used to inspect triangular (thread profile for tubing) threads of tubing pipes and their couplings manufactured to GOST 633-80. The standard sets required profile geometry, step (pitch) tolerances, angular tolerances of the flank, conicity limits along the thread length, permissible wear limits for gauges and rules for their application.

Key topics and requirements

• Classification of gauge types: R (thread working — plugs and rings), K-R (thread control — plugs and rings), G (smooth working — plugs and rings), K-G (smooth control — plugs), G-N (smooth incomplete plugs).
• Thread profile definition for triangular/NKT threads and required geometry (flank angle, pitch, mean diameter).
• Dimensional tolerances for working and control gauges (limits for mean diameter, pitch deviation, flank angle, conicity along the threaded length).
• Wear and serviceability limits (maximum permitted wear expressed as changes in interference/tightness and specified numerical limits).
• Mandatory annex with rules of application: how to apply plugs and rings, acceptance criteria, and relationships between control gauges, working gauges and product threads.
• Normative references and technical conditions: references to GOST 633-80 (tubing pipes and couplings) and to related gauge technical conditions (e.g., GOST 24672-81 for tapered-thread gauge technical requirements).

Typical use and users

Primary users include manufacturers of tubing and couplings, gauge and tool makers, quality control/OTK departments at pipe plants, metrology laboratories, drilling and oilfield equipment service companies, and suppliers of inspection gauges for the oil & gas sector. The standard is used when producing, verifying and calibrating plug (probe) and ring gauges for NKT threads.

Related standards

Key related documents: GOST 633-80 (tubing pipes and couplings — technical conditions), GOST 24672-81 (gauges for tapered threads — technical conditions), predecessor ГОСТ 10654-63 (replaced by 10654-81). Additional related GOSTs cover gauges for other thread types (e.g., GOST 10655, GOST 25575 series) and national technical specifications for calibration and verification.

Keywords

калибры; калибр-пробка; калибр-кольцо; треугольная резьба; насосно-компрессорные трубы (НКТ); муфты; профиль резьбы; допуски; конусность; ГНК; РНК; контрольные калибры; ГОСТ 10654-81.

FAQ

Q: What is this standard?

A: ГОСТ 10654-81 is a Soviet / national standard that specifies types, basic dimensions and tolerances for gauges used to inspect triangular threads of tubing pipes and their couplings (NKT). It was approved in 1981 and introduced on 1 July 1982.

Q: What does it cover?

A: It covers classification of gauges (thread and smooth; working and control; full and incomplete profiles), the profile and dimensional parameters of the triangular (tubing) thread, permissible deviations (pitch, flank angle, mean diameter, conicity), wear limits for gauges, and rules of application (in mandatory annex).

Q: Who typically uses it?

A: Gauge manufacturers, pipe and coupling producers, quality control and metrology laboratories, oilfield service companies and any organisation that makes or inspects NKT threaded connections. Commercial suppliers and repair shops also reference it when producing or certifying gauges.

Q: Is it current or superseded?

A: The document is widely referenced and available in standards catalogues and commercial document services; it replaced an earlier 1963 version (ГОСТ 10654-63). Users should consult the national standards registry or their national standards body for official current status or any amendments applicable in their country or industry. Databases consulted for this summary list the 1981 text as the normative document.

Q: Is it part of a series?

A: Yes — it is part of the family of standards covering gauges and thread control for oil-and-gas tubulars (references include GOST 633-80 for tubing and couplings, GOST 24672-81 for tapered-thread gauge technical requirements, and other GOSTs for different thread types). It directly replaces ГОСТ 10654-63.

Q: What are the key keywords?

A: Gauges; plug gauge; ring gauge; triangular thread; tubing (NKT); coupling; tolerances; pitch; flank angle; conicity; wear limits.