GB/T 7306.2-2000: Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads. Part 2: Taper internal and external threads

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Scope

This standard specifies the thread profile, dimensions, tolerances, markings of tapered
internal and external threads with a thread angle of 55° where pressure-tight joints are
made on the threads.
This standard applies to threaded connections of pipes, valves, fittings, plugs and other
piping accessories.
Suitable sealing media are permitted within the threaded connections, such as applying
tape or sealant to the thread surface.

Basic Data

Standard ID	GB/T 7306.2-2000 (GB/T7306.2-2000)
Description (Translated English)	Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads. Part 2: Taper internal and external threads
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J04
Classification of International Standard	21.040.30
Word Count Estimation	7,791
Date of Issue	2000-07-24
Date of Implementation	2000-12-01
Older Standard (superseded by this standard)	GB/T 7306-1987
Quoted Standard	GB/T 14791-1993
Adopted Standard	ISO 7-1-1994; MOD
Issuing agency(ies)	State Quality and Technical Supervision
Summary	This standard specifies: tooth type angle of 55��, thread sealing vice itself the tapered thread and taper external thread tooth type, dimensions, tolerances and markings. This standard applies to: pipes, valves, fittings, cocks and other piping accessories threaded coupling. Allows the addition of a suitable threaded vice sealing medium, such as tape wrapped around the threaded surface coated sealant.