Standard No.:	GB/T 12716-2011
English Name:	Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads
Chinese Name:	60°密封管螺纹
Chinese Classification:	J04    Basic standards and general methods
Professional Classification:	GB    National Standard
ICS Classification:	21.040.20 21.040.20    Inch screw threads 21.040.20
Issued by:	AQSIQ;SAC
Issued on:	2011-12-30
Implemented on:	2012-10-1
Status:	valid
Superseding:	GB/T 12716-2002 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on the threads
Language:	English
File Format:	PDF
Word Count:	9000 words
Price(USD):	110.0
Delivery:	via email in 1 business day

This standard specifies the thread profile, basic dimension, tolerance, marking and gage of the pipe thread (NPT and NPSC) whose thread angle is 60° and screw thread pair itself is sealable. This standard is applicable to the sealed thread connection of the pipe, valve, pipe joint, cock and other pipeline fittings.

Contents 1 Scope 2 Normative References 3 Terms and Symbols 4 Thread Profile 5 Thread Type and Coordination 6 Basic Dimension and Tolerance of the Taper Pipe Thread(NPT) 7 Basic Dimension and Tolerance of the Cylindrical Internal Thread (NPSC) 8 Effective Thread Length 9 Theory Location of the Chamfer and The Datum Plane 10 Marking 11 Thread Inspection Appendix A (Informative) Thread Working Gauge