The pipe thread is a thread that is connected to the pipe wall, with 55 degrees of non - sealed pipe thread and a 55 degree sealing pipe thread. The utility model is mainly used for the connection of the pipe, and the inner and outer threads are closely matched with two kinds of straight pipes and a conical pipe.

Main classification

Common pipe threads mainly include the following: NPT, PT, G, etc..

1). NPT is the abbreviation of National (American) Thread, belonging to the United States standard 60 degree of spinal canal thread, used in North America, the national standard access to the "GB/T 12716-2011 60 degree sealing pipe thread".

2). PT (BSPT) Pipe is the abbreviation of Thread, is a 55 degree taper pipe thread sealing, belonging to the Whitworth family, for Europe and the Commonwealth, commonly used in water and gas pipe industry, taper 1:16, GB 7306.1-2000 GB/T "refer to 55 DEG pipe thread seal part first: cylindrical inner thread and taper external threads" and "GB/T 7306.2-2000 55 ~ second parts: sealing pipe thread thread and taper external thread". The name for the ZG.

3). G is a 55 degree non threaded sealing pipe thread, belongs to the Wyeth thread family. Marked as G on behalf of cylindrical thread. GB access to the "GB/T 7307-2001 55 degree of non sealing pipe thread".