What does the G code related to threads mean in CAD?
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What does the G code related to threads mean in CAD? Like G1, G3/4 and so on. :dizzy:
Common pipe threads mainly include the following types: NPT, PT, G, etc. 1) NPT is the abbreviation for National (American) Pipe Thread; it refers to the 60-degree tapered pipe thread standard used in North America. For the national standard, refer to GB/T12716-1991. 2) PT (BSPT) is an abbreviation for Pipe Thread; it refers to a sealing tapered pipe thread with a 55-degree angle, and it belongs to the Whitworth thread family. It is widely used in Europe and the Commonwealth countries**, especially in the water and gas piping industries. The taper ratio is 1:16; for national standards, refer to GB/T7306-2000. It is called ZG in China. 3) G is a 55-degree unthreaded sealing pipe thread, belonging to the Whitworth thread family. Marked as G represents cylindrical threads. Refer to GB/T7307-2001 for national standards. 3/4 should be the diameter of the thread size
The 2nd floor is very detailed, while the 4th floor is quite concise, hehe
This post was last edited by sundeili on 2010-7-30 at 10:04. G stands for threaded pipe; the number following G indicates the diameter of the thread. G1 refers to a threaded pipe with a diameter of one inch, that is, a pipe with a DN25 diameter
This post was last edited by sundeili on 2010-7-30 at 10:05. The details regarding pipe threads are explained in detail in the post on page 2
Reply to 7# sundeili: Well, do you know how to check the national standards? :handshake
Knowing standards is basic knowledge for a designer. You haven’t graduated yet, have you? You can find everything by searching on Baidu
Reply to 9# sundeili :L I just graduated over a month ago... Thanks!