Why are some studs in pipe flange standards required to have a specific pitch?

2018-12-10View Original

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Why are some studs in pipe flange standards required to have a specific pitch?

Reply #22018-12-10

The standards specify that connection bolts larger than M36 use fine pitch threads, hence there is a specification for the pitch.

Reply #32018-12-10

It depends only on the specifications of the stud (diameter); for fine-threaded threads, the pitch must be indicated.

Reply #42018-12-10

I hadn’t come into much contact with it before; thanks for the correction

Reply #52018-12-11

HG/T20592~20635-2009

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