Pipe thread design
Thread Content
For example, once the pipe diameter DN and pressure class PN are determined, BSPT threading is required for the connection. At this stage, thread design is involved, such as the pitch and so on. How are these determined? According to GB/T 7306, other parameters can be determined after the pitch is fixed; so how is the pitch determined? Another question is, what determines the thread length?
If the pitch and length of British standard tapered pipe threads are specified by standards, for ordinary metric threads it depends on the pressure of the pipeline being connected; there are also standards for the pitch, while it doesn’t matter if the length is a bit greater