What type of stubs are generally used at both ends of externally threaded valves, and what are the standards?
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As the title suggests: What type of stubs are generally used at both ends of externally threaded valves, and what are the standards? :handshake
As far as I know, seamless straight short pipes are generally used for this purpose; however, it’s important to check whether the wall thickness remaining after machining, minus the thread depth, meets the requirements； Or choose forged pipes ； The standards include ASME B1.20.1, among others; it also depends on the material used. I’m not sure if that’s correct?