Pipe threads: British PS, PT, PF; American NPS, NPT, NPTF, NPSM Inch threads: Specifications are established based on nominal size and number of threads per inch For example, 1/4 "-20 represents a nominal size of 1/4, which means a major diameter of 6.35mm (25.4 divided by 4=6.35)...
公制螺纹与英制螺纹的区别是什么(WhatisthedifferencebetweenmetricthreadandBritishthread)Metric,inchthreadandAmericanStandardNPT,PT,Gare.NPTpipethreadisNational(American)PipeThreadistheabbreviationofAmericanStandard60degreetaperpipethread,usedinNorthAmerica.NationalstandardcanrefertoGB/T12716-1991PTisTheabbreviationofPipe...
BSPT (British Standard Pipe Thread) is similar to NPT except for one important difference. The angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees instead of 60 degrees as it is for NPT. Thus...