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The knowledge of the threading dies

The knowledge of the threading dies
Issue Time:2016-06-07

Material :

1.Alloy dies:

2.HSS dies: (High-Speed Steel) 

Thread type:

BSPT: British Standard Pipe Taper 

BSPP: British Standard Pipe Parallel 

NPT: National Pipe Taper  

NPSM: National Pipe Straight Mechanical

ISO: International Standards Organization ,Metric threads.


BSPT,widely use in Asian,Middle East,Europ,Africa.

NPT,widely use America country


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