As the abbreviation of the "National (American)Pipe Thread", "NPT" belongs to the American standard 60degree taper pipe thread, which is widely used in the North America regions. It has a threaded angle of 60 degree and a taper of 1:16. "NPT" thread could be divided into general sealing cylindrical pipe thread (NPSC) and general sealing tapered pipe thread (NPT). And there are two kinds of matching methods: "cone/cone" matching; "column/cone" matching.
" PT" is the abbreviation of the " Pipe Thread", which belongs to the Whitworth pipe thread. It has a threaded angle of 55 degree and a taper of 1:16, and widely used in the European/England/Middle East/some regions of South America. " BSP" Threaded could be divided into BSPP (British Standard Pipe Parallel) and BSPT (British Standard Pipe Taper). It is only the difference of threaded shape.
Comparison of NPT/BSPP/BSPT threads:
- Shape: NPT and BSPT threads are tapered threads; BSPP threads are parallel threads.
- Threaded angle: NPT thread angle is 60degree; BSPP and BSPT thread angles are 55degree.
- Sealing method: NPT and PT achieve sealing through the taper of the thread; BSPP threads achieve sealing through external seals (such as gaskets).
- "EN" Threaded is the abbreviation of the "European Standard Threaded". It is a thread standard jointly formulated by the standardization organizations of various European countries. European standard threads mainly use three types of threaded, namely V-shaped threaded, U-shaped threaded and R-shaped threaded, which are commonly used in high-load and high-demand occasions. European standard threads are usually used in the European market, international trade and high-demand fields, such as automobiles, aircraft, high-speed railways, etc.
Application area:
NPT is mainly used in North America; BSPT is mainly used in the UK and the UK Commonwealth countries.
BSPP threads are widely used in various international applications, especially in water pipes and hydraulic systems.
PanNext Pipe Fittings’ Standard:
Based on the International Standard & Committed to the Higher Level.
Post time: 1 月-14-2025
