Ulusi wa BSP (British Standard Pipe) ndi ulusi wa NPT (National Pipe Thread) ndi miyezo iwiri yofanana ya ulusi wa mapaipi, yokhala ndi kusiyana kwakukulu:
- Miyezo ya Chigawo ndi Dziko
Mizere ya BSP: Iyi ndi miyezo yaku Britain, yopangidwa ndikuyang'aniridwa ndi British Standards Institution (BSI). Ili ndi ngodya ya ulusi wa madigiri 55 ndi chiŵerengero cha taper cha 1:16. Mizere ya BSP imagwiritsidwa ntchito kwambiri ku Europe ndi mayiko a Commonwealth, makamaka m'mafakitale amadzi ndi gasi.
Ulusi wa NPT: Izi ndi miyezo ya ku America, yopangidwa ndi kuyang'aniridwa ndi American National Standards Institute (ANSI) ndi American Society of Mechanical Engineers (ASME). Ulusi wa NPT uli ndi ngodya ya ulusi wa madigiri 60 ndipo umabwera molunjika (cylindrical) komanso mopingasa. Ulusi wa NPT umadziwika chifukwa cha kugwira ntchito bwino kotseka ndipo nthawi zambiri umagwiritsidwa ntchito kunyamula zakumwa, mpweya, nthunzi, ndi madzi amadzimadzi.
- Njira Yotsekera
Ulusi wa BSP: Nthawi zambiri amagwiritsa ntchito makina ochapira kapena otsekereza kuti atseke.
Ulusi wa NPT: Wopangidwa kuti utsekedwe kuchokera ku chitsulo kupita ku chitsulo, nthawi zambiri sufuna chosindikizira china.
- Madera Ogwiritsira Ntchito
Mizere ya BSP: Imagwiritsidwa ntchito kwambiri ku UK, Australia, New Zealand, ndi madera ena.
Mizere ya NPT: Yofala kwambiri ku United States ndi misika ina yofanana nayo.
Ulusi wa NPT:Muyezo waku America wokhala ndi ngodya ya ulusi wa madigiri 60, womwe umagwiritsidwa ntchito kwambiri ku North America ndi madera omwe amatsatira malamulo a ANSI.
Mitu ya BSP:Muyezo waku Britain wokhala ndi ngodya ya ulusi wa madigiri 55, womwe nthawi zambiri umagwiritsidwa ntchito ku Europe ndi mayiko a Commonwealth.
Nthawi yotumizira: Meyi-27-2024