ʻO nā kaula BSP (British Standard Pipe) a me nā kaula NPT (National Pipe Thread) ʻelua mau kūlana kaula paipu maʻamau, me kekahi mau ʻokoʻa koʻikoʻi:
- Nā Kūlana ʻĀpana a me nā Kūlana ʻĀina
Nā Kaula BSP: He mau kūlana Pelekane kēia, i hoʻokumu ʻia a mālama ʻia e ka British Standards Institution (BSI). He 55 degere ko lākou kihi kaula a he 1:16 ka lakio taper. Hoʻohana nui ʻia nā kaula BSP ma ʻEulopa a me nā ʻāina Commonwealth, maʻamau i nā ʻoihana wai a me ke kinoea.
Nā Kaula NPT: ʻO kēia nā kūlana ʻAmelika, i hana ʻia a mālama ʻia e ka American National Standards Institute (ANSI) a me ka American Society of Mechanical Engineers (ASME). He 60 degere ke kihi o ke kaula o nā kaula NPT a loaʻa i nā ʻano pololei (cylindrical) a me nā ʻano tapered. Ua ʻike ʻia nā kaula NPT no kā lākou hana sila maikaʻi a hoʻohana pinepine ʻia e lawe i nā wai, nā kinoea, ka mahu, a me nā wai hydraulic.
- ʻAno Sila
Nā kaula BSP: Hoʻohana pinepine lākou i nā mea holoi a i ʻole nā mea sila e hoʻokō ai i ka sila ʻana.
Nā kaula NPT: Hoʻolālā ʻia no ka sila ʻana i ka metala-a-metala, ʻaʻole pinepine lākou e koi i ka sila hou.
- Nā Wahi Hoʻohana
Nā Kaula BSP: Hoʻohana pinepine ʻia ma UK, Australia, Aotearoa, a me nā wahi ʻē aʻe.
Nā Kaula NPT: ʻOi aku ka maʻamau ma ʻAmelika Hui Pū ʻIa a me nā mākeke pili.
Nā Kaula NPT:ʻO ke kūlana ʻAmelika me kahi kihi kaula 60-degere, i hoʻohana pinepine ʻia ma ʻAmelika ʻĀkau a me nā wahi i kūlike me ANSI.
Nā Kaula BSP:Kūlana Pelekane me ke kihi kaula he 55-degere, hoʻohana pinepine ʻia ma ʻEulopa a me nā ʻāina Commonwealth.
Ka manawa hoʻouna: Mei-27-2024