BSP (British Standard Pipe) threads thiab NPT (National Pipe Thread) threads yog ob qho qauv yeeb nkab sib xws, nrog qee qhov sib txawv tseem ceeb:
- Cov Qauv Hauv Cheeb Tsam thiab Lub Tebchaws
Cov Xov BSP: Cov no yog cov qauv Askiv, tsim thiab tswj hwm los ntawm British Standards Institution (BSI). Lawv muaj lub kaum sab xis ntawm 55 degrees thiab qhov sib piv ntawm 1:16. Cov xov BSP siv dav hauv Tebchaws Europe thiab Commonwealth, feem ntau hauv kev lag luam dej thiab roj.
Cov Xov NPT: Cov no yog cov qauv Asmeskas, tsim thiab tswj hwm los ntawm American National Standards Institute (ANSI) thiab American Society of Mechanical Engineers (ASME). Cov xov NPT muaj lub kaum sab xis ntawm 60 degrees thiab tuaj yeem ua ob qho tib si ncaj (cylindrical) thiab tapered. Cov xov NPT paub txog lawv qhov kev ua tau zoo sealing thiab feem ntau siv los thauj cov kua, roj, pa, thiab cov kua hydraulic.
- Txoj Kev Kaw
BSP Threads: Lawv feem ntau siv cov washers lossis sealant kom ua tiav kev sib khi.
NPT Xov: Tsim los rau kev sib khi hlau-rau-hlau, lawv feem ntau tsis xav tau cov sealant ntxiv.
- Cov Cheeb Tsam Thov
BSP Threads: Feem ntau siv hauv UK, Australia, New Zealand, thiab lwm thaj chaw.
NPT Threads: Ntau dua nyob rau hauv Tebchaws Meskas thiab lwm yam kev lag luam.
NPT Xov:Tus qauv Asmeskas nrog lub kaum sab xis 60-degree, feem ntau siv hauv North America thiab ANSI-raws li thaj chaw.
BSP Xov:Tus qauv Askiv nrog lub kaum sab xis 55-degree, feem ntau siv hauv Tebchaws Europe thiab Commonwealth lub tebchaws.
Lub sijhawm tshaj tawm: Tsib Hlis-27-2024