BSP (British Standard Pipe) threads thiab NPT (National Pipe Thread) threads yog ob hom yeeb nkab xov qauv, nrog qee qhov sib txawv tseem ceeb:
- Regional thiab National Standards
BSP Threads: Cov no yog cov qauv British, tsim thiab tswj los ntawm British Standards Institution (BSI). Lawv muaj lub kaum sab xis ntawm 55 degrees thiab taper piv ntawm 1:16. BSP threads yog dav siv nyob rau hauv cov teb chaws Europe thiab Commonwealth lub teb chaws, feem ntau nyob rau hauv dej thiab roj industries.
NPT Xov: Cov no yog Asmeskas cov qauv, tsim thiab tswj los ntawm American National Standards Institute (ANSI) thiab American Society of Mechanical Engineers (ASME). NPT threads muaj lub kaum sab xis ntawm 60 degrees thiab tuaj nyob rau hauv ob qho tib si ncaj (cylindrical) thiab tapered daim ntawv. NPT threads paub txog lawv qhov kev sib khi zoo thiab feem ntau yog siv los thauj cov kua, gases, chav, thiab cov kua dej hydraulic.
- Txoj Kev Sealing
BSP Threads: Lawv feem ntau siv cov ntxhua khaub ncaws los yog sealant kom ua tiav sealing.
NPT Xov: Tsim los rau hlau-rau-hlau sealing, lawv feem ntau tsis tas yuav tsum tau 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:Asmeskas tus qauv nrog 60-degree xov lub kaum sab xis, feem ntau siv hauv North America thiab ANSI-raws li cheeb tsam.
BSP Xov Xwm:British tus qauv nrog 55-degree xov lub kaum sab xis, feem ntau siv hauv Tebchaws Europe thiab Tebchaws Meskas.
Post lub sij hawm: May-27-2024