1. Okokuqala, bheka i-engeli yentambo
Indlela enembile kakhulu ukulinganisa nge-thread gauge. U-60° ungowendinganiso yaseMelika, kanti u-55° ungowendinganiso yaseBrithani.
Uma kungekho mathuluzi atholakalayo, ngemicu yepayipi, ungabona indlela yokuvala: Imicu ye-NPT ejwayelekile yaseMelika ivame ukuvala ngentambo uqobo; Imicu ye-BSP ejwayelekile yaseBrithani (njenge-BSPT, i-BSPP) ine-engeli yentambo engu-55°, futhi imicu ye-BSPP efanayo idinga ukuthembela endandatho yokuvala ukuze ivale.
2. Amapharamitha okuhlola okhiye (ubukhulu kanye ne-TPI)
Kuma-fasteners afana nama-bolts namakinati anezixhumanisi ezinezintambo, ngemva kokulinganisa ububanzi obukhulu (ububanzi bangaphandle bentambo yangaphandle / ububanzi bangaphakathi bentambo yangaphakathi), into ebaluleke kakhulu ukubala inani lezintambo nge-intshi (TPI), bese uhlola ngokuqhathanisa nencwadi yemiyalelo ejwayelekile.
Ngezintambo zamapayipi, ngaphezu kokulinganisa ubukhulu, udinga futhi ukunquma ukuthi ngabe intambo enciphile (njenge-NPT, i-BSPT) noma intambo eqondile (njenge-BSPP), kanye nendlela yokuvala.
3. Hlola ikhodi ejwayelekile ngqo
Uma kukhona uphawu olujwayelekile engxenyeni (njenge-UNC, i-UNF, i-BSW, i-BSF, i-NPT, i-BSPP, njll.), lesi yisisekelo esithembeke kakhulu.
Landelela emuva emthonjeni
Intambo ejwayelekile yaseBrithani yavela entanjeni kaJoseph Whitworth engama-degree angu-55 eWhitworth ngo-1841;
Intambo ejwayelekile yaseMelika yaphakanyiswa nguWilliam Sellers ngo-1864 njengentambo engama-degree angu-60.
Eqinisweni, ngesikhathi seMpi Yezwe II, izindinganiso zaseBrithani nezaseMelika zabangela ubunzima obukhulu ekushintshisaneni kwemishini phakathi kwamabutho ase-Allied. Ngakho-ke, ngo-1948, i-United States, i-United Kingdom, ne-Canada zakha ndawonye indinganiso yentambo ehlanganisiwe (UNC/UNF).
Ngokuthakazelisayo, kusukela ngo-1961, izinhlangano zamazwe ngamazwe ezifanele zamukela incazelo yentambo ejwayelekile yaseBrithani, i-ISO R 228. Ngakho-ke manje, intambo yaseBrithani iyindinganiso eqinile esetshenziswa emhlabeni wonke.
Isikhathi sokuthunyelwe: Feb-05-2026
