(1)Izindololwane zokushisela izinqezingahlukaniswa zibe izindololwane zokushisela ezinqenqemeni ezinde kanye nezindololwane zokushisela ze-radius butt ngokuya nge-radius yazo yokugoba. Iradiyasi yokugoba yendololwane yokushisela engaba isinqe ende ilingana nezikhathi ezingu-1.5 zobubanzi obungaphandle bepayipi, okungukuthi, R=1.5D. Iradiyasi yokugoba yendololwane yokushisela ye-radius butt emfushane ilingana nobubanzi obungaphandle bepayipi, okungukuthi, R=1D. Efomini, u-D uwububanzi bendololwane ye-butt welding, futhi u-R uyiradiyasi yokugoba. Uma ingekho incazelo ekhethekile, indololwane ye-1.5D ngokuvamile isetshenziswa.
(2) Ngokwezinga lokucindezela, cishe kunezinhlobo eziyishumi nesikhombisa, ezifanayo nezindinganiso zamapayipi aseMelika, okuhlanganisa: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; I-Sch80 , i-Sch100, i-Sch120, i-Sch140, i-Sch160, i-XXS, okuvame ukusetshenziswa kuyo i-STD ne-XS.
(3) Ngokwe-engeli yendololwane, kunezindololwane ezishisela izinqe eziyi-45 degree, izindololwane ezishisela izinqe eziyi-90 degree, izindololwane ezishisela izinqe eziyi-180-degree nezinye izindololwane ezinama-engeli ahlukene.
(4) Izinto ezisetshenziswayo yilezi: i-carbon steel, i-alloy steel nensimbi engagqwali.
Isikhathi sokuthumela: Jul-24-2022