IZINHLOBO NOKUFAKA IZIZWALO ZAMADIgri angu-90
Kunezinhlobo ezimbili eziyinhloko zendololwane ye-90 degree - i-long radius (LR) ne-short radius (SR). Izindololwane ezinobubanzi obude zinerediyasi ephakathi nendawo enkulu kunobubanzi bepayipi, okuwenza angasheshi uma ushintsha indlela. Zisetshenziswa kakhulu ekucindezelweni okuphansi kanye nezinhlelo zejubane eliphansi. Amandololwane erediyasi emfushane anobubanzi obulingana nobubanzi bepayipi, okuwenza avele ngokushesha lapho kushintshwa isiqondiso. Zisetshenziswa ku-high pressure kanye nezinhlelo zejubane eliphezulu. Ukukhetha uhlobo olulungile lwendololwane ye-90 degree kuya ngezidingo zohlelo lokusebenza.

UKUFAKA I-ELBOW 90 DEGREE
Ukufaka indololwane engu-90 degree kuyinqubo elula edinga amathuluzi ayisisekelo okufaka amapayipi. Isinyathelo sokuqala siwukuqinisekisa ukuthi iziphetho zamapayipi zihlanzekile futhi azinakho ukugqwala, imfucumfucu noma ama-burrs. Okulandelayo, indololwane ingase idinge ukucutshungulwa, ithengiswe noma ifakwe emapayipini, kuye ngokuthi hlobo luni lokuhlangana. Kubalulekile ukuqondisa umugqa omaphakathi wendololwane naleyo yamapayipi ukuze ugweme noma yikuphi ukuphazamiseka noma ama-kinks ohlelweni. Okokugcina, amajoyinti endololwane kufanele ahlolelwe ukuvuza ngaphambi kokuba uhlelo luqashwe.