I-elbow fitting into esetshenziswa ukuxhuma amapayipi, ngokuvamile ehlanganisa indololwane nomzimba wepayipi.Ukufakwa kwendololwane kungasetshenziswa ukushintsha isiqondiso sepayipi, ukwandisa ubude bepayipi, ukuxhuma amapayipi amadayimitha ahlukene, njll. Ukucaciswa kwawo kuvame ukunqunywa ngamapharamitha afana nobubanzi bepayipi, i-engeli yendololwane, futhi ubukhulu bodonga.Izicaciso ezijwayelekile zokufakwa kwendololwane zihlanganisa indololwane engu-45-degree, 90-degree elbow, 180-degree elbow, njll. Lokhu kufakwa kwendololwane kuvamise ukusetshenziswa emikhakheni yezimboni, njengezinhlelo zamapayipi ku-petroleum, amakhemikhali, igesi yemvelo nezinye izimboni.Ngaphezu kwalokho, kukhona ukufakwa kwendololwane kokucaciswa okukhethekile, okufana nezindololwane zesokhethi, okokufakwa kwe-tee, njll., konke okunemisebenzi nokusetshenziswa okukhethekile.Izinto zokufakwa kwendololwane ngokuvamile zinqunywa ukucindezela, izinga lokushisa, okuphakathi nezinye izici ezidingwa uhlelo lwamapayipi.Izinto ezisetshenziswa kakhulu yi-carbon steel, insimbi engagqwali, i-alloy steel nokunye.Uma uhlelo lwamapayipi ludinga ukumelana nokugqwala okuqinile, insimbi engagqwali noma ezinye izinto ezimelana nokugqwala zizokhethwa.Ngamafuphi, ukucaciswa nokukhethwa kwempahla kokufakwa kwendololwane kufanele kucabangele ingcindezi, izinga lokushisa, okuphakathi nendawo, izidingo zokusebenza nezinye izici zesistimu yamapayipi, futhi wenze ukukhetha okuphusile ngokuya ngezidingo zangempela.