Iingqiniba engqindililiilungu lombhobho odibanisayo liquka ingqiniba emile okwe-arc, ebonakala ngokuba kukho uqhagamshelo oluthe ngqo kwingqiniba egobileyo.Iingqiniba eludongeni ezishinyeneyo zenziwe ngentsimbi etyhidiweyo, intsimbi engatyiwa, intsimbi exutywe nentsimbi, intsimbi ekhatywayo, intsimbi yekhabhoni, isinyithi esingeyontsimbi kunye neeplastiki.Ngokwenkqubo yemveliso, inokwahlulwa ibe: ukuwelda ingqiniba, ingqiniba ngenqindi, ukuphosa ingqiniba, njl. Indlela ingqiniba ezishinyeneyo ziqhagamshelwe kwimibhobho yile: ukuwelda ngqo (okuqhelekileyo kusetyenziswa) i-flange joints, i-threaded joints, kunye ne-threaded elbows. amalungu ohlobo lwesokethi.

Ulwakhiwo lwengqiniba olungqingqwa lunengqiqo, inkqubo yombhobho inokugxininiswa ngokulinganayo, inkqubo yombhobho ingenziwa lula, ukusebenza kulula, utyalo-mali lunokugcinwa, ukuxhathisa kombhobho kunokunciphisa, ukulungiswa kombhobho kunokulungiswa, iindleko zokusebenza zingancitshiswa, ukuhanjiswa komoya kunokulinganisela, kwaye umbhobho unokunciphisa.Ukungcangcazela kunye nokuqinisekisa ukusebenza ngokukhuselekileyo kwezixhobo kunye nemibhobho.Ngokwenkqubo yemveliso, inokwahlulwa ibe: i-welding elbows, i-punching elbows, i-elbows yokuphosa, njl.