Iindololwane enezindonga eziwugqinsiilungu lepayipi elixhumayo lihlanganisa indololwane emise okwe-arc, ebonakala ngokuthi kukhona ukuhlukana phakathi koxhumano oluqondile endololwaneni egobile.Izindololwane zodonga eziwugqinsi zenziwe ngensimbi ekhonjiwe, insimbi engagqwali, insimbi yengxubevange, insimbi ekhanyiswayo, insimbi ye-carbon, izinsimbi ezingezona ayoni namapulasitiki.Ngokwenqubo yokukhiqiza, ingahlukaniswa: izindololwane zokushisela, izindololwane ezishayayo, izindololwane eziphonsa, njll. Indlela ama-elbows anezindonga eziwugqinsi axhunywe ngayo emapayipini: ukushisela okuqondile (okuvame ukusetshenziswa) ama-flange joints, amajoyinti anezintambo, kanye amalunga ohlobo lwesokhethi.

Isakhiwo sendololwane esinodonga oluqinile sinengqondo, uhlelo lwamapayipi lungacindezelwa ngokulinganayo, uhlelo lwamapayipi lungenziwa lula, ukusebenza kulula, ukutshalwa kwezimali kungasindiswa, ukumelana kwamapayipi kungancishiswa, ukulungiswa kwepayipi kungenziwa kahle, izindleko zokusebenza zingancishiswa, ukusatshalaliswa kokugeleza komoya kungalinganiswa, futhi ipayipi lingancishiswa.Ukudlidliza nokuqinisekisa ukusebenza okuphephile kwemishini namapayipi.Ngokwenqubo yokukhiqiza, ingahlukaniswa: izindololwane zokushisela, izindololwane zokubhoboza, izindololwane zokuphonsa, njll.