Ipayipi elishiselwe elinobubanzi obuncane libizwa nangokuthi ipayipi lensimbi elishiselwe ngobubanzi obuncane, okuyipayipi lensimbi elenziwe ngokushisela ipuleti lensimbi noma insimbi yomugqa ngemva kokucwiliswa.Inqubo yokukhiqiza ipayipi elincane elishiselwe ububanzi ilula, ukusebenza kahle kokukhiqiza kuphezulu, kunezinhlobonhlobo eziningi kanye nokucaciswa, futhi izindleko zemishini zincane, kodwa amandla ajwayelekile aphansi kunalawo epayipi lensimbi engenamthungo.Kusukela ngawo-1930, ngokuthuthuka okusheshayo kokukhiqizwa okuqhubekayo kwensimbi ye-strip ephezulu kanye nokuthuthukiswa kobuchwepheshe bokushisela nokuhlola, ikhwalithi yama-welds iye yathuthukiswa ngokuqhubekayo, futhi izinhlobonhlobo kanye nokucaciswa kwamapayipi amancane ashiselwe kuye kwanda futhi. ishintshwe emikhakheni eyengeziwe futhi ipayipi lensimbi engenamthungo.Ashiselwe steel pipe ihlukaniswe iqonde umthungo ipayipi ashiselwe kanye Kuvunguza ashiselwe ipayipi ngokusho uhlobo weld.

Izikhala ezisetshenziselwa amapayipi ashiselwe anobubanzi obuncane amapuleti ensimbi noma amapheshana, ahlukaniswa abe amapayipi ashiselwe esithandweni somlilo, amapayipi ashiselwe ngogesi (amelana ne-welded), kanye namapayipi a-arc-welded okuzenzakalelayo ngenxa yezinqubo zabo zokushisela.Kunezinhlobo ezimbili zamapayipi ashiselwe: ipayipi elihlanganisiwe le-seam kanye nepayipi elihlanganisiwe elivunguzayo.Ngenxa yokuma kwayo ekugcineni, ihlukaniswe yaba amapayipi ashiselwe ayindilinga kanye namapayipi ashiselwe akhethekile (isikwele, flat, njll.) ashiselwe.

Inqubo yokukhiqiza ipayipi elincane elihlanganisiwe lilula, ukusebenza kahle kokukhiqiza okuphezulu, izindleko eziphansi kanye nentuthuko esheshayo.Amandla amapayipi ashiselwe okuvunguzayo ngokuvamile aphezulu kunalawo amapayipi ashiselwe ngomthungo oqondile.Amapayipi ahlanganisiwe anama-diameter amakhulu angakhiqizwa kusuka kumabhilidi amancane.Amapayipi ahlanganisiwe anama-diameter ahlukene angabuye akhiqizwe ngamabhilidi obubanzi obufanayo.Kodwa-ke, uma kuqhathaniswa nepayipi lomthungo oqondile wobude obufanayo, ubude be-weld seam bukhuphuka ngo-30 kuya ku-100%, futhi isivinini sokukhiqiza siphansi.Ngakho-ke, amapayipi ashiselwe anobubanzi obuncane ngokuvamile ashiselwe ngomthungo oqondile, futhi amapayipi ashiselwe anobubanzi obukhulu ngokuvamile ashiselwe ngokuzungeza.