Ipayipi lensimbi elishiselwe libhekisela epayipini lensimbi elinemithungo ngaphezulu elakhiwe ngokugobisa imicu yensimbi noma amapuleti ensimbi abe yindilinga, isikwele, nezinye izimo bese ewashisela. I-billet esetshenziselwa amapayipi ensimbi ashiselwe ipuleti lensimbi noma i-strip steel. Kusukela ngeminyaka yawo-1930, ngokuthuthuka okusheshayo kokukhiqizwa kwensimbi esezingeni eliphakeme eqhubekayo kanye nokuthuthuka kobuchwepheshe bokushisela nokuhlola, ikhwalithi yama-welds ibilokhu ithuthukiswa ngokuqhubekayo, izinhlobonhlobo kanye nokucaciswa kwamapayipi ensimbi ashiselwe kuye kwanda, futhi athathelwe indawo. amapayipi ensimbi angenamthungo emikhakheni eyandayo. Amapayipi ensimbi ashiselwe anezindleko eziphansi nokusebenza kahle kokukhiqiza okuphezulu kunamapayipi ensimbi angenamthungo.

Amapayipi ensimbi ahlukaniswe abe amapayipi angenamthungo futhi ashiselwe. Amapayipi ashiselwe ahlukaniswe abe amapayipi ensimbi othungelwano oluqondile kanye namapayipi ensimbi okuvunguza. Amapayipi ashiselwe ngomthungo oqondile ahlukaniswe abe ipayipi lensimbi le-ERW (i-high-frequency resistance welding) kanye nepayipi lensimbi le-LSAW (umthungo oqondile we-arc welding). Inqubo yokushisela amapayipi okuvunguza futhi umehluko phakathi kwe-arc welding engaphansi kwamanzi (ipayipi lensimbi ye-SSAW okwesikhashana) kanye nepayipi lensimbi ye-LSAW ngendlela yokushisela, futhi umehluko nge-ERW umehluko wenqubo yokushisela. I-arc welding engaphansi kwamanzi (ipayipi yensimbi ye-SAW) idinga ukungezwa kwe-medium (i-welding wire, i-flux), kodwa i-ERW ayidingi. I-ERW incibilikiswa ukushisisa kwe-medium-frequency. Amapayipi ensimbi angahlukaniswa abe izigaba ezimbili ngokwendlela yokukhiqiza: amapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe. Amapayipi ensimbi angenamthungo angahlukaniswa abe amapayipi ashisayo agingqiwe angenamthungo, amapayipi adonswa ngokubanda, amapayipi ensimbi anembayo, amapayipi anwetshiwe ashisayo, amapayipi asontekile abandayo, namapayipi akhishwe ngokwendlela yokukhiqiza. Amapayipi ensimbi angenamthungo enziwe ngensimbi yekhwalithi ephezulu ye-carbon steel noma i-alloy steel futhi ahlukaniswe abe yi-hot-rolled and cold-rolled (drawn).

Inqubo yokukhiqiza amapayipi ahlanganisiwe we-seam aqondile ilula, ngokusebenza kahle kokukhiqiza okuphezulu, izindleko eziphansi, kanye nentuthuko esheshayo. Amandla amapayipi ashiselwe okuvunguzayo ngokuvamile aphezulu kunalawo amapayipi ashiselwe ngomthungo oqondile. Amabhilidi amancane angasetshenziswa ukukhiqiza amapayipi ahlanganisiwe anama-diameter amakhulu, futhi amabhilidi anobubanzi obufanayo nawo angasetshenziswa ukukhiqiza amapayipi ahlanganisiwe anamadayimitha ahlukene. Kodwa-ke, uma kuqhathaniswa namapayipi e-seam aqondile ubude obufanayo, ubude be-weld bukhuphuka ngo-30 ~ 100%, futhi isivinini sokukhiqiza siphansi. Ngakho-ke, amapayipi ashiselwe anobubanzi obuncane ngokuvamile ashiselwa nge-seam welding eqondile, kuyilapho amapayipi amakhulu ashiselwe ashiselwe ngokuvamile ashiselwa nge-spiral welding.