Ipayipi le-ERW kanye nepayipi le-LSAW womabili amapayipi ashiselwe ngomthungo oqondile, asetshenziselwa kakhulu ukuthutha uketshezi, ikakhulukazi amapayipi ahamba amabanga amade kawoyela negesi. Umehluko omkhulu phakathi kwalokhu kokubili yinqubo yokushisela. Izinqubo ezahlukene zenza ipayipi libe nezici ezihlukene futhi lifanele izimo ezihlukene zohlelo lokusebenza.

Ishubhu le-ERW lisebenzisa ukushisela ukumelana nemvamisa ephezulu futhi lisebenzisa amakhoyili ensimbi e-broadband agqinqiwe njengezinto zokusetshenziswa. Njengelinye lamapayipi asetshenziswa kakhulu namuhla, ngenxa yokusetshenziswa kwamapheshana/amakhoyili ensimbi aneyunifomu kanye nobukhulu obunembile njengezinto zokusetshenziswa, inezinzuzo zokunemba kobukhulu obuphezulu, ukujiya kwezindonga ezifanayo, kanye nekhwalithi enhle yendawo. Ipayipi linobuhle bomthungo we-weld omfishane kanye nomfutho ophezulu, kodwa le nqubo ingakhiqiza kuphela amapayipi anezindonga ezincane ezinobubanzi obumaphakathi (ngokuya ngosayizi womucu wensimbi noma ipuleti lensimbi elisetshenziswa njengempahla eluhlaza). Umthungo we-weld uthambekele ekubeni namachashaza ampunga, awaxutshiwe, ama-grooves Ama-Corrosion defects. Izindawo ezisetshenziswa kakhulu njengamanje igesi yasemadolobheni kanye nokuthuthwa kwemikhiqizo kawoyela ongahluziwe.

Ipayipi le-LSAW lamukela inqubo yokushisela i-arc engaphansi kwamanzi, esebenzisa ipuleti elilodwa eliwugqinsi oluwugqinsi njengempahla eluhlaza, futhi lenze ukushisela kwangaphakathi nangaphandle endaweni yokushisela futhi andise ububanzi. Ngenxa yohlu olubanzi lwemikhiqizo eqediwe esebenzisa amapuleti ensimbi njengezinto zokusetshenziswa, ama-welds anokuqina okuhle, ipulasitiki, ukufana nokuhlangana, futhi anezinzuzo zobubanzi bepayipi elikhulu, ukushuba kodonga lwamapayipi, ukumelana nengcindezi ephezulu, ukumelana nokushisa okuphansi kanye nokumelana nokugqwala. . Lapho kwakhiwa amapayipi anamandla aphezulu, aqine kakhulu, ekhwalithi ephezulu kawoyela negesi amabanga amade, iningi lamapayipi ensimbi adingekayo amapayipi ashiselwe i-arc enobubanzi obukhulu anomugqa oqondile-omthungo oqondile. Ngokwezinga le-API, emapayipini amakhulu kawoyela negesi, lapho udlula ezindaweni ze-Class 1 ne-Class 2 njengezindawo ezisezintabeni, izindawo ezingaphansi kolwandle, kanye nezindawo zasemadolobheni eziminyene, amapayipi ashiselwe i-arc anethungo eliqondile awukuphela kohlobo lwepayipi olumisiwe.