Peipi e cheselitsoeng ka bophara bo bonyenyane e boetse e bitsoa peipi ea tšepe e nang le bophara bo bonyenyane, e leng phala ea tšepe e entsoeng ka ho tjheseletsa poleiti ea tšepe kapa tšepe e hlobolisa ka mor'a hore e khirisoe. Ts'ebetso ea tlhahiso ea phala e nyenyane e cheselitsoeng ka bophara e bonolo, katleho ea tlhahiso e phahame, ho na le mefuta e mengata le litlhaloso, 'me theko ea thepa e nyenyane, empa matla a kakaretso a tlaase ho feta a phala ea tšepe e se nang moeli. Ho tloha lilemong tsa bo-1930, ka nts'etsopele e potlakileng ea tlhahiso e tsoelang pele ea tšepe ea boleng bo holimo le ntlafatso ea theknoloji ea ho tjheseletsa le tlhahlobo, boleng ba li-welds bo 'nile ba ntlafatsoa ka mokhoa o tsoelang pele,' me mefuta e fapaneng le litlhaloso tsa liphaephe tse cheselitsoeng ka bophara bo nyane li ntse li eketseha. nkeloa sebaka ka masimong le ho feta seamless tšepe phala. Welded tšepe phala e arotsoe ka otlolohile seam welded phala le spiral welded phala ho ea ka mofuta oa tjheseletsa.

Likheo tse sebelisoang bakeng sa liphaephe tse cheselitsoeng ka bophara bo bonyenyane ke lipoleiti tsa tšepe kapa likhoele, tse arotsoeng ka liphaephe tse cheselitsoeng ka sebōpi, liphaephe tse nang le motlakase (ho hanyetsa-welded) le liphaephe tse itšebetsang ka li-arc ka lebaka la mekhoa ea tsona e fapaneng ea ho cheselletsa. Ho na le mefuta e 'meli ea liphaephe tse cheselitsoeng: phala e otlolohileng ea seam e entsoeng ka phala le phala e entsoeng ka spiral. Ka lebaka la sebopeho sa eona sa ho qetela, e arotsoe ka liphaephe tse cheselitsoeng ka chitja le liphaephe tse nang le sebōpeho se khethehileng (sekwere, sephara, joalo-joalo).

Ts'ebetso ea tlhahiso ea phala e nyenyane ea welded e bonolo, e phahameng ea tlhahiso, theko e tlaase le tsoelo-pele e potlakileng. Matla a lipeipi tse cheselitsoeng ka spiral hangata a phahame ho feta a liphaephe tse otlolohileng tsa seam. Liphaephe tse cheselitsoeng tse nang le li-diameter tse kholoanyane li ka hlahisoa ho tloha li-billet tse fokolang. Liphaephe tse cheselitsoeng tse nang le li-diameter tse fapaneng li ka boela tsa hlahisoa ka li-billet tsa bophara bo lekanang. Leha ho le joalo, ha ho bapisoa le phala e otlolohileng ea seam ea bolelele bo lekanang, bolelele ba seam ea weld bo eketsoa ka 30 ho isa ho 100%, mme lebelo la tlhahiso le tlase. Ka hona, liphaephe tse cheselitsoeng ka bophara bo bonyenyane li na le seam se otlolohileng, 'me liphaephe tse cheselitsoeng ka bophara bo boholo li entsoe ka spiral.