ERWe phahameng-maqhubu a ho hanyetsa tjheseletsa seam seam welded phala;LSAWe ka tlas'a metsi arc tjheseletsa otlolohile seam welded phala;Ka bobeli ke tsa phala e otlolohileng ea seam welded, empa ts'ebetso ea welding e fapane.Kahoo u ke ke ua bua e 'ngoe ea tsona molemong oa phala e otlolohileng ea seam welded.Peipi ea tšepe e tloaelehileng haholoanyane ke SSAW– spiral welded pipe.High frequency straight seam (RW) ho latela ts'ebetso ea welding e arotsoe ka mefuta e 'meli e fapaneng ea ho tjheseletsa le ho hanyetsa, ho ipapisitse le molumo o chesang o pharalletseng joalo ka thepa e tala, ka mokhoa o tsoelang pele oa ho theha, ho kobeha, welding, kalafo ea mocheso, sizing, ho otlolla, mokhoa oa ho itšeha.Ha ho bapisoa le SSAW, ho nepahala ha maemo a phahameng, botenya ba marako a tšoanang, boleng bo botle ba holim'a metsi, khatello e phahameng ke melemo eohle.Empa bothata ke hore feela sehlahisoa se senyenyane sa bophara bo tšesaane phala ea lerako, sekoahelo se bonolo sa moloko, se sa fellang, se nang le bokooa ba foro.E sebelisoa haholo joalo ka khase ea toropo, lipalangoang tsa oli e tala.

Thepa ea phala ea tšepe ea LSAW ke poleiti e le 'ngoe e teteaneng ea tšepe, tšepe e ka har'a hlobo kapa mochini o bopang o nang le matla a mahareng (bolumo), o sebelisa tjheseletsa e nang le mahlakore a mabeli a qoelisoang ka metsing. ho lumellana hantle le ho kopana, ka bophara ba phala e kholo, botenya ba lerako, ho hanyetsa ka matla khatello e phahameng, ho hanyetsa mocheso o tlaase, joalo-joalo Ha ho hahoa matla a phahameng, boima bo phahameng, boleng bo phahameng ba phala e telele ea oli le khase, tube ea tšepe. boholo ba bophara bo boholo lerako le teteaneng le otlolohileng seam submerged arc.Ho ea ka lipehelo tsa maemo a API liphaepheng tse kholo tsa oli le khase, ha libaka tse phahameng, leoatle le toropo e nang le baahi ba bangata sehlopheng sa 1, 2, arc e otlolohileng ea metsi ke eona feela e khethiloeng bakeng sa mofuta oa tube.

Ho ea ka mekhoa ea ho etsa mefuta e fapaneng e ka aroloa ka: UOE/JCOE/HME.Volumes ea spiral submerged arc (SSAW) e ka tataiso e nang le mohala o bohareng oa phala e etsang Angle (e fetohang), e etsa le ho tjheseletsa, seam tjheseletsa ka spiral, molemo ke hore e ka hlahisa lintlha tse fapaneng tsa bophara ba phala ea tšepe. Tlhaloso e ts'oanang, mefuta e mengata ea lihlahisoa tse tala e kholoanyane, weld e ka qoba khatello ea kelello e ka sehloohong, boemo ba khatello ea kelello bo botle, bothata ke hore boholo bo bobe ba geometry, bolelele ba weld ha bo bapisoa le bolelele bo otlolohileng ba seam, ho bonolo ho hlahisa mapetsong, porosity, slag, liphoso tsa weld. joalo ka welding, welding stress ke tensile stress state.Melao le melaoana ea kakaretso ea moralo oa lipeipi tsa sebaka se selelele sa oli le khase Spiral submerged arc e ka sebelisoa feela bakeng sa lihlopha tse tharo, sebaka sa sehlopha.4 kantle ho naha ts'ebetso ena e tla ntlafatsoa lisebelisoa tse tala ho e-na le poleiti ea tšepe, ho etsa le ho tjheseletsa, ebe ho tjheseletsa le ho itšehla thajana, ho atoloha ha serame, ka mor'a ho tjheseletsa, boleng ba tjheseletsa bo haufi le UOE tube, lapeng ha ho na ts'ebetso e joalo, ke tataiso ea fektheri ea rona ho ntlafatsa."Khase ea Bophirimela-bochabela" e ntse e sebelisoa ke tlhahiso ea mesebetsi ea matsoho ea setso, feela ho atolosoa ha lesoba la liphaephe.United States, Japane le Jeremane, ka kakaretso, SSAW e mpe, ha e nahane hore ho loketse ho sebelisa kutu ea SSAW;Karolo ea Canada le Italy e sebelisa SSAW, Serussia, tšebeliso e nyane ea SSAW, 'me e entse boemo bo thata haholo bo tlatselletsang, ka lebaka la mabaka a nalane, kutu e mengata ea lapeng le eona ke ho sebelisa SSAW.