ERW ke high-frequency resistance welding-straight seam welded pipe; LSAW e ka tlas'a metsi arc tjheseletsa-o otlolohileng seam welded phala; ka bobeli ke ba liphaephe tse otlolohileng tsa seam, empa ts'ebetso le ts'ebeliso ea tse peli li fapane, ka hona li ke ke tsa emela liphaephe tse otlolohileng tsa seam welded feela. SSAW-spiral welding-spiral welded pipes li atile haholo.

Phapang le tšebeliso ea lipeipi tsa tšepe tsa ERW, LSAW le SSAW

Otlolohile seam high frequency (ERW steel pipe) e arotsoe ka ho tjheseletsa induction le ho ikopanya le welding ho latela mekhoa e fapaneng ea tjheseletsa. E sebelisa li-coil tse pharalletseng tse chesitsoeng joalo ka lisebelisoa tse tala. Ka mor'a ho kobeha, ho tsoela pele ho theha, ho tjheseletsa, ho phekola mocheso, ho khomarela, ho otloloha, ho itšeha, ho na le melemo ea li-welds tse khutšoanyane, ho nepahala ho phahameng, ho lekana ha lerako, boleng bo botle ba holim'a metsi le khatello e phahameng ha e bapisoa le spiral. Leha ho le joalo, bothata ke hore liphaephe tse nang le marako a tšesaane feela tse nang le li-diameter tse nyenyane le tse mahareng li ka hlahisoa. Fusion, bofokoli bo kang ba corrosion. Libaka tse sebelisoang haholo hajoale ke khase ea tlhaho ea litoropong le lipalangoang tsa lihlahisoa tsa oli e tala.

Otlolohileng seam submerged arc tjheseletsa (LSAW tšepe phala) e hlahisoa ka ho sebelisa sehare se le seng le poleiti e teteaneng e le thepa e tala, ho hatella (ho phutha) poleiti ea tšepe ka har'a hlobo kapa mochine oa ho etsa, o nang le mahlakore a mabeli a nang le mahlakore a mabeli a koahetsoeng ke metsi, le ho atolosa bophara. Sehlahisoa se phethiloeng se na le mefuta e mengata ea litlhaloso, ho tiea ha weld hantle, polasetiki, ho tšoana le ho teteana, 'me se na le melemo ea bophara ba pipe e kholo, lerako le teteaneng la pipe, ho hanyetsa khatello e phahameng, ho hanyetsa mocheso o phahameng le ho hanyetsa kutu. Ha ho etsoa liphaephe tse matla, tse thata haholo, tsa boleng bo holimo tsa oli le khase, liphaephe tsa tšepe tse hlokahalang ke boholo ba liphaephe tse kholo tsa bophara bo botenya bo botenya bo otlolohileng. Ho latela maemo a API, liphaepheng tse kholo tsa oli le khase, ha li feta libakeng tsa Sehlopha sa 1 le sa Sehlopha sa 2 (joalo ka libaka tse lithaba, mabopo a leoatle le libaka tsa litoropo tse nang le baahi ba bangata), arc e kentsoeng ka metsing ke eona feela mofuta o khethiloeng oa lipeipi. Ho latela mekhoa e fapaneng ea ho etsa, e ka aroloa ka: U0E/JCOE/HME.

Spiral submerged arc welding (SSAW phala ea tšepe) e bolela hore ha u tsamaisa phala, tataiso ea eona e ka pele e ka lehlakoreng (e ka fetohang) ho ea bohareng ba phala ea ho etsa phala, 'me welding e etsoa nakong ea ho theha,' me weld ea eona e etsa mohala oa spiral. Molemo ke hore litlhaloso tse tšoanang li ka hlahisa liphaephe tsa tšepe tsa bophara bo fapaneng, lisebelisoa tse tala li na le mefuta e mengata ea ho ikamahanya le maemo, li-weld li ka qoba khatello e kholo, 'me khatello ea kelello e ntle. Bothata ke hore boholo ba geometri bo bobe. Bolelele ba weld bo bolelele ho feta ba seam se otlolohileng. Mapetsong, li-pores, li-slag inclusions le ho kheloha ha welding ho atisa ho etsahala. Bakeng sa bofokoli ba welding, khatello ea welding e maemong a khatello ea maikutlo.

Litlhaloso tsa moralo oa lipeipi tse akaretsang tsa oli le khase tsa sebaka se selelele li bolela hore spiral submerped arc e ka sebelisoa feela libakeng tsa Sehlopha sa 3 le sa 4. Ka mor'a ho ntlafatsa ts'ebetso linaheng tse ling, lisebelisoa tse tala li nkeloa sebaka ke lipoleiti tsa tšepe ho arola ho etsa le ho tjheseletsa. Kamora ho tjheseletsa pele le ho nepahala, bophara ba tjheseletsa bo tla atoloha kamora ho tjheseletsa ho batang. Boleng ba welding bo haufi le pipe ea UOE.
Hona joale, ha ho na mokhoa o joalo Chaena. Ena ke tataiso ea ntlafatso ea feme ea rona. Pipe ea "West-East Gas Transmission" e ntse e hlahisoa ho ea ka mokhoa oa setso, empa bophara ba moeli oa lipeipi bo atolositsoe.
United States, Japane le Jeremane ka kakaretso li hana ho sebelisa SSAW mme li lumela hore mohala o ka sehloohong ha oa lokela ho sebelisa SSAW.
Canada le Italy li sebelisa SSAW hanyenyane, 'me Russia e sebelisa SSAW ka bongata bo fokolang. Ba thehile maemo a tlatsetso a thata haholo. Ka lebaka la mabaka a nalane, mela e mengata ea kutu ea lapeng e ntse e sebelisa SSAW. Thepa e tala e fetoloa poleiti ea tšepe ho arola sebopeho le welding. Kamora ho tjheseletsa pele le ho nepahala, bophara ba tjheseletsa bo tla atoloswa kamora ho tjheseletsa ho batang. Boleng ba welding bo haufi le pipe ea UOE.
ERW e otlolohileng seam welded pipe hangata e sebelisoa joalo ka terata ea terata indastering ea matla. Litšobotsi tsa ts'ebetso: 100% tlhahlobo ea ultrasonic ea thepa ea motsoali e tiisa boleng ba hare-hare ba 'mele oa pipe; ha ho na mokhoa oa ho kuta ka mokhoa o sa phutholohang, 'me thepa ea motsoali e na le likoti tse fokolang le mengoapo; pipe e phethiloeng ka mor'a ho felisoa ha khatello ea kelello ha e le hantle ha e na khatello e setseng; weld e khuts'oane mme monyetla oa liphoso o nyane; e ka tsamaisa khase ea tlhaho e bolila e mongobo; ka mor'a ho atolosa bophara, ho nepahala ha boholo ba geometri ea pipe ea tšepe e phahame; tjheseletsa e etsoa ka mokhoa o otlolohileng sebakeng se otlolohileng ka mor'a hore ho etsoa ho phethoe, kahoo ho se lumellane, ho buleha ha seam, le sedikadikwe sa bophara ba pipe li laoloa hantle, 'me boleng ba ho cheselletsa bo botle haholo. Litekanyetso tse sebetsang tsa sehlahisoa: API 5L, API 5CT, ASTM, EN10219-2, GB/T9711, 14291-2006 le litekanyetso tse ling tsa morao-rao. Lihlahisoa tsa tšepe tsa lihlahisoa li kenyelletsa: GRB, X42, X52, X60, X65, X70, J55, K55, N80, L80, P110, joalo-joalo Lihlahisoa li sebelisoa haholo ka oli, khase ea tlhaho, khase ea mashala, merafo ea mashala, mechine, motlakase, ho bokella le merero e meng. Lisebelisoa tsa theknoloji ea ts'ebetso e tsoetseng pele: joalo ka W-FF molding, welding e tiileng ea maqhubu a holimo-limo, ho lemoha liphoso tsa ultrasonic, ho lemoha phoso ea magnetic flux leakage, le lisebelisoa tsa ho hlahloba tse phahameng: tse kang metallographic analysis, Vickers hardness tester, mochine oa ho hlahloba liphello, spectrum analyzer, mochine oa tlhahlobo ea bokahohle le lisebelisoa tse ling. Lihlahisoa li romeloa Amerika Boroa, Amerika Leboea, European Union, Asia Boroa-bochabela le libakeng tse ling. Ho theosa le lilemo, li 'nile tsa amoheloa hantle ke bareki lefatšeng ka bophara.

Khampani ea rona e fana kaEN10210S235JRH, S275JOH, S275J2H, S355JOH,S355J2H, S355K2H, e nang le litlhaloso ho tloha bophara ba ka ntle 219-1216, botenya ba lebota 6-40, le tiisetso ea pele ea feme. Bareki lefatšeng ka bophara ba amohelehile ho reka.