ERW yog cov yeeb nkab uas muaj qhov siab thiab tsis yooj yim vuam-cov yeeb nkab uas ncaj thiab sib txuas; LSAW yog cov yeeb nkab uas nyob hauv qab dej arc vuam-cov yeeb nkab uas ncaj thiab sib txuas; ob qho tib si koom nrog cov yeeb nkab uas ncaj thiab sib txuas, tab sis cov txheej txheem vuam thiab kev siv ntawm ob qho no txawv, yog li lawv tsis tuaj yeem sawv cev rau cov yeeb nkab uas ncaj thiab sib txuas ib leeg xwb. SSAW-kauv vuam-cov yeeb nkab uas sib txuas muaj ntau dua.

Qhov sib txawv thiab kev siv cov kav hlau ERW, LSAW thiab SSAW

Cov yeeb nkab hlau ncaj ncaj (ERW) muab faib ua cov yeeb nkab induction vuam thiab cov yeeb nkab sib cuag raws li ntau txoj kev vuam. Nws siv cov kauj vuam dav dav kub ua cov khoom siv raw. Tom qab ua ntej khoov, ua tiav tas mus li, vuam, kho cua sov, nplaum, ncaj, txiav, nws muaj qhov zoo ntawm cov vuam luv luv, qhov tseeb ntawm qhov ntev, phab ntsa tuab sib npaug, qhov zoo ntawm qhov chaw thiab siab siab piv rau cov kauv. Txawm li cas los xij, qhov tsis zoo yog tias tsuas yog cov yeeb nkab nyias nyias nrog cov kab me me thiab nruab nrab tuaj yeem tsim tau. Kev sib xyaw, qhov tsis zoo ntawm xeb zoo li qhov. Cov chaw siv dav dav tam sim no yog cov roj av hauv nroog thiab cov khoom siv roj av nyoos.

Kev vuam hlau ncaj nraim (LSAW steel pipe) yog tsim los ntawm kev siv ib lub phaj nruab nrab thiab tuab ua cov khoom siv raw, nias (dov) lub phaj hlau hauv lub pwm lossis lub tshuab tsim, vuam ob sab submerged arc, thiab nthuav dav txoj kab uas hla. Cov khoom tiav lawm muaj ntau yam kev qhia tshwj xeeb, kev vuam zoo, plasticity, uniformity thiab density, thiab muaj qhov zoo ntawm txoj kab uas hla loj ntawm cov yeeb nkab, phab ntsa tuab ntawm cov yeeb nkab, kev tiv taus siab, kev tiv taus kub siab thiab kev tiv taus corrosion. Thaum tsim cov kav dej roj thiab roj av uas muaj zog, muaj zog, zoo, thiab ntev, cov kav dej hlau uas xav tau feem ntau yog cov kav dej loj uas muaj txoj kab uas hla tuab ntawm cov yeeb nkab ncaj nraim. Raws li tus qauv API, hauv cov kav dej roj thiab roj av loj, thaum hla dhau thaj chaw Class 1 thiab Class 2 (xws li thaj chaw roob, ntug dej hiav txwv, thiab thaj chaw nroog uas muaj neeg nyob coob), txoj kab uas hla ncaj nraim yog tib hom kav dej uas tau xaiv. Raws li ntau txoj kev tsim, nws tuaj yeem faib ua: U0E / JCOE / HME.

Kev vuam hlau SSAW (spiral submerged arc welding) txhais tau tias thaum dov lub yeeb nkab, nws qhov kev taw qhia mus tom ntej yog nyob rau ntawm lub kaum sab xis (kho tau) rau txoj kab nruab nrab ntawm lub yeeb nkab tsim, thiab kev vuam raug ua thaum lub sijhawm tsim, thiab nws qhov kev vuam tsim ib txoj kab kauv. Qhov zoo yog tias tib yam kev qhia tshwj xeeb tuaj yeem tsim cov yeeb nkab hlau ntawm ntau txoj kab uas hla, cov khoom siv raw muaj ntau yam kev hloov pauv, qhov vuam tuaj yeem zam kev ntxhov siab tseem ceeb, thiab kev ntxhov siab zoo. Qhov tsis zoo yog tias qhov loj me geometric tsis zoo. Qhov ntev ntawm qhov vuam ntev dua li ntawm txoj kab ncaj. Cov kab nrib pleb, qhov hws, cov khoom siv slag thiab kev hloov pauv vuam yog qhov tshwm sim. Rau cov qhov tsis zoo ntawm kev vuam, kev ntxhov siab vuam yog nyob rau hauv lub xeev kev ntxhov siab tensile.

Cov qauv tsim ntawm cov kav dej roj thiab roj dav dav hais tias cov kauv submerged arc tsuas yog siv tau rau hauv Chav Kawm 3 thiab Chav Kawm 4 thaj chaw. Tom qab txhim kho cov txheej txheem txawv teb chaws, cov khoom siv raw raug hloov nrog cov phaj hlau kom cais cov duab thiab vuam. Tom qab ua ntej vuam thiab raug, qhov vuam txoj kab uas hla yuav nthuav dav tom qab vuam txias. Qhov zoo ntawm vuam yog ze rau UOE yeeb nkab.
Tam sim no, tsis muaj cov txheej txheem zoo li no hauv Suav teb. Qhov no yog qhov kev coj ua ntawm kev txhim kho rau peb lub Hoobkas. Lub raj xa roj "West-East Gas Transmission" tseem tsim tawm raws li cov txheej txheem ib txwm muaj, tab sis lub cheeb ntawm qhov kawg ntawm lub raj tau nthuav dav.
Feem ntau Tebchaws Meskas, Nyiv Pooj thiab Lub Tebchaws Yelemees tsis kam siv SSAW thiab ntseeg tias cov kab tseem ceeb yuav tsum tsis txhob siv SSAW.
Canada thiab Ltalis ib feem siv SSAW, thiab Lavxias siv SSAW me me. Lawv tau tsim cov xwm txheej ntxiv nruj heev. Vim yog keeb kwm, feem ntau cov kab hauv tsev tseem siv SSAW. Cov khoom siv raw hloov mus rau phaj hlau kom cais kev tsim thiab vuam. Tom qab ua ntej vuam thiab raug, qhov vuam txoj kab uas hla yuav nthuav dav tom qab vuam txias. Qhov zoo ntawm vuam yog ze rau UOE yeeb nkab.
Cov yeeb nkab ERW ncaj seam welded feem ntau yog siv ua hlau casing hauv kev lag luam fais fab. Cov yam ntxwv kev ua tau zoo: 100% kev kuaj ultrasonic ntawm cov khoom niam txiv ua kom ntseeg tau tias lub cev yeeb nkab zoo; tsis muaj cov txheej txheem unwinding-disc shearing, thiab cov khoom niam txiv muaj tsawg dua pitting thiab khawb; cov yeeb nkab tiav tom qab tshem tawm kev ntxhov siab feem ntau tsis muaj kev ntxhov siab seem; qhov vuam luv luv thiab qhov tshwm sim ntawm qhov tsis zoo yog me me; nws tuaj yeem thauj cov roj av noo noo; tom qab nthuav dav txoj kab uas hla, qhov tseeb ntawm qhov loj me ntawm cov yeeb nkab hlau yog siab; kev vuam yog ua tiav hauv txoj kab ncaj nraim hauv txoj kab rov tav tom qab ua tiav, yog li qhov tsis sib xws, qhov qhib seam, thiab qhov ncig ntawm txoj kab uas hla yeeb nkab raug tswj tau zoo, thiab qhov zoo ntawm kev vuam zoo heev. Cov qauv ua tau khoom: API 5L, API 5CT, ASTM, EN10219-2, GB / T9711, 14291-2006 thiab lwm yam qauv tshiab. Cov khoom siv hlau muaj xws li: GRB, X42, X52, X60, X65, X70, J55, K55, N80, L80, P110, thiab lwm yam. Cov khoom siv dav siv hauv roj, roj av, roj thee, cov chaw tsuas thee, tshuab, hluav taws xob, piling thiab lwm yam. Cov khoom siv thev naus laus zis siab heev: xws li W-FF molding, cov khoom siv high-frequency induction welding, ultrasonic flaw detection, magnetic flux leakage flaw detection, thiab cov cuab yeej kuaj siab heev: xws li metallographic analysis, Vickers hardness tester, impact testing machine, spectrum analyzer, universal testing machine thiab lwm yam khoom siv. Cov khoom raug xa tawm mus rau South America, North America, European Union, Southeast Asia thiab lwm qhov chaw. Tau ntau xyoo, lawv tau txais kev txais tos zoo los ntawm cov neeg siv khoom thoob plaws ntiaj teb.

Peb lub tuam txhab muab kev pabcuamEN10210S235JRH, S275JOH, S275J2H, S355JOH,S355J2H, S355K2H, nrog rau cov lus qhia tshwj xeeb txij li sab nraud txoj kab uas hla 219-1216, phab ntsa tuab 6-40, thiab lub Hoobkas lav thawj. Cov neeg siv khoom thoob plaws ntiaj teb tuaj yeem yuav.