ERW yog high-frequency kuj welding-ncaj seam welded yeeb nkab; LSAW yog submerged arc vuam-ncaj seam welded yeeb nkab; ob leeg yog cov ncaj seam welded kav, tab sis cov txheej txheem vuam thiab siv ob yog sib txawv, yog li lawv tsis tuaj yeem sawv cev ncaj seam welded kav ib leeg. SSAW-spiral welding-kauv welded kav ntau dua.

Qhov sib txawv thiab siv ERW, LSAW thiab SSAW steel kav

Ncaj seam siab zaus (ERW steel yeeb nkab) muab faib ua induction welding thiab hu rau vuam raws li kev sib txawv vuam. Nws siv kub dov dav coils ua raw khoom. Tom qab ua ntej khoov, nruam tsim, vuam, kev kho cua sov, gluing, straightening, txiav, nws muaj qhov zoo ntawm luv welds, siab precision, uniform phab ntsa thickness, zoo nto zoo thiab siab siab piv nrog muab kauv. Txawm li cas los xij, qhov tsis zoo yog tias tsuas yog nyias-walled kav nrog me me thiab nruab nrab diameters tuaj yeem tsim tau. Fusion, groove zoo li corrosion tsis xws luag. Tam sim no cov chaw siv dav siv hauv nroog yog cov roj av hauv nroog thiab cov khoom siv roj av.

Ncaj seam submerged arc vuam (LSAW steel yeeb nkab) yog tsim los ntawm kev siv ib qho nruab nrab thiab tuab phaj raws li raw khoom, nias (rolling) steel phaj nyob rau hauv lub pwm los yog txoj kev tshuab, ob-sided submerged arc vuam, thiab nthuav cov kab. Cov khoom tiav lawm muaj ntau yam kev qhia tshwj xeeb, zoo weld toughness, plasticity, uniformity thiab ntom, thiab muaj qhov zoo ntawm cov yeeb nkab txoj kab uas hla loj, tuab yeeb nkab phab ntsa, siab kub tsis kam, kub tsis kam thiab corrosion kuj. Thaum tsim kom muaj zog, siab tawv, siab zoo nyob deb ntawm cov roj thiab cov kav dej, cov kav dej hlau yuav tsum yog feem ntau loj-inch tuab-walled ncaj seam submerged arc. Raws li API tus qauv, nyob rau hauv cov kav dej loj thiab cov roj av, thaum dhau los ntawm Chav Kawm 1 thiab Chav Kawm 2 (xws li thaj chaw roob, seabeds, thiab cov neeg nyob hauv nroog loj), ncaj submerged arc yog tib hom raj xa dej. Raws li cov txheej txheem sib txawv, nws tuaj yeem muab faib ua: U0E / JCOE / HME.

Kauv submerged arc vuam (SSAW steel yeeb nkab) txhais tau hais tias thaum dov cov yeeb nkab, nws cov kev taw qhia pem hauv ntej yog nyob rau ntawm lub kaum sab xis (kho tau) mus rau hauv nruab nrab kab ntawm cov yeeb nkab sib sau, thiab vuam yog ua thaum lub sij hawm tsim, thiab nws cov weld tsim ib kab kauv. Qhov zoo dua yog tias tib qhov kev qhia tshwj xeeb tuaj yeem tsim cov kav hlau ntawm ntau txoj kab uas hla, cov khoom siv raw muaj ntau yam kev hloov pauv, cov vuam tuaj yeem zam qhov kev ntxhov siab loj, thiab kev ntxhov siab zoo. Qhov tsis zoo yog qhov loj geometric tsis zoo. Qhov ntev ntawm qhov vuam yog ntev dua li ntawm txoj kab ncaj nraim. Cracks, pores, slag inclusions thiab vuam deviations yog feem ntau tshwm sim. Rau vuam tsis xws luag, vuam kev nyuaj siab yog nyob rau hauv lub tensile stress state.

Cov qauv tsim tshwj xeeb ntawm cov kav dej dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav dav hlau dav hlau thoob ntiaj teb. Tom qab txhim kho cov txheej txheem txawv teb chaws, cov khoom siv raw yog hloov nrog cov hlau phaj kom cais kev sib sau thiab vuam. Tom qab pre-welding thiab precision, vuam txoj kab uas hla yuav nthuav dav tom qab txias vuam. Qhov vuam zoo yog ze rau UOE yeeb nkab.
Tam sim no, tsis muaj cov txheej txheem zoo li no hauv Suav teb. Qhov no yog cov kev taw qhia ntawm kev txhim kho rau peb lub Hoobkas. Cov kav dej "West-East-East Gas Transmission" tseem yog tsim raws li cov txheej txheem ib txwm muaj, tab sis txoj kab uas hla ntawm cov yeeb nkab kawg tau nthuav dav.
Tebchaws Asmeskas, Nyiv thiab Lub Tebchaws Yelemees feem ntau tsis kam siv SSAW thiab ntseeg tias txoj kab tseem ceeb yuav tsum tsis txhob siv SSAW.
Canada thiab Ltalis ib nrab siv SSAW, thiab Russia siv SSAW hauv me me. Lawv tau tsim cov txheej txheem ntxiv nruj heev. Vim muaj keeb kwm keeb kwm, feem ntau cov kab hauv tsev tseem siv SSAW. Cov khoom siv raw yog hloov mus rau steel phaj kom cais kev sib sau thiab vuam. Tom qab pre-welding thiab precision, vuam txoj kab uas hla yuav nthuav dav tom qab txias vuam. Qhov vuam zoo yog ze rau UOE yeeb nkab.
ERW ncaj seam welded yeeb nkab feem ntau yog siv los ua hlau casing hauv kev lag luam fais fab. Cov yam ntxwv ua tau zoo: 100% kev kuaj ultrasonic ntawm niam txiv cov khoom kom ntseeg tau qhov zoo ntawm cov yeeb nkab lub cev; tsis muaj txheej txheem unwinding-disc shearing, thiab cov khoom siv niam txiv muaj tsawg pitting thiab khawb; cov yeeb nkab tiav tom qab tshem tawm kev ntxhov siab yeej tsis muaj kev ntxhov siab seem; lub vuam yog luv luv thiab qhov tshwm sim ntawm qhov tsis xws luag yog me me; nws muaj peev xwm conditionally thauj humid qaub natural gas; Tom qab txoj kab uas hla expansion, qhov geometric loj qhov tseeb ntawm cov yeeb nkab steel yog siab; vuam yog nqa tawm nyob rau hauv ib txoj kab ncaj nraim nyob rau hauv ib tug kab rov tav txoj hauj lwm tom qab tsim tiav, yog li lub misalignment, seam qhib, thiab cov yeeb nkab txoj kab uas hla yog tswj tau zoo, thiab cov vuam zoo yog zoo heev. Cov qauv kev ua tau zoo: API 5L, API 5CT, ASTM, EN10219-2, GB / T9711, 14291-2006 thiab lwm yam qauv tshiab. Cov khoom lag luam steel qib muaj xws li: GRB, X42, X52, X60, X65, X70, J55, K55, N80, L80, P110, thiab lwm yam. Cov khoom siv dav siv hauv roj, nkev, roj av, roj av, thee mines, machinery, hluav taws xob, piling thiab lwm yam. Cov txheej txheem txheej txheem thev naus laus zis: xws li W-FF molding, cov khoom siv high-frequency induction welding, ultrasonic flaw detection, magnetic flux to flaw detection, thiab high-end test instruments: xws li metallographic analysis, Vickers hardness tester, impact tester, spectrum analyzer, universal testing machine and other equipment. 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 txiaj ntsig zoo los ntawm cov neeg siv khoom thoob plaws ntiaj teb.

Peb lub tuam txhab muabTS EN 10210S235JRH, S275JOH, S275J2H, S355JOH,S355J2H, S355K2H, nrog cov lus qhia tshwj xeeb xws li sab nraud 219-1216, phab ntsa thickness 6-40, thiab thawj lub Hoobkas lav. Cov neeg siv khoom thoob ntiaj teb zoo siab txais tos yuav.