Longitudinal Submerged Arc Welded Kab Yeeb
Longitudinal submerged arc welded (LSAW) kab yeeb nkab yog ib qho khoom siv yeeb nkab uas tsim los ntawm qib xws li X42, X46, X52, X56, X70 thiab lawv L-series sib npaug. Cov khoom no yog siv nyob rau hauv cov roj thiab cov nkev kis tau tus mob, nroog pipeline networks, lub tsev thiab hydraulic engineering tej yaam num, conveying xov xwm xws li dej, thee roj thiab liquefied roj av roj (LPG).
Kev tsim khoom
LSAW yeeb nkab yog tsim los ntawm hnyav hlau phaj los ntawm JCOE los yog UOE txoj kev, ua raws lisubmerged arc vuam ntawm ob sab hauv thiab sab nraud longitudinal seams. Ob chav -sided weld muab kev nkag mus rau tag nrho thiab kev sib koom ua ke zoo, ua rau LSAW txoj kev nyiam rau cov kab loj loj thiab cov phab ntsa tuab uas muaj peev xwm ERW tsis txaus.
Specification Summary
| Parameter | Ntau yam / Option |
|---|---|
| Cov qauv | API 5L PSL1/PSL2, API 5CT, API 2B, ASTM A53/A252/A671/A672, DIN 2458, IS 3589, EN 10217, EN 10219-1, EN 10224, GB, SY/T 503, SY/T 503 GB/T 9711.1/.2 |
| Qib | API 5L GR A, GR B, L235–L355, X42, X46, X56, X60, X65, X70; API 2B 2H/2W; ASTM A252 GR2 / GR3; EN S275-S355; JIS STK400/STK500/SS400 |
| Sab nraud txoj kab uas hla | 457.2-1422.2 hli (18 "-56") |
| Phab ntsa thickness | 7.92-50.8 hli (0.312 "-2") |
| Ntev | 3–12.3 m |
Kev xeem yuav tsum tau
Txhua LSAW yeeb nkab tau txheeb xyuas los ntawm kev tshuaj ntsuam xyuas tshuaj, cov khoom siv kho tshuab (tensile, yield, elongation), metallographic kuaj, khoov thiab Charpy V-notch impact tests, DWTT, flattening and blow tests, X-ray test of the weld, exterior size inspection, ultrasonic test and hydrostatic testing.
Kev xaiv kho saum npoo
Nyob ntawm qhov project specification, LSAW kav yuav muab tau nrog fusion-bonded epoxy (FBE), thee tar epoxy,3 PEB, kua roj vanish, bitumen los yog dub roj txheej rau corrosion tiv thaiv nyob rau hauv faus thiab marine kev pab cuam.
Cov lus nug nquag
Qhov txawv ntawm LSAW thiab SSAW yog dab tsi?
LSAW muaj ib txoj hlua txuas ntev thiab yog tsim los ntawm phaj; SSAW muaj ib tug kauv weld thiab yog tsim los ntawm coil. LSAW feem ntau muaj kev tswj kom zoo dua rau cov phab ntsa tuab.
Vim li cas thiaj xaiv LSAW rau cov kab loj loj?
LSAW tuaj yeem ua tiav txoj kab uas hla ntawm 18 "mus rau 56" nrog cov phab ntsa tuab txog 50.8 hli, npog siab - cov kev cai ntawm lub cev uas muaj peev xwm tshaj ERW.
Cov qib twg muaj nyob hauv LSAW?
API 5L qib A, B, X42 txog X70 thiab lawv cov L-series, ntxiv rau cov qauv tsim thiab pawg rau ASTM, EN, JIS thiab GB qauv.
Puas yog 100% kev soj ntsuam vuam xav tau?
Yog lawm. X-ray lossis ultrasonic kuaj ntawm tag nrho longitudinal weld seam yog tus qauv rau PSL2 thiab rau siab- tej yaam num kev ncaj ncees.
LSAW yeeb nkab puas tuaj yeem yog 3PE coated?
Tau. 3PE, FBE, thee tar epoxy thiab lwm yam txheej txheej yog siv rau ib txoj haujlwm tshwj xeeb rau kev pabcuam faus.
Cov kev ntsuam xyuas dab tsi ua pov thawj LSAW zoo?
Hydrostatic testing, tensile thiab Charpy tests, DWTT, flattening, X-ray thiab UT ntawm welds, ntxiv rau qhov loj me thiab qhov chaw soj ntsuam.
