| SPECIFICATIONS FOR LSAW STEEL PIPE | |
| 1. Loj | 1) OD: 406mm-1500mm |
| 2) Phab ntsa Thickness: 8mm-50mm | |
| 3) TXC 20, SCH40, STD, XS, SCH80 | |
| 2.Standard: | ASTM A53, API 5LTS EN 10219,TS EN 10210,ASTM A252, ASTM A252ASTM A500, thiab lwm yam |
| 3. Khoom siv | ASTM A53 Gr.B.API 5L Gr.BX42,X52,X60,X70,X80,S235JR,S355J0H, thiab lwm yam |
| 4. Kev siv: | 1) Tsis tshua muaj siab ua kua, dej, roj, roj, kab yeeb nkab |
| 2) cov qauv yeeb nkab, cov yeeb nkab piling tsim | |
| 3) laj kab, qhov rooj yeeb nkab | |
| 5. Txheej | 1) Bared 2) Dub Painted (cov kua roj vanish txheej) 3) Galvanized 4) Yog ' 5) PE, 3PE, FBE, comosion resistant txheej, Anti corrosion txheej |
| 6.Technique | longitudinal welded steel yeeb nkab |
| 7. Kev tshuaj xyuas: | Nrog Hyd raulic Testing, Eddy Tam sim no, RT, UT los yog kev soj ntsuam los ntawm 3rd tog |
| 8. Kev xa khoom | Thawv, Bulk Vessel. |
| 9. Hais txog Peb Qhov Zoo: | 1) Tsis muaj kev puas tsuaj, tsis khoov 2) tsis muaj burrs lossis ntse npoo thiab tsis muaj khawb 3) Dawb rau oiled & cim 4) Tag nrho cov khoom tuaj yeem raug kuaj xyuas los ntawm tus neeg thib peb tshuaj xyuas ua ntej xa khoom |
Engineering rooj plaub ntawm Hong Kong
Engineering Case ntawm Qatar
Engineering rooj plaub ntawm Turkey
LSAW Tubeadopts submerged arc vuam tshuab, siv muab tub lim welding, particle tiv thaiv flux faus arc.
LSAW yog cov lus Askiv luv ntawm submerged arc welded ncaj seam steel yeeb nkab.Cov txheej txheem tsim khoom ntawm submerged arc welded ncaj seam steel yeeb nkab suav nrog JCOE txoj kev siv tshuab, coil tsim submerged arc vuam tshuab thiab UOE txoj kev siv tshuab.
Cov txheej txheem ntawm kev tsim Longitudinal Submerged-arc Welded (LSAW) Pipe yog raws li nram no:
Ultrasonic phaj soj ntsuam → ntug milling → pre-bending → sib sau → Pre-welding → Internal vuam → Sab nraud vuam → Ultrasonic tshuaj xyuas → X-ray tshuaj ntsuam → nthuav → hydraulic kuaj → l.Chamfering → Ultrasonic tshuaj xyuas → X-ray tshuaj ntsuam → Sib nqus particle soj ntsuam ntawm lub raj kawg
| Tensile Requirements | |||
| Qib 1 | Qib 2 | Qib 3 | |
| Tensile zog, min, psi (MPa) | 50 000 (345) | 60 000 (415) | 66 000 (455) |
| Tawm taw tes lossis tawm lub zog, min, psi (MPa) | 30000 (205) | 35000 (240) | 45 000 (310) |
| Basic yam tsawg kawg nkaus elongation rau nominal phab ntsa thicknesses 6 in. (7.9 mm) los yog ntau tshaj: Elongation nyob rau hauv 8 in. (203.2 mm), min, % Elongation nyob rau hauv 2 in. (50.8 mm), min, % | 18 30 | 14 25 | ... 20 |
| Rau nominal phab ntsa thicknesses tsawg dua %6 nyob rau hauv. (7.9 hli), txiav tawm los ntawm qhov yooj yim yam tsawg kawg nkaus elongation nyob rau hauv 2 in. (50.08 mm) rau txhua Vzi - nyob rau hauv. (0.8 hli) txo nyob rau hauv nominal phab ntsa thickness hauv qab no %6 nyob rau hauv. (7.9 hli), hauv feem pua cov ntsiab lus | 1.5 A | 1.25 A | 1.0A... |
Kev Ntsuas Hydrostatic
NDT (RT) Testing
NDT (UT) Testing
Bending Test—Qhov ntev txaus ntawm cov yeeb nkab yuav tsum sawv ntsug ntawm qhov txias ntawm 90 ° nyob ib ncig ntawm lub cylindrical mandrel.
Flattening test-Txawm hais tias kev sim tsis tas yuav tsum tau ua, cov yeeb nkab yuav tsum muaj peev xwm ua tau raws li qhov yuav tsum tau ua kom tiav qhov kev xeem.
Hydrostatic Test -tshwj tsis yog raws li kev tso cai, txhua qhov ntev ntawm cov yeeb nkab yuav tsum raug kuaj xyuas hydro-static yam tsis muaj dej los ntawm cov yeeb nkab phab ntsa.
Nondestructive electric test-Raws li lwm txoj hauv kev ntsuas hydro-static, tag nrho lub cev ntawm txhua cov yeeb nkab yuav tsum tau sim nrog kev ntsuas hluav taws xob tsis zoo.qhov twg tsis muaj kev ntsuas hluav taws xob ua tiav, qhov ntev yuav tsum raug cim nrog cov ntawv "NDE"
Kev kuaj ultrasonic
Kev ntsuam xyuas tam sim no
Cov yeeb nkab liab qab, txheej txheej dub ( customized);
Ob qhov xaus nrog qhov kawg tiv thaiv;
Plain kawg, bevel kawg;
Kos npe.
| Sab nraud txoj kab uas hla | Sab nraud txoj kab uas hla ntawm cov yeeb nkab pawg yuav tsum tsis txhob sib txawv ntau tshaj ± 1% ntawm lub cheeb sab nraud. | ||
| Phab ntsa thickness | Phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis txhob ntau tshaj 12.5% raws li teev tseg nominal phab ntsa thickness. | ||
| Ntev | Cov yeeb nkab yuav tsum tau muab tso rau hauv ib qho ntev ntev, ob npaug ntawm qhov ntev, lossis ntev ntev raws li tau teev tseg hauv daim ntawv xaj, raws li cov kev txwv hauv qab no: | Ib leeg random lengths | 16 txog 25ft (4.88 txog 7.62mm), nti |
| Muab ob npaug rau random lengths | Tshaj 25ft (7.62m) nrog qhov nruab nrab yam tsawg kawg nkaus ntawm 35ft (10.67m) | ||
| Uniform ntev | ntev raws li tau teev tseg nrog kev tso cai hloov pauv ntawm ± 1 hauv. | ||
| Qhov hnyav | Txhua qhov ntev ntawm cov yeeb nkab pawg yuav tsum tau hnyav nyias thiab nws qhov hnyav yuav tsum tsis txhob sib txawv ntau tshaj 15% tshaj lossis 5% raws li nws qhov hnyav, suav nrog nws qhov ntev thiab nws qhov hnyav ntawm ib chav tsev ntev. | ||
