API 5L PSL2 X42 Ob chav -Sided Submerged Arc Vuam (DSAW) Hlau Yeeb Nkab
Lub ntsiab lus tseem ceeb
API 5L PSL2 Qib X42 DSAW steel yeeb nkabyog qhov nruab nrab - lub zog kab yeeb nkab tsim los rau American Petroleum Institute specification. Qhov kev xaiv "X42" qhia qhov tsawg kawg nkaus tawm lub zog ntawm42,000 psi (290 MPa). PSL2 yog qib kev ua tau zoo nrog cov kev cai nruj dua li PSL1 .
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | API 5L (46th tsab) |
| PSL Qib | PSL2 - ua kom zoo dua qub |
| Qib | X42 (L290) |
| Min Yield zog | 290 MPa (42,100 psi) |
| Max Yield zog | 496-579 MPa (72,000-84,000 psi) |
| Min Tensile zog | 414-436 MPa (60,000-63,200 psi) |
| Max Tensile zog | 758 MPa (110,000 psi) |
| Yield-rau-Tensile Ratio | Tsawg dua lossis sib npaug li 0.93 |
| Qhov Loj (DSAW) | 16 "- 100" OD (406mm txog 2540mm) |
| Phab ntsa Thickness | 6.0mm txog 50mm |
| Ntev | 6m mus rau 12m standard |
Tshuaj muaj pes tsawg leeg (PSL2)
| Element | Max % | PSL1 Sib piv |
|---|---|---|
| Cov pa roj carbon (C) | 0.22-0.24% | PSL1: 0.26-0.28% |
| Manganese (Mn) | 1.40% | Zoo sib xws |
| Phosphorus (P) | 0.025% | PSL1: 0.030% |
| Sulfur (S) | 0.015% | PSL1: 0.030% (txo 50%) |
| Silicon (Si) | 0.45% | Tsis tau teev rau PSL1 |
PSL1 vs PSL2 sib piv
| Feature | PSL1 | PSL2 |
|---|---|---|
| Cov pa roj carbon max | 0.28% | 0.22-0.24% |
| Sulfur max | 0.030% | 0.015% |
| Yield zog | Tsawg kawg nkaus (290 MPa) | Min & Max (290-496 MPa) |
| Yield-rau-Tensile Ratio | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 |
| Kev ntsuam xyuas cuam tshuam | Tsis xav tau | Yuav tsum tau(27J ntawm 0 degree) |
| Traceability | Batch qib | Pipe -los ntawm -pipe |
| Kev siv yam | Kev pabcuam dav dav | Kev pabcuam tseem ceeb, kev pabcuam qaub, qis temp |
DSAW Manufacturing
Ob -sab vuam(sab hauv + sab nraud) tsim ib qho siab - zoo weld nugget
Siv raucov kab loj loj(16 "mus rau 100" +)
Txoj kev: JCOE lossis UOE tsim
Cov ntawv thov siv
Roj thiab roj xa mus kav
Natural gas sib sau ua ke kab
Kev pabcuam qaub (H₂S ib puag ncig)
Tsawg-kev pabcuam kub
Kev xa dej mains
Cov ntsiab lus
API 5L PSL2 X42 DSAW steel yeeb nkabyog ib qho nruab nrab -strength kab yeeb nkab nrog txhim khu kev qha zoo. Cov txiaj ntsig tseem ceeb tshaj PSL1 suav nrog qhov yuav tsum tau ntsuas qhov cuam tshuam, 50% qis cov ntsiab lus sulfur (0.015% vs 0.030%), kev txwv lub zog siab tshaj plaws, thiab tag nrho traceability. Muaj nyob rau hauv loj diameters ntawm 16 "mus rau 100" + .
Thaum ordering, qhia:API 5L PSL2 Qib X42, DSAW, Loj (OD x WT), Length, Impact test temperature.
