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GET PRICEGB/T 21237:L245-L360 Pipeline steel plates are used to fabricate large diameter welded pipes which transport oil and nature gas. This kind of steel plates should havehigh strength, high temperature toughness and excellent weldability. Our company have supplied more than thousands of tons about GB/T 21237: L245-L360 Pipeline Steel Plate for China West-east NG transmission project.
GB/T 21237:L245-L360 Pipeline Steel Plate Chemical composition
| Grade | Chemical composition (mass fraction)/%,≤ | ||||
| C | Si | Mn | P | S | |
| L245 | 0.2 | 0.35 | 1.3 | 0.025 | 0.015 |
| L290 | 0.2 | 0.35 | 1.3 | 0.025 | 0.015 |
| L320 | 0.2 | 0.35 | 1.4 | 0.025 | 0.015 |
| L360 | 0.2 | 0.35 | 1.4 | 0.02 | 0.015 |
GB/T 21237:L245-L360 Pipeline Steel Plate Chemical composition
| Grade | Yield Strength（MPA） | Tensile Strength（MPA） | Yield Ratio， | Impact test | 180° |
| L245 | 245~445 | 415~755 | 0.9 | 80 | d=2a |
| L290 | 290~495 | 415~755 | 0.9 | 80 | d=2a |
| L320 | 320~525 | 435~755 | 0.9 | 90 | d=2a |
| L360 | 360~530 | 460~755 | 0.9 | 90 | d=2a |
Specification Range we mainly supply:
ProductionProcess:
Smelting hot metal in blast furnace→Hot metal pretreatment, desulphurization→Change furnace to smelt→Blowing Argon→LF refine→Continuous steel casting→Casting blank heating→Controlled rolling→Control cooling→Coiling→Put in storage
Our extensive stock profile allows us to confidently supply a whole range of GB/T 21237:L245-L360 Pipeline Steel Plates, if you have any needs about GB/T21237 pipeline steel plate ,please contact us by email [email protected]!
