Seamless Steel Pipes for Shipment:320,360,410,460,490
Mechanical property and chemical composition
Standard:
CCS,DNV,LR,GL,ABS,BV,RINA,NK,GB/T5312
Application:Mainly used in boiler for shipment and steam super heater and manufacture of seamless steel pipe(Class I,II of pressure pipe)
Grade:
320,360,410,460,490
Tolerance of Dimension:
| Type of Steel Pipe | Out Diameter(D) | Thickness(S) | | Cold Drawn Pipe | OD(mm) | Tolerance(mm) | Thickness(mm) | Tolerance(mm) | | >30~50 | ±0.3 | ≤30 | ±10% | | >50~219 | ±0.8% | | Hot Rolled Pipe | >219 | ±1.0% | >20 | ±10% |
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Mechanical Property:
| Standard | Grade | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation
(%) | | GB/T5312 | 320 | 320~410 | ≥195 | ≥25 | | 360 | 360~480 | ≥215 | ≥24 | | 410 | 410~530 | ≥235 | ≥22 | | 460 | 460~580 | ≥265 | ≥21 | | 490 | 490~610 | ≥285 | |
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