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Line Pipe (Seamless Steel Tube and Pipe for Oil and Gas Transportation)

Carbon steel made seamless tube is mainly used in petroleum and natural gas industry for transportation of gas and fluid.

Dimension Tolerance
Standards Outer Diameter Tolerance Thickness Tolerance
API SPEC5L D < 60.3 +0.41mm-0.80mm +15%S, 12.5%S
API SPEC5L D≥60.3 +0.75%D-0.75%D
Mechanical Properties
Standards Steel Grade Yield Strength (MPa) Tensile Strength ( MPa) Elongation (%) Impact Energy (J)
APISPEC5L PSL 1
B ≥241. ≥414
X42 ≥290 ≥414
X46 ≥317 ≥434
X52 ≥359 ≥455
X56 ≥386 ≥490
PSL 2
Min Max Min Max Min
B 241 448 441 758 41 (27)
X42 290 496 414 758 41 (27)
X46 317 524 434 758 41 (27)
X52 359 531 455 758 41 (27)
X56 386 544 490 758 41 (27)
Chemical Composition (%)
Standards Steel Grade C Mn P S
Max Max Max Max
API SPEC 5L PSL 1
B 0.28 1.2 0.03 0.03
X42 0.28 1.3 0.03 0.03
X46,X52,X56 0.28 1.4 0.03 0.03
PSL 2
B 0.24 1.2 0.25 0.015
X42 0.24 1.3 0.25 0.015
X46,X52,X56 0.24 1.4 0.25 0.015
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