What does L mean in pipe material L245?

2010-09-03View Original

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What does L mean in pipe material L245? Is it threaded welding or drawing?

Reply #22010-09-03

According to GB9711.1/1997 for pipeline steel pipes, this grade is equivalent to API 5L Gr.B steel from the American Petroleum Institute; the “L” in this designation stands for Line. Its composition is similar to that of Q235B, with a higher yield strength by 10%, and the sulfur and phosphorus contents should be kept below 0.3%.

Reply #32010-09-06

L is an abbreviation for line; L245 belongs to pipeline steel, with a yield strength of 245 MPa, which is equivalent to 20#.

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What does L mean in pipe material L245?

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