What Are The Main Steel Grades For Line Pipe?
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- May 16,2026
The steel grades specified in GB/T 9711 and API 5L cover a wide range, from low steel grade to ultra-high steel grade: L175/A25、L210/A、L245/B、L290/X42、L320/X46、L360/X52、L390/X56、L415/X60、L450/X65、L485/X70、L555/X80、L625/X90、L690/X100、L830/X120 Etc. At present, the commonly used steel grades in the project are L245/X42 to L555/X80.