api 5l b erw steel pipe 1)Grades:304,304L,316,316L,317,310 2)OD:4-426mm 3)WT:1-50mm 4)Standard:ATSM,AISI,DIN, model number: H40, J55, K55, N80, L80, P110, C75,C95Mechanical properties Standard codesModels of steel tubesTensity strength MPaYield strength MPaElongationHardnessAPI SPEC 5CTJ55≥517379552check the tableK55≥517≥655N80≥689552758L80(13Cr)≥655552655≤241HBP110≥862758965Chemicalcomposition: ...