Out diameter: 21.3-610mm Wall thickness: 1.8-22mm Length: 0.312m Steel grade: Api 5l: gr b, x42, x46, x56, x60, x65, x70astm vanish coating, bitumen coating, black oil coating Standard: api 5l, api 5ct, astm 53, en10217, din 2458. Is 3589, jis g3452, bs1387 Applications: low pressure liquid delivery, such as water, gas, oil, oil drilling and machinery manufacturing Test: Chemical component analysis Mechanical properties (ultimate tensile strength, yield strength, elongation) Technical properties (flattening test, bending test, blow test, impact test) Exterior size inspection Hydrostatic test X-ray test