Steel grades: C45, 4140, 16MnCr5, SAE52100,304,316L,410 Size: all sizes Lead time: 15 days 1) Hot rolled steel pipe,2) Cold drawing steel pipe,3) O.D.: from 22mm to 400mm,wall thickness:from 2mm to 50mm,4) Length:from 500mm to 12000mm,5) Surface: bright/black,6) Standard: GB/JIS/DIN/ASTM, Steel Pipe of various steel grade with good quality