As a steel pipes and pipe fittings supplier, Nansteel Manufacturing Co.,Ltd, provide any standards & grades steel products, API 5L GR.B or X45-80, API 5CT, ASTM A53 GR.B, ASTM A106 GR.B, ASTM A213, ASTM A312, ASTM A333, ASTM A335, ASTM A519, ASTM A179, ASTM A192,ASTM A672, DIN 1629, DIN 21391, EN 10210, EN 10219 etc. Out diameter of sizes is from 21.3mm to 3500mm, thickcess is from 2.11mm to 60mm. Huge stock is in warehouses, if not, also can custom-made or produce. And fittings including flange, valve, tee, reducer, elbow etc.