O.D.: 4mm-625mm Thickness: 0.5mm-32mm 1) Pipe O.D.: 4mm-625mm pipe thickness: 0.5mm-32mm L≤19m2) Grade: 310, 321,347, 304, 304L, 316, 316L and etc. 3) Standards: GB/ASTM/ASME/DIN/JIS 4) Applications range: For use in the petroleum, chemical, medical equipment, boiler heat-exchanger and other fields.