Cold Rolled Pipes We are ISO and PED certified professional manufacturer for stainless steel seamless pipes and tubes Cold Rolled Pipes304, 304l, 310s, 316l, 321, 347, s 31803Astm asme a/sa 312, a/sa 213, a 269, a/sa 789, a/sa 790o.d. from 10mm to 406mmw.t. from 1mm to 30mm