... rolled / cold drawnl Place of Origin: Shandong Zhongzheng Steel Pipe Manufacturing Co., Ltdl Material : JIS G3454 STPG370, JIS G4051 S20C, JIS G4051 ... station , shiping , chemical industry ,environment protection , traffic,food industry ,medical equipment and so on .l Packing:Bundles ,seaworthy wooden cases, with ...