... pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on.Steel sheetmaterialDC01,SPCC,ST12,HJ58,HG60,DB685,16Mn,20G ... Steel Tube,Alloy Pipe Number of Employees:51 - 100 People Structural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel ... pipe, carbon stAISI 202 stainless ...