high pressure boiler pipe 1.we have mtc 2.iso 9001 certificate 3.wall thickness:1-60mm 4.od:6-420mm ASTM A53 GR.B,ASTM A106 GR.B,ASTM A106 GR.C,GB/T8162-2008,GB/T8163-2008 ManufactoryLiaocheng Beiye Steel Pipe Co., LtdItemSeamless Steel Pipe /TubeMaterial:ASTM A 106 Gr B ,ectOD21.3-406.4mm (1/2”-16”)WT2-45mmLSRL or DRL or Fixed length according to your request.ToleranceOD: +/- 1%WT: +12.5% /- 10% ...