... 3.Length:5-12M BV&SGS High pressure Boiler pipe St45.8 1.OD:21-711MM2.WT ... -12MBV&SGS Description15CrMo,34CrMo4,Cr5Mo Alloy steel pipe StandardASTM A213,A200,A335,DIN17175,JIS G3458 G3462 ... rolled,cold rolledSurfacePolished,black,bright.ApplicationElectrical Resistance,Bolier Pipe, Heat Exchanger Tubes,Petroleum and Oil,Chemical Industry, Energy ... --Angle steel/H&I Beams High pressure Boiler pipe St45.8