Size(OD) : 13.72mm-914.4mm (1/2"- 36") W.T : 1.65mm-50mm Standard API5L/5CT,ASTMA106/A53,DIN2391,DIN1629.ASTMA179/A192, EN10210, EN10216,EN10208, EN10305, SA213, DIN 17175 Material : GR.A, GR.B, X42, X46, X52, N80, N80Q, L80-1, S355JOH, S355J2H, St44.0, P265GH, P265TR1 Application: Chilled Water Pipe,Drinking Water Pipe,Waste Water Pipe,Structural Tube,Fluid Pipe,Oil and Gas Transportation Pipe ,Mechanical Structure Pipe,Boiler Pipe,etc.