Specifications SEAMLESS CARBON STEEL PIPE 1)Thickness:2mm-31mm (1/4"-24" ) 2 ... gas, gas, water and some solid materials, pipes, etc..Seamless Carbon Steel Pipe:1.Seamless steel pipe for general use: ASTM A 53 GR.B ... .2mm W.T: SCH10S- SCH120;3.Seamless steel pipe DIN2448/1629,DIN17175, German standard,Steel Grade: st37,st42,st52,st35.8-st45 ... speciation: 5"-13-3/8",127-339.7mm; Seamless Carbon Steel Pipe