... : carbon steel seamless pipe 2. Size: Diameter: 1/2 inch to 24 inch Thickness: 2mm-60mm 3. Steel Grade:A53 (A,B),A106 ... ,X60,st42,st37,st52,SS400,SS490 4. Mill: ( 2inch to10 inch) 5. Pakages: black painting,beveled end,pipe cap,marking,bundles ... size up 3inch 8. Chemical composition: C: 0.17-0.24 Mn:0.35-0.65 P:≤0.035 S:≤0 ...