1) Seamless Outside diameter: 20 - 1200mm 2) Seamless Thickness: 150mm 3) Manufacturing standard: ASTM GB DIN JIS 4) Bevel,varnish to be confirmed 5) Suitable for high pressure, anti- corrossion (power plant, refinary plant equipment) and long distance conveyance of gas / fluid 6) Standards: A335 P11 to P91; A213 T11 to T91; seaworthy