... Steel Pipe MaterialCarbon Steel, Stainless Steel, Alloy Steel, Nickel Alloy Steel, Duplex Steel and Super Duplex SteelSteel Pipe TypeSeamless Steel Pipe, Welded Steel Pipe, LSAW, SSAW, Galvanized Steel Pipe, Electric-resistance Welded Steel Pipe, Electric-fusion Welded Steel ... T91;Q235, Q195, Q345, 20#, A53(A,B), 10#, 16Mn, A106(B,C), ... , API P110, St42, St45, St52.4API 5L A, B, X42, X46, X52, X56, X60, ...