GB/T8162 carbon steel sprial pipe 1. many different sizes of the products 2.. ... pressure A: Pipe and tube Size Range:GB/T8162 carbon steel sprial pipe1) Round pipe diameter: 8mm-3000mm, thickness: 0.4-60.0mm2 ... , or painted C: Length of each pipe: 500mm-16,000mmD: Steel grade: 10#, 20#, A106B, A53B, Q195 Q235, Q345, ST37- ... , A1010, SAE1045, X40, X60, A312, 304, 316 etc GB/T8162 carbon steel sprial pipe