Spiral Pipe
Specifications of spiral pipe: 1.outside size:219-3000mm 2.material: Q235, Q345, X42-X80.ST52, ST45, A53 and so on 3.criterion for implementation:SY/ T3087-1999, SY/ T5037-2000, GB/ T9711.1, GB/ T9711.2, API 5L, API 5CT Technique Welded Place of ...