spiral weld carbon steel pipe 1. Grade: Q345B, API X42 - X80, L245, L555, J55, N80 ... , GB/T9711.1-97, API Spec 5LSpecification of SSAW Steel Pipe:1. Outside Diameter: 219~2420mm,2. Wall Thickness: 5-20mm ... Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.Advantage of SSAW Steel Pipe1. Both sides of SSAW ...