... : Q345B, API X42 - X80, L245, L555, J55, N80 2. Standard: SY/T5037-2000, GB/T Spiral weld carbon steel pipeSSAW (Spirally ... . Grade: Q345B, API X42 - X80, L245, L555, J55, N803. Standard: SY/T5037-2000, GB/T9711.1-97, API Spec 5LSpecification of ... Grade: Q345B, API X42 - X80, L245, L555,J55, N805. Standard: SY/T5037-2000, GB/T9711.1-97, API Spec 5L6. Packing ...