large diameter welded spiral pipe 1. Grade: Q345B, API X42 - X80, L245, L555, J55, N80 2. Standard: SY/T5037-2000, GB/T Large diameter welded ... -2000, GB/T9711.1-97, API Spec 5L6. Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg ... paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps or according to your requirement7. Inspection: Chemical Component Analysis ...