... -2, SS330, SS400, ASTM 1010, ASTM 1017, ASTM 10205) Manufactured to meet ISO9001, ASTM, API, SAE, DIN, BS, GB and SY ... requirements6)Packing:In square bundles with waterproof paper7) C channel and U channel, tracks are also ... available Stocking: We have a large warehouse in south China with amount 15000 tons per year. High Strength Square Steel Tube With Different Size