Cangzhou spiral steel pipes company is capable of manufacturing Φ219-Φ3500mm (8.62″-138″) double face submerged arc welding spiral steel pipes in 6-25.4mm wall thickness in conformity with API, DNV, ISO, DEP, EN, ASTM, DIN, BS, JIS, GB, CSA standard in long distance transmission of natural gas, oil, chemicals, water, power, thermal power, and ocean dredging, etc.


