Wide cold rolled steel material is rolled to the set thickness. According to customer requirements, the steel plate could be un-coated, or coated with copper or nickel. The coil type strip that was slit to fit the external diameter of the tube is welded using high frequency electric resistance welding. Automatic heat input controller that was developed through the cooperation with a university has been used. As a result, not only the quality of welding but also durability has improved. In addition, to prevent surface corrosion, copper plating and galvanized coating have been used. Moreover, in recent years, a new product with maximum corrosion protection has been developed by using galvalume and its excellence has been recognized.
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Sin-ri, Jinwi-myeon, Pyeongtaek Si GYEONGGI-DO, 경기도,
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