The use of square pipes has penetrated into all areas of our society, but steel products have a shortcoming that is oxidized and rusted, and corrosion protection is imminent. There are many anti-corrosion processes such as oiling, galvanizing, and spraying, each with its advantages and disadvantages

1. No. On the one hand, because the galvanized square tube has a galvanized layer, it is superior to the ordinary welded square tube. It also has better strength, toughness, and other process properties. Its surface has gloss, making it more widely used. Applications include glass Curtain walls, pow