Hot dip galvanized steel can be welded
The hot dip galvanized steel pipe has excellent atmospheric corrosion resistance, and it can easily form a protective film on the surface at room temperature, which has good corrosion resistance.When the weld is cooled, coat the weld with silver paint to avoid rusting at the weld.
Hot galvanized square tubes can be welded.Hot galvanized pipe, welding needs to be polished galvanized layer, thoroughly remove zinc coating and oil, dust and other debris, exposing the tube itself metal color, and then welding.Zinc melting point of 419.53 degrees Celsius, low melting point, Zinc Oxide Zinc Oxide formed layer of hot combustion in high temperature welding thousands of degrees Celsius in the combustion of white smoke barrier zinc combustion, influence the flow of the weld pool of liquid metal, destruction of welding arc stiffness, the porosity, slag, weld crack.
Hot dip galvanized steel can be welded. The main methods of welding are as follows:1. manual arc welding. Remove the welding seam and the nearby zinc coating before welding. The welding rod can choose J421/J422/J423 and E5001/E5003 welding rod according to different requirements;2. gas metal arc welding. CO2 gas shielded welding can be used.3. argon arc welding.4. resistance welding.
