Can galvanized square tubes and angle iron be welded together?
Yes, if the requirement is not high, it can be welded directly. If the requirement is high, the zinc coating on the galvanized square pipe can be polished off before welding, and then welded. However, two kinds of welding methods, welding well, must be carried out at the weld corrosion. Now there is a special coating for hot-dip galvanizing on the market. It is characterized by high zinc content and 96% zinc content. It can provide similar anticorrosive effect to hot-dip galvanizing for repairing parts.
If you do not clean out the galvanized layer or is not completely clear, it will cause the zinc layer and instantaneous combustion will produce a large number of yellow white floc toxic gases, the most serious is will have a direct effect on the magnetic blow angle due to interruption of welding.
First of all, must use electric angle mill will square to overlap or butt, to apply welding parts of zinc coating wear off, ask to expose the original wood luster so far.
