Hot dip galvanized steel. Zinc has good corrosion resistance under atmospheric conditions. Galvanizing is used as a way to preserve the cathode metal by dedicating the anode. Its corrosion resistance life depends on the thickness of the galvanized layer and the corrosion rate. The zinc layer thickness of hot dip galvanizing is generally above 65um (455g/m2). The combination of zinc and iron makes the surface form a layer of zinc-iron alloy, which enhances the adhesion of the zinc layer. Foreign hot dip galvanized layer of different environmental conditions in the atmosphere exposure experiment. From the experimental results, hot dip galvanizing can satisfy the requirements of the cable tray life.
Hot dip galvanizing steel has outstanding corrosion resistance and high performance to price ratio, so steel hot dip galvanized bridge is widely used at home and abroad. On the thin-walled and long thin ratio is relatively large components. In the hot dip galvanized simple deformation and other issues, need to be considered in the structure of the cable tray and galvanizing process.
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