Hot dip galvanised trays covers are used for covering electrical cable trays. The material is h. R. Steel which is then zinc coated upto 65 microns , so that moisture does not have any effect on the product. This helps the tray to remain corrosion free for years. Hot dip galvanised trays are mush better in corrosion resistence than regular pre galvanised trays and hence these trays are generally used for outdoor applications and also in areas where there is more moisture. Also these trays are recommended in chemical industries.