The most common types are: 1. Perforated GI Cable Trays Contain evenly spaced holes for proper ventilation and heat dissipation. Ladder Type GI Cable Trays It comprises two parallel side rails connected by. The four primary materials—galvanized steel, stainless steel, aluminum, and FRP (Fiber Reinforced Plastic/GRP)—each serve distinct market segments with different cost structures, performance characteristics, and certification requirements. Cost data from industry sources ; temperature ratings. There are several main types of galvanized cable trays used in various applications for supporting and organizing electrical cables. Galvanized Cable trays made by JLH Electric can be divided into pre-galvanized cable trays, GI cable trays and HDG cable trays, according to surface treatment. The steel sheets used to make up the PG trays are zinc-coated. These are slick, polished, and cheaper. Ordinarily, the coating thickness ranges between 12 and 20microns (Z120-Z275). They are ideal in office buildings or factories that are clean. Due to their corrosion-resistant abilities, the GI tray systems are preferred over aluminum or plastic.
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