Carbon steel used for cable trays shall be protected against corrosion by the following processes: Hot-dip galvanized zinc after fabrication in accordance with ASTM A123/A123M, Coating Grade 65 with an average zinc coating weight of 460 g/m2 per side or coating thickness of. Carbon steel used for cable trays shall be protected against corrosion by the following processes: Hot-dip galvanized zinc after fabrication in accordance with ASTM A123/A123M, Coating Grade 65 with an average zinc coating weight of 460 g/m2 per side or coating thickness of. , ABB offers steel cable tray with pre-galvanized and hot-dip galvanize lvanization is an economical and effective way to protect steel ag tal, naturally oxidizes when exposed to air, but at a much slower rate than steel. Zinc pro-vide sacrificial protection, which means that it cor-rodes while. cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. A cable tray manufacturer will undertake the method of galvanizing the cable tray, and the core reason for it is having a high durability of the product. At Tanya Galvanizers, we help the manufacturers to undergo a proper galvanization that is the initial stage of the work. 55 mils) per. Pre-Galvanized Steel: Straight sections, fitting side rails, rungs, and covers shall be made from structural quality steel meeting the minimum mechanical properties and mill galvanized in accordance with ASTM A653 SS, Grade 33, coating designation G90. Covers for all steel trays will also be. The choice of the galvanized tray will make or break the project. The inspector of the site will reject the shipment in case the coating is too thin or the type of steel used is inappropriate.