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 0. 55 mils) per. us-trations without notice. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. , 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. This standard specifies the local thicknessand mean coating massbased primarily on the steel thickness. Therefore, the local zinc thickness should be no less than 45µm. All tests per NEMA VE-1. 0mm thickness to maximum width of 300mm. Published load safety factor is 1. Splice plates not supplied with straight. This Galvanized Steel Sheet is obtained by immersing a soft steel sheet in a zinc bath, a stable iron-zinc alloy is formed with a predominance of pure zinc on surface.