Do fire cable trays need to be hot-dip galvanized
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. Detail of hot-dip galvanized steel cable trays installed in a demanding industrial environment.
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