U-shaped profile 70x50 L900 4mm US 7 90 FT hot-dip galvanized OBO 6340164 OBO Bettermann

U-shaped profile rails are reinforced elements of cable management structures, the load on which must not exceed 850 kg. They are used for ceiling suspensions, floor mounting, or as structural profiles. The protective zinc coating of FT type profile rails is implemented according to DIN EN ISO 1461 by the hot-dip galvanizing method (coating thickness on one side is at least 60 μm, which is equivalent to 350-420 grams per sq.m of surface). Finished products are immersed in a molten zinc bath, whereby their surface and all joints are covered with a uniform layer of zinc. Parts galvanized in this way have a longer protection period under the same atmospheric conditions, and are also better protected against mild chemical loads, marine and urban air, and other atmospheric phenomena. The FT type protective zinc coating, when used in the C3 zone according to the corrosion category classification according to DIN EN ISO 12944, i.e., in zones with an average zinc consumption from 0.7 to 2.1 μm/year, will effectively resist corrosion for at least 30 years. Load characteristics are determined by the load-bearing capacities of the traverses, connectors, spacers, as well as fasteners (anchor bolts, dowels, etc.) used with them, and the load-bearing characteristics of the supporting structures to which they are attached, but must not exceed 850 kg.