Which material finishes are available for the 41x82mm strut channel in corrosive environments?

The 41x82mm back-to-back strut channel is available in pre-galvanized, hot-dip galvanized, and stainless steel finishes to suit varying environmental conditions. Pre-galvanized steel, conforming to EN 10162, provides economical corrosion protection for indoor electrical and mechanical installations. Hot-dip galvanized steel offers a thicker zinc coating suitable for outdoor service and moderately corrosive industrial atmospheres. Stainless steel grades are specified for highly corrosive environments such as chemical plants, wastewater treatment facilities, and coastal installations where chloride-induced corrosion resistance is critical. The selection of finish should be based on the ISO 9223 atmospheric corrosivity category of the installation site, ensuring long-term structural integrity and compliance with the service life requirements of IEC 61537.