Pre- Galvanized steel is zinc coated by a hot dip process. Steel strip from a coil is fed through a continuous zinc coater which cleans, fluxes and coats the steel with molten zinc. After cooling, the steel is recoiled. This coating is offered on Unistrut channel and accessories and is well-proven, time- tested performer for indoor and outdoor applications. For servere corrison applications, Hot Dipped Galvanised is recommended Unistrut channel is a support system manufactured from steel, which is also referred to as Strut, is available in Plain Oil, Hot Dipped Galvanised (HDG), Pre Galvanised and Stainless Steel with different options for thickness; 21mm, 41mm, 62mm, 82mm and larger if required. Length options as standard are 3 or 6 metre (or smaller with our cutting service).