... resistant propertylong lifeUsage:It is widely used in steel warehouse purlin,wall beam, house shelf, bracket. ... :Corrosion-resistantHeat-resistanceHot-dipped galvanized al-zn steel can be used in high temperature enviroments ... of Al-zn galvanized steel:Constructions: Roof,wall,garage,soundproof,pipe and modular housing etc.Automobile: Muffler ... exchanger,dryer,calorifier etc. Z-Shaped Steel Structure