galvalume steel coil for roofing sheets

1.galvalume steel coil 2.size:0.23-1.2*900-1250 3.zinc coating:50-150gsm 4.standard:JIS ASTM A792 Detailed Product Description Name: galvalume steel coil for roofingStandard: JIS G3302 /national standard/ enterprise standardGrade: DC51D+AZ, ASTM A792 etc.Surface treatment: chromated. Oiled, bright finish, fingerprint resistanceThickness: 0.23mm-1.2mmWidth: 800mm-1,250mmCoating weight: 50-150gCoil weight: as per customers' requestsID: 508mmApplications: general use, construction industry, household appliance industry, automobile industry and industrial instrumentsPackage: fancy package or as per customers' requestsPlace of production: ChinaProduct properties: according to the weight rate, the coating layer of the hot-dipped galvalume steel plate consists of 55% aluminum, 43.4% zinc and 1.6% silicon. The distinctive features of the hot-dipped galvalume steel plate lie in its excellent properties of erosion resistance and damp heat resistance; the erosion resistance of the hot-dipped galvalume steel plate is 2-6 times higher than that of the ordinary hot-dipped galvanized steel plate. The damp heat resistance of hot-dipped galvalume steel plate is more than 3 times higher than that of the ordinary one. Meanwhile, as well tried, the hot-dipped galvalume steel plate has the high temperature erosion resistance property. The hot-dipped galvalume steel plate will not fade after being oxidized for a week (168 hours) at a high temperature of 315°C. Even at a temperature as high as 700°C, the hot-dipped galvalume steel plate can still be free from severe oxidization and scale formation while the highest working temperature for the ordinary galvanized steel plate is only 230°C. Besides, the hot-dipped galvalume steel plate has good cold-roll forming performance, stationarity, weldability and painting viscosity. What's more, because of its handsome appearance, the steel plate can be put into application without being painted    

galvalume steel coil for roofing sheets