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Product Name: Galvalume Steel Coil -Gl Model NO.: GL Stock: Stock Special Use: Wear Resistant Steel Application: Ship Plate Technique: Hot Rolled Surface Treatment: Coated Certification: ISO, SGS, BV, RoHS, IBR Standard: ASTM, AISI, GB, JIS, DIN, BS Type: Steel Coil Trademark: Dingang Transport Package: Sea Wotehy Packing Specification: 0.15-2.0mm Origin: China HS Code: 72106100 Product Description Galvalume Steel CoilProduction IntroductionGalvalume steel is the plating coat of aluminum-zinc alloy armor plate,and its composition is 55% Al,43.3% Zn and 1.6% Si.The plate with smooth surface and excellent corrosion resistance of the atmosphere,which is 2 to 6 times higher than hot-dip galvanized sheet of the same thickness of coating.After through three processes,including payoff reel,crop shear and welding,enter into the continuous annealing furnace.During the annealing process,strips are heated closer to the recrystallizing temperature,and then heated to 20~50 above the recrystallizing temperature in the reducing furnace.After keeping the same temperature for 170s,strips are naturally cooled to the normal temperature in the slow cooling process.Afterward,strips enter into the ZN-AL pot through the elephant's trunk and begin in the hot-dip coating process.The optimum temperature range of the plating coat is 630-660ºC.Coated with aluminum-zinc alloy,strips enter into the cooling tower by the steady roll and air knife.After fast cooled with wind or water,they are directly produced into Al-Zn armor plates.The general rate of cooling 30/s or so,and strips are cooled to about 60.SpecificationBrand NameDingangStandardASTM A653,JIS G3302,GB/T3830-2006GradeSGLCC,SGLCD,SGLCDD,SGLC400~SGLC570,DC51D+AZ~DC54D+AZThickness0.18-2.5mmWidth600-1250mm(Usual:914mm,1219mm,1220mm,1250mm)base metalCold-Rolled SteelAl-Zinc Coating30-150gsm(both sides)Coil Internal Diameter508mm/610mmCoil Outer DiameterAs Per Customers' Requirements(Max 1880mm)Surface TreatmentChromate Passivated,Non-Chromate Passivated,Oiled,Anti-Finger Print And Etc.ToleranceThickness:+/-0.05mm,Width:+5/-2mm,Total Quantity:+/-10%,Alu-Zinc Coating:+/-10%Surface FinishRegular Spangle,Skin Passed Spangle,Minimized SpangleDelivery DetailsWithin 25 Days After Receive The Advance PaymentPackingStandard Seaworthy Export Packing:3 Layers Packing.Inside is Kraft Paper,Water Plastic Film Is In The Middle And Outside Gi Steel Sheet To Be Covered By Steel Strips With Lock.
