Galvalume Steel Coil -Gl

• Type: Steel Coil
• Standard: ASTM, AISI, GB, JIS, DIN, BS
• Certification: ISO, RoHS, IBR
• Surface Treatment: Coated
• Technique: Hot Rolled
• Application: Ship Plate
• Model NO.: GL
• Special Use: Wear Resistant Steel
• Stock: Stock
• Transport Package: Sea Wotehy Packing
• Specification: 0.15-2.0mm
• Trademark: Dingang
• Origin: China
• HS Code: 72106100
• Production Capacity: 100000 Tons/Year

Product Description

Galvalume Steel Coil

Production Introduction
Galvalume 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.
 
Specification
 

Brand Name	Dingang
Standard	ASTM A653,JIS G3302,GB/T3830-2006
Grade	SGLCC,SGLCD,SGLCDD,SGLC400~SGLC570,DC51D+AZ~DC54D+AZ
Thickness	0.18-2.5mm
Width	600-1250mm(Usual:914mm,1219mm,1220mm,1250mm)
Base Metal	Cold-Rolled Steel
Al-Zinc Coating	30-150gsm(both sides)
Coil Internal Diameter	508mm/610mm
Coil Outer Diameter	As Per Customers' Requirements(Max 1880mm)
Surface Treatment	Chromate Passivated,Non-Chromate Passivated,Oiled,Anti-Finger Print And Etc.
Tolerance	Thickness:+/-0.05mm,Width:+5/-2mm,Total Quantity:+/-10%,Alu-Zinc Coating:+/-10%
Surface Finish	Regular Spangle,Skin Passed Spangle,Minimized Spangle
Delivery Details	Within 25 Days After Receive The Advance Payment
Packing	Standard 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.