Aluminum Zinc alloy Coating Aluzinc Coated Steel in Coil making Wall Cladding and roofing sheets

Place of Origin China
Brand Name Dingang
Certification MTC
Model Number Aluzinc steel
Minimum Order Quantity 25 Tons
Price USD930/Ton
Packaging Details Standard seaworthy packing with wooden pallet
Delivery Time 20-30 workdays
Payment Terms L/C, T/T
Supply Ability 300000 tons per year
Product Details
Product Name Zinc Aluminum Alloy Coated Steel G550 Standard ASTM,JIS,GB
Width 600-1500mm Surface Treatment Oiled, Anti-finger Print
Thickness 0.18-2.5mm Zinc Coating AZ50--150g/㎡
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Product Description

Aluminum Zinc alloy Coating Aluzinc Coated Steel in Coil making Wall Cladding and roofing sheets

 

Profile


The plating coat of Aluminium-Zinc Alloy Armor plate is Zn-Al alloy, and its composition is 55% Al, 43.3% Zn and 1.6% Si. The plate is of 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 plating coat. 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 20~50º C 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 zinc pot through the elephant's trunk and begin in the hot-dip coating process. The optimum temperature range of the plating coat is 630º C~660º C. Coated with aluminium-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 is 30º C/s or so, and strips are cooled to about 60º C.

Specifciation


1. Production Grade: SGCC, DX51D, Q195
2. Thickness: 0.18-1.5mm
3. Width: 914mm, 1000mm, 1200mm, 1250mm mainly
4. Coating Type: 55%Al, 43.5%Zn and 1.5%Si
5. Coating Thickness (both side, g/sqm): 50-150
6. Surface Finish: Regular Spangle, Small Spangle
7. Surface Treatment: Oring or Anti-finger print
8. Inside diameters: 508mm
Outside diameters: As per customers' requirements

 

Chemical Requirements for structure steel
Composition, %-Heat Analysis Element, maximum, unless otherwise Shown
Designation C Mn P S Cu Ni Cr Mo V Cb TiA NB
G230 0.20 1.35 0.04 0.04 0.25 0.20 0.15 0.06 0.008 0.008 0.025 ^
G255 0.20 1.35 0.10 0.04 0.25 0.20 0.15 0.06 0.008 0.008 0.025 ^
G275 0.25 1.35 0.10 0.04 0.25 0.20 0.15 0.06 0.008 0.008 0.025 ^
G340 0.25 1.35 0.20 0.04 0.25 0.20 0.15 0.06 0.008 0.008 0.025 ^
G550 0.20 1.35 0.04 0.04 0.25 0.20 0.15 0.06 0.008 0.015 0.025 ^

 

Production line:

 

Aluminum Zinc alloy Coating  Aluzinc Coated Steel in Coil  making Wall Cladding and roofing sheets 0

 

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