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

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

  • 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/㎡
  • 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

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

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

 

Aluminum Zinc alloy Coating  Aluzinc Coated Steel in Coil  making Wall Cladding and roofing sheets 1