• Zincalume Galvalume Steel Coil (GL) for Roofing
  • Zincalume Galvalume Steel Coil (GL) for Roofing
  • Zincalume Galvalume Steel Coil (GL) for Roofing
  • Zincalume Galvalume Steel Coil (GL) for Roofing
  • Zincalume Galvalume Steel Coil (GL) for Roofing
  • Zincalume Galvalume Steel Coil (GL) for Roofing

Zincalume Galvalume Steel Coil (GL) for Roofing

Standard: ASTM, JIS, GB, AISI, DIN, BS
Certification: ISO
Surface Treatment: Galvalume
Technique: Hot Rolled
Application: Ship Plate
Edge: Slit edge
Customization:

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Basic Info.

Model NO.
SGCC
Stock
Stock
Thickness
0.18-2.5mm
Thickness Tolerance
+/-0.05mm
Alu-Zinc Coating
50-150GSM
Spangle
Normal
Transport Package
Seaworthy Packing Export Standard
Specification
ASTM, GB, JIS
Trademark
Dingang/OEM
Origin
Jiangsu, China(Mainland)
HS Code
72106100
Production Capacity
5000000 Ton/Tons / Year

Product Description

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.

2. 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

Zincalume Galvalume Steel Coil (GL) for Roofing Zincalume Galvalume Steel Coil (GL) for Roofing
Chemical Requiremetns 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 ^

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