Product Description
Production name: Galvalume steel coil or Aluminium-Zinc Alloy Coated Steel Coil or hot-dip galvalume steel coil.
The feature of galvalume steel coil as follows:
1. Base steel grade of galvalume steel coil: SPCC according to the ASTM, JIS, OR EN STANDARD
2. Both sheet and coil are available
3. Both soft and hard are available
4. Available Thickness of galvalume steel coil: 0.20-2.5MM
5. Available Width of galvalume steel coil: 914/1000/1219/1200/1250mm/1220mm special width can be available, for examples200 mm, 300 mm, 400 mm, 500mm, 600mm
6. Coating of galvalume steel coil: AZ80-AZ150
7. The material of surface: 55%Al, 43.5%Zn, 1.5%Si
8. Spangle: Regular spangle
9. Coil ID: 508mm
10. Coil Weight: MAX 5-8MT
11. Surface Treatment: Chromated, Light Oiled and anti-fanged
12. Packing: Seaworthy, in container, The package is mill's standard export packing, including water-proof paper, steel can and steel angle protector.
Galvalume steel coil is a new kind of steel product, it is of good corrosion resistance which is similar to stainless steel, but the price is much cheaper than stainless steel.
Aluminium-zinc alloy armor plate, is called Al-Zn coated plate for short Strips, 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.
Product Parameters
| 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 |
^ |
Detailed Photos
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