Competitive price Galvalume Steel Coil/gi Steel Coil
Steel grade: DX51D+SGCC DX51D Q195 Galvanized steel coil/gi sheet/Galvalume Steel Coil
SGCC DX51D SGCH Galvanized steel coil gi sheetinc coverage: 30-180 g/sqm on both sides (depending by the requested specification)
Thickness: 0, 12 mm - 1, 5mm
Width: 600/762/820/914/1000/1200/1219/1220/1250mm
Coil weight: 3-8 mt
Coil ID: 508 mm/610mm
Coil OD: 900-1500 mm
Zinc coating: Z 60g/m2-275g/m2 Az30-180g/m2
Galvanized steel coils and Galvalume Steel Coil are widely used in the construction industry, as raw material for the production of corrugated panels, fencing products, drywall panel profiles, ventilation systems etc. Recommended for both outside and inside usage, galvanized steel has a high resistance to corrosion in different environments, due to a protective layer of zinc of 100 180 grams per square metre.
Hot dip galvanized steel coils are produced by immersing steel in a zinc bath. An appropriate galvanizing process requires a pretreatment process during which the steel passes through different baths which prepare the surface for zinc coating. In this stage, chemicals are used to clean the surface of the steel. After the chemical treatment, the steel coils pass through a bath of melted zinc at temperatures around 460 ° C. The resulting uniform coating is finished through a process of skin-passing to provide smooth and shiny appearance of the finished product. To store for a longer period, the hot-dip galvanized coils can be delivered with a final oil coating, according to the customer's demand.
| Hot Dip Galvanized Steel Sheet Grade |
Chemical Composition % |
Mechanic Property |
| C |
Si |
Mn |
S |
P |
T.S |
Y.S |
E.L |
| x103 |
x103 |
x102 |
x103 |
x103 |
Mpa |
Mpa |
% |
| JIS G3302 SGCC |
12 |
30 |
41 |
31 |
21 |
480 |
300 |
13 |
| JIS G3302 SGCH |
12 |
10 |
21 |
18 |
8 |
680 |
650 |
|
| ASTM A653 CS.B |
20 |
30 |
60 |
35 |
30 |
386 |
205~380 |
20 |
| EN 10346 DX51D+Z |
29 |
21 |
18 |
1.8 |
11 |
355 |
245 |
38 |
| G550 |
20 |
6 |
73 |
5 |
17 |
715 |
654 |
8 |
Thickness tolerance of galvanized Steel Sheet
| Nominal Width (MM) |
Galvanized Steel Sheet Nominal Thickness (MM) |
| >0.25 ≤0.4 |
>0.4 ≤0.6 |
>0.6 ≤0.8 |
>0.8 ≤1.0 |
>1.0 ≤1.2 |
>1.2 ≤1.6 |
>1.6 ≤2.0 |
>2.0 ≤2.5 |
>2.5 ≤3.0 |
| >600 ≤1200 |
±0.03 |
±0.04 |
±0.05 |
±0.06 |
±0.07 |
±0.08 |
±0.09 |
±0.11 |
±0.12 |
| >1200 ≤1500 |
±0.04 |
±0.05 |
±0.06 |
±0.07 |
±0.08 |
±0.09 |
±0.10 |
±0.12 |
±0.13 |
| >1500 ≤1800 |
__ |
±0.06 |
±0.07 |
±0.08 |
±0.09 |
±0.10 |
±0.12 |
±0.13 |
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