1.Prepainted Zincalum Steel Sheet Roll Introduction
It is also known as the pre-painted galvanized steel coil, color steel coil etc, typically with a hot dip
zinc coated steel substrate. Prepaint galvanized steel coil refers to factory pre-painted zinc coated
steel, where the steel is painted before forming. Prepaint galvanized steel coil is used galvanized
steel or the galvalume steel as the base materials, after surface pretreatment, such as chemical
degreasing and conversion treatment, next passed to be painted and baked, then we get the final
products.
2. Prepainted Zincalum Steel Sheet Roll Quality Control
Strict procurement process---skillful technical workers---final products inspection
(resistance to corrosion, salt spray test, exposure test, machinability, thermal resistance)
---standard packing
3. Prepainted Zincalum Steel Sheet Roll Main Usage
Prepaint galvanized steel coil is often used as building materials(ceiling,metal roof tile)machinery parts(electrically controlled cabinets, road maintain board, etc, so it is mainly used in
Advertising industry, construction, household appliances industry, electrical industry, furniture
industry and transportation.
4. Prepainted Zincalum Steel Sheet Roll Process:
Stitching the strip to the previous coil -- Cleaning the strip -- Power brushing -- Pre-treating with
chemicals -- Drying the strip -- Applying primer on one or both sides -- Curing (often only 15 to 60
seconds! ) -- Cooling the strip -- Top coating on one or both sides -- Second curing -- Cooling down
to room temperature -- Rewinding of the coated coil
| Base Material |
Hot dip galvanized steel sheet(HDG) |
| Hot dip AL-ZINC coated steel sheet(55% AL-ZN) |
| Zinc-iron-alloy steel sheet( ZF) |
| Coating mass |
Zinc:60-275gm2 AL-ZN:60-220gm2 |
| Thickness |
0.12-1.5mm |
| Tolerance of thickness |
-0.03-+0.01mm |
| Width |
600-1250mm |
| ID |
610mm,508mm |
| Quality Standard |
EN10142,EN10326,EN10169,JIS3302,ASTMA755M,GB/T12754 |
| Steel Grades |
DX51D,DX52D,DX53D,S220GD,S250GD,SGCC |
| Type of coating |
PE,PVDF,HDP,SMP |
Coating structure
(Top surface/bottom surface) |
2/2 (Double coated/ double coated) |
| 2/1 ( Double coated/ single coated) |
| (Top Paint Layer) |
10-25μm |
| (Back Paint Layer) |
7-12μm |
| Primer Coating |
Epoxy primer |
| Top Coating |
PE,PVDF,SMP,HDP |
| Glossiness |
35-65 ±5° |
| Weight of coil |
1-8T, usually 3 - 5 T |
| Package Method |
(Vertical packing) ( Horizontal packing) |
Audited Supplier 
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