10F, Building B, Erqi Center, Erqi District,
Zhengzhou City,
Henan Province, China
Joy:+86 13164350935
(WhatsApp/Wechat)
10F, Building B, Erqi Center, Erqi District,
Zhengzhou City,
Henan Province, China
Joy:+86 13164350935
(WhatsApp/Wechat)
Prepainted galvanized steel coil (PPGI coil) is one of our main products. Wanzhi Steel is a leading prepainted galvanized steel coil manufacturer in China. Our factory is in Shandong Province, which has three color coating lines, with an annual output of 320,000 tons. Except for PPGI coil, we also offer PPGL steel, color-coated aluminum coil, color-coated stainless steel in coil, sheet, plate, and strip. Welcome to contact us for more details!
PPGI Color Coating Line
No.2 & No.3 Color Coating Lines
Below is a table showing the main specifications of PPGI coil.
| Item | PPGI Coil |
| Substrate | Galvanized steel |
| Thickness | 0.15 mm-1.2 mm |
| Width | 600 mm-1,250 mm |
| Stock Width | 914mm, 1,200mm, 1,219mm, 1,250 mm, etc. |
| Coil Weight | 3-8 tons (can be customized) |
| Painting Types | PE, SMP, HDP, PVDF |
| Painting Thickness | Top: 11-35 μm Back: 5-14 μm |
| Zinc Coating Thickness | 15-275 g/㎡ |
| Colors | As per RAL Color (custom patterns are available) |
| Package | Standard export package or as per your requirements |
Here is a video showing one of our color coating lines at Wanzhi PPGI steel factory. Welcome to visit our factory on-site or by video chat.
As an experienced prepainted steel coil manufacturer, Wanzhi Steel offers a wide range of color coated steel products with different base metals, finishes, paints, colors, etc. For example, we have prepainted galvanized steel coil (PPGI), prepainted galvalume steel coil (PPGL), etc. Also, we have matte and glossy surfaces to choose from, as well as embossed steel coils. Besides, you can choose different colors according to the RAL color card. We will also custom pattern printed steel coils. In addition, we also provide painted steel whiteboards and color coated steel for home appliances. Below are some pictures of our products.
RAL3005 Embossed PPGI Coil
Glossy PPGI Coil
Matte PPGI Coil
Wood Grain Steel Coil
Prepainted galvanized steel sheet is made of electro-galvanized and hot-dip galvanized steel as substrates. After pretreatment (degreasing and chemical treatment), one or more layers of coatings are continuously applied to the surface of the base metal by coil coating and then baked. It includes base metal (cold rolled steel), zinc coating, chemical conversion coating, primer coating, and top coating.
PPGI Steel Structure
Top Paint: The top paint can form a dense film to reduce water permeability and oxygen permeability. The topcoat is able to block sunlight and prevent ultraviolet rays from damaging the coating;
Primer Paint: The primer often uses PE paint, which has better adhesion. So the top paint is not easy to desorb after water penetration to improve its corrosion resistance.
Zinc Coating: The zinc coating has a great influence on the service life of PPGI steel. The thicker the zinc coating, the better the corrosion resistance.
Substrate: Generally, it is a cold-rolled sheet with different strengths, which determines the mechanical properties of the color-coated sheet.
Back Paint: It aims to prevent the steel from corroding from the inside. If bonding is required on the back side, a single-layer back paint is recommended.
The coatings used include polyester (PE), silicon-modified polyester (SMP), high-durability polyester (HDP), polyvinylidene fluoride (PVDF), etc. They are widely used in construction, transportation, home appliances, solar energy, and furniture. and other industries. Prepainted steel for home appliances is mainly used as the side panels of refrigerators, DVD casings, air conditioners, freezers, and washing machine casings.
Pre-painted Galvanized Coil
Back Painting
1. Construction Industry
Color-coated steel is commonly used in the construction industry, especially roofing panels, wall cladding, fence panels, window frames, ceiling keel frames, rolling doors or ceilings, etc.
2. Automotive Industry
PPGI sheets are mainly used as body shells, chassis, door panels, trunk lids, fuel tanks, fenders, etc.
3. Home Appliance Industry
Prepainted steel sheets are widely used in the home appliance industry, such as the door and side panels of the refrigerator or the body of some freezers, DVD casings, washing machine casings, etc.
4. Medical Industry
Pre-painted galvanized sheets are used as the surface materials of composite panels. Because of their dust-proof, anti-static, and anti-bacterial effects, they are widely used in medicine, electronics, pharmaceuticals, food, biology, aerospace, instrument manufacturing, scientific research, etc.
Fence Panel
Container Houses in Qatar
With 3 color coating lines, Wanzhi Steel is able to produce various color-coated steel products, such as color-coated aluminum coils, PPGI, PPGL, whiteboards, etc. The thickness available is from 0.15 to 1.2mm. The width ranges from 600 to 1,250mm, and the coating thickness is up to 45 microns. We also provide customization service of color-coated sheets according to your use purpose, application environment, service life, your budget, etc. Welcome to contact us for more details!
