Color-coated Galvanized Steel Coil (PPGI coil), also known as pre-painted galvanized steel, is made of hot-dipped galvanized steel with organic paint applied by rollers, which is the preferred metal material for construction, home appliances, agriculture, and other applications, meanwhile, Wanzhi Group also provides color coated steel sheet, roofing, corrugated, pipe, strip and other solutions.

Color-coated Galvanized Steel Coil Composition
Color-coated galvanized steel coil consists of a substrate (cold-rolled steel), a galvanized layer, a chemical conversion layer, a primer, and a topcoat. It is a composite material with a multilayered organic coating, combining the advantages of steel, zinc, and functional paint, and can maintain a service life of 10–30 years in indoor, industrial, and industrial applications.

Structures
- Substrate: Q195-Q345/SGCC/SGCD1/DX51D, DX52D
- Coating: Hot-dip galvanized steel containing 100% pure zinc, with a coating thickness of 30-350g/㎡.
- Coating: Epoxy resin, polyester, silicon-modified polyester, polyvinylidene fluoride, high weathering polyester, etc.


Process
- Hot dip galvanizing: Cold rolled steel is immersed in a zinc solution at 450-460°C. The hot dip galvanizing process creates a chemical reaction on the surface of the steel to form a homogeneous zinc layer.
- Roller application of organic coating: After chromate/chrome-free passivation, the hot-dip galvanized steel is roller-coated with primer and topcoat.
- Baking and curing: 220-250℃ high-temperature baking, so that the coating and galvanized steel are tightly combined.
- Quality inspection: Film thickness meter to measure the uniformity of the coating → Appearance quality → Physical property test → Corrosion resistance test → Color difference inspection
Color-coated Galvanized Steel Coil Specifications
Wanzhi Group offers Color-coated Galvanized Steel Coil (PPGI coil) in various substrates, thicknesses, widths, coatings, colors, prints, and packaging by national standards such as ASTM/EN/JIS/GB for architectural and industrial applications.
Grades | DX51/52/53/54D+Z, S280GD+Z, S350GD+Z, S550GD+Z, SECC, etc. |
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Colors | Top/Back:RAL,Painted steel,3D Painted steel, etc(can be customized) |
Thickness | 0.12-1.5 mm |
Width | 600-1250mm/ customized |
Coil Weight | 3-6 tons/ customized |
Substrate Type | Hot dip galvanized, Galvalume, Zinc alloy, Cold rolled steel, Aluminum-zinc plated steel,Zimalium |
Zinc Coating Thickness | Z30-275g/ ㎡,AZ30-150g/ ㎡ |
Introduction to Coating | PVDF、HDP、SMP、PE |
Coating Thickness | Top :10-40 um,Back:5-20 um |
Inside diameter | 508/610mm |
Package | Standard export package or as per your requirements |
Certificates | SGS, ISO 9001,CE |
Date of Delivery | 5-45 days |
Color-coated Galvanized Steel Coil Advantages


Color-coated Galvanized Steel Coil Application
Polyester, fluorocarbon, polyurethane, high-weathering polyester, and other organic coatings are roll-coated onto galvanized steel surfaces and cured by heating to form a color coated and galvanized coated with excellent corrosion resistance, UV resistance, weathering resistance, aesthetics, and durability. It is used in a wide range of applications in the building, construction, appliance, and household appliance industries, transportation, advertising, and industrial production.

Use
- Roofing, wall panels, curtain walls, floor slabs
- Prefabricated modular houses
- Roller shutters, door and window frames
- Ventilation ducts, drains
- Refrigerators, air conditioners, washing machine housings
- Wagon interiors, logistics containers
- Grain silos, greenhouse structures
- Fences, guardrails
- Billboards, Writing boards
Solutions
- General environment (inland): polyester (PE) PPGI material, cost-effective.
- Highly corrosive environment (coastal): Fluorocarbon (PVDF) PPGI material, salt spray resistance.
- High temperature scenario: Silicon Modified Polyester (SMP) PPGI material, high temperature resistant.
Project Case
So far, Wanzhi’s PPGI color-coated steel coil and sheet has been exported to more than 100 countries such as Turkmenistan, Georgia, Uzbekistan, Indonesia, Russia, Turkey, Spain, Chile, Philippines, Malaysia, Saudi Arabia, UAE and so on, and plays an important role in construction and industrial production projects.
110 tons of PPGI and PPGL in Colombia
3000 Tonnes of PPGI Coil to Libya
280 Tons of PPGI Coils Shipped to Georgia
Color-coated Galvanized Steel Coil Price
Color-coated Galvanized Steel Coil price includes raw material (cold rolled steel, zinc, paint) and production cost, Wanzhi Group has raw material inventory and a flexible supply chain, which can reduce the price of PPGI products from the production cost, in addition, if it is a bulk purchase order, the cost of production can also be reduced, the price is more competitive. In addition, the production cost can be reduced for bulk purchase orders, which makes the price more competitive. Currently, the Wanzhi PPGI coil price is in the range of 550-900 USD per ton, the price will be changed if you choose different features of the paint. Leave a message and tell us your requirements, get a free quote now! WhatsApp: +8618774957423/Email: info@wanzhigalvanized.com.

Color-coated Galvanized Steel Coil Factory
When choosing Color-coated Steel Coil factories and suppliers, prefer ISO 9001 certified manufacturers (e.g. Wanzhi Group), you can judge the quality of the products by asking for test reports (salt spray test, adhesion), of course, it is better to visit the factory on-site.
Production Lines
Wanzhi Group has 3 PPGI steel production lines in Binzhou City, Shandong Province, China, our factory name is Shandong Wanzhi Steel, and the factory is certified by ISO9001, ISO14001, and so on.

Supplier
As a professional coated steel supplier, we provide GI steel (coil and sheet), GL steel (coil and sheet), PPGI PPGL PPAL, stainless steel, and other products to customers from all over the world. Our factory also receives customers from more than 40 countries such as the Philippines, Turkmenistan, Malaysia, Indonesia, Chile, Saudi Arabia, UAE, Bolivia, and so on.

Service
Wanzhi Group provides one-stop service from solution customization, production, quality control, and deep processing (slitting, bending, punching, forming, profiling, punching, cutting, etc.), products include: PPGI coil, PPGI sheets, PPGI panels, PPGI roofing, PPGI tube, PPGI board, PPGI strips, etc. strips, etc.

Color-coated GI Coil and Color-coated GL Coil
Product | Color-coated Galvanized Steel Coil | Color-coated Galvalume Steel Coil |
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Abbreviation | PPGI | PPGL |
Properties | Carbon Steel | Carbon Steel |
Category | Color-coated steel | Color-coated steel |
Substrate | Galvanized | Aluminum and zinc |
Appearance | Similar | Similar |
Application | General environment | High temperature, high heat environment |
Cost | Medium | High |
Color-coated galvanized steel coil has become the preferred material for construction and manufacturing industries due to its balance of corrosion resistance, durability, aesthetics, and economy. Contact us to find out more about our case studies and solutions!