TOP 10 PPGL Sheet Manufacturers in Indonesia
December 18, 2025
PPGI PPGL Prepainted Steel
Prepainted Steel
Prepainted steel, including prepainted steel coil and sheet, refers to steel sheets or coils coated with durable organic paint systems on one or both sides before fabrication. This coating improves the steel’s resistance to corrosion and weather, and enhances its appearance, making it popular in industries such as construction, appliance manufacturing, automotive, furniture, and signage.
Zhaojian Steel is an ISO 9001 certified prepainted steel coil manufacturer. We can provide customizable color options, surface textures, and thicknesses to suit different application needs.
- Anti-corrosion coatings (PE, SMP, HDP, PVDF)
- Custom RAL colors & textures
- Width: 600–1250 mm | Thickness: 0.2–1.2 mm
- 15–25 day delivery, OEM/ODM accepted
Why Choose Our Prepainted Steel?
Zhaojian provides complete processing services including slitting, shearing, cut-to-length, and surface finishing for coated steel products. We also offer OEM color customization and RAL color matching for brand-specific projects.
High Strength & Corrision Resistance
Wide Color and Finish Options
Secure Packaging & Damage Prevention
Large Stock & Fast Delivery
Prepainted Steel Specification
| Item | Specification Range / Options |
|---|---|
| Base Metal Type | Galvanized Steel (GI), Galvalume Steel (GL), Cold Rolled Steel (CRS) |
| Standard Grades | ASTM A653, ASTM A792, JIS G3312, EN 10169, GB/T 12754 |
| Coating Types | PE (Polyester), SMP (Silicone Modified Polyester), PVDF (Polyvinylidene Fluoride), HDP (High Durability Polyester) |
| Coating Thickness | Top Coat: 10–35 μm; Back Coat: 5–15 μm |
| Sheet Thickness | 0.12 mm – 1.5 mm |
| Sheet Width | 600 mm – 1500 mm |
| Coil Weight | 3 – 8 tons per coil |
| Surface Finish | Glossy, Matte, Wrinkle, Embossed, Printed (wood grain, marble, etc.) |
| Color Options | RAL Colors and Customized Colors |
| Corrosion Resistance | AZ Coating Weight: 40–275 g/m² (for GI/GL) |
| Edge Condition | Mill Edge, Slit Edge |
| Formability | Suitable for bending, roll forming, stamping |
| Packaging | Standard export packaging with protective film and strapped coils |
| MOQ | Typically 1 MT; sample sheets and small batch orders available |
| Certifications | ISO 9001, SGS, BV, CE (upon request) |
For detailed technical specifications, coating thickness, substrate grades, and relevant EN/ASTM standards, visit our Prepainted Steel Specifications & Standards page for complete datasheets.
Quality Certification
All Prepainted steel are produced under ISO 9001 quality management with full inspection records.
Zhaojian pre-painted steel meets ASTM A755 and EN 10169 standards.
Prepainted steel Applications
Construction Industry: Roofing sheets, wall cladding panels, sandwich panels, ceilings, and facade systems for commercial, industrial, and residential buildings.
Appliances: Outer casings of household electrical devices.
Automotive Sector: Body panels, interior trims, and structural components benefit from being lightweight and resistant to corrosion.
Furniture and Storage: Office furniture, cabinets, shelving, and storage units made of coated steel for durability and appearance.
Signage and Advertising: Billboards, signboards, and display panels where vibrant colors and weather resistance are crucial.
Agricultural and Greenhouse Structures: Sturdy panels and frames that endure outdoor weather while creating suitable environments for plant growth.
Transportation Containers: Containers and trailers that need corrosion protection and attractive finishes.
More Details About Zhaojian Steel Products
Key Features
Custom Colors
Coatings offer excellent UV and corrosion protection, ideal for outdoor and varied environments.
Strong Weather Resistanc
Precision rolling guarantees stable dimensions for accurate construction installation.
High-Quality Coating Proces
Multi-layer paint ensures even coverage with vibrant, long-lasting colors.
Prepainted Steel Manufacturing Process
- Base Steel Preparation: Clean galvanized or galvalume steel coils to remove impurities.
- Chemical Pretreatment: Apply conversion coating to enhance paint adhesion and corrosion resistance.
- Primer Coating: Apply a primer layer for better bonding and protection.
- Topcoat Application: Coat with organic paint (PE, SMP, PVDF, etc.) in chosen color.
- Curing: Heat the coated steel to cure the paint layers.
- Cooling and Inspection: Cool down and check coating quality and color consistency.
- Back Coating: Apply protective coating on the back side.
- Slitting and Recoiling: Cut to size and rewind into coils for shipment.
Color Options
JH Red
JH Blue
JH-9016 White
JH-7035 Light Gray
JH-1001 Beige
JH-1013 Pearl White
JH-6029 Green
JH-5010 Blue
JH-2008 Orange
JH-3003 Red
JH-9001 Cream White
JH-1015 Light Ivory
JH-1014 Ivory
JH-7032 Pebble Gray
JH-7030 Stone Gray
JH-7038 Agate Gray
JH-7040 Window Gray
JH-7015 Slate Gray
JH-7024 Graphite Gray
JH-7045 Telegrey 1
JH-7047 Telegrey 4
JH-6027 Light Green
JH-6005 Moss Green
JH-6002 Leaf Green
JH-6009 Fir Green
JH-5008 Gray Blue
JH-5011 Steel Blue
JH-5012 Light Blue
JH-5003 Sapphire Blue
JH-5013 Cobalt Blue
JH-2004 Orange
JH-1023 Traffic Yellow
JH-3020 Red
JH-3004 Purple Red
JH-3011 Brown Red
JH-8017 Chocolate Brown
JH-8011 Nut Brown
JH-8022 Black Brown
JH-9005 Jet Black
Processing & Services
Some prepainted steel products meet fire-resistance standards like ASTM E84 or EN 13501, depending on the coating system.a
Yes, especially PVDF and SMP coatings offer excellent UV resistance. PE coatings are more economical but less resistant in outdoor environments.
Depending on environmental conditions and coating thickness, galvanized steel bars can last 20 years or more, with some lasting up to 50 years in optimal conditions.
The key difference between PPGI & PPGL lies in the base metal coating.
PPGI (Prepainted Galvanized Steel Coil) uses a zinc-coated steel substrate.
PPGL (Prepainted Galvalume Steel Coil) uses an aluminum-zinc alloy substrate (Al–Zn).
PPGL generally provides better corrosion resistance and longer service life, especially in harsh or coastal environments, while PPGI offers more color options, easier formability, and lower cost.
In short, PPGL is ideal for severe weather and humid climates, whereas PPGI is preferred for general construction, appliances, and interior use.
The price of prepainted steel (PPGI or PPGL) depends on several layered factors:
Raw steel base price (galvanized or galvalume substrate)
Paint type and coating thickness (PE, SMP, PVDF, etc.)
Coating color and surface finish quality
Thickness, width, coil weight, and order quantity
Market demand and delivery lead time
PPGL usually costs slightly more than PPGI due to its aluminum-zinc coating and higher corrosion resistance.
Value-added options—such as anti-fingerprint, anti-UV, or eco-certified coatings—can also affect the final price.
SMP prepainted steel refers to Silicon-Modified Polyester coating, a high-performance paint system combining strong UV resistance, color retention, and durability.
It’s widely used for roofing sheets, exterior wall panels, and industrial buildings that require long-term protection against sunlight and corrosion.
Compared with regular polyester (PE) coatings, SMP coatings offer superior weathering performance and gloss retention.
Prepainted stainless steel is a decorative material combining stainless steel’s corrosion resistance with a colored or protective coating.
It’s commonly used in building façades, interior panels, and household appliances.
Compared with standard coated steel, it offers better aesthetics and durability, though it is more expensive and requires strict quality control to ensure coating adhesion on the stainless substrate.
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