Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of Color Coated Steel Coil Manufacturer | PPGI & PPGL Coil Supplier | RAL Color Prepainted Steel Coil in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
What Is Color Coated Steel Coil?

Color Coated Steel Coil is a pre-painted steel product manufactured by applying multiple protective paint layers onto galvanized steel (GI) or galvalume steel (GL) substrates through a continuous coil coating process. The combination of metallic coating and organic paint layers provides excellent corrosion resistance, weather durability, decorative appearance, and long service life. PPGI uses zinc-coated steel as the base metal, while PPGL uses aluminum-zinc coated steel, offering enhanced corrosion resistance in coastal and industrial environments.
Xi'an Dongmeng Group Co., Ltd supplies industrial-grade color coated steel coils for roofing manufacturers, sandwich panel factories, appliance producers, construction contractors, and steel distributors worldwide.
Specifications
| Commodity | Prime Quality PPGI Steel Coil |
| Grade | Q195, Q235 |
| SGCC, SGCH,SGC340 SGC400 SGC440 SGC490 SGC570 | |
| SGHC SGH340 SGH400 SGH440 SGH490 SGH540 | |
| DX51D DX52D DX53D DX54D | |
| S220GD S250GD S280GD S320GD S350GD S400GD S500GD S550GD | |
| Availble Forms | Coil, Sheet, Strips, etc. |
| Standard | GBT12754-2006 Q/BQB440 JISG3312 EN10169-2010 ASTM A755 |
| Surface Type | Wooden, Stone, High Glossy, Film, Wrinkled, Embossed, Camouflage, Printing, White Board |
| Paint | PE, SMP, HDP, PVDF |
| Hardness | Softy, Half Hard and Hard Quality |
| Thickness | 0.12-5.0 mm |
| Width | 90-1500 mm |
| Supply Ability | 40000 MT/Month |
| Coil Weight | 3-8 MT/Coil or as Your Requirment |
| MOQ | 5 MT |
| Packaging | Export Standard Seaworthy Packaging |
| ID | 508mm or 610mm |
| Technical Parameters | Color Coating: Maximum 30um/25um (Top Side/Back Side ) |
| T Bend: 0T 1T 2T 3T | |
| Glossy: High, Medium, Low | |
| Impact: 9J 12J | |
| Pencil Hardness: 3H | |
| MEK: 100 times | |
| Salt Spray Test: 5000 hours | |
| UV Test: 3500 Hours | |
| Related Product We Can Provide | Hot Dipped Galvanized Steel Coil |
| Hot Dipped Galvalume Steel Coil | |
| PPGI Prepainted Galvanized Steel Coil | |
| PPGL Prepainted Galvalume Steel Coil | |
| Roofing Sheet | |
| Corrugate Steel Sheet | |
| Trade Term | FOB, CFR, CIF |
| Payment Terms | T/T, L/C at sight, West Union, D/P, D/A, Paypal |
| Delivery Time | 10-20 Days After Confirmed Order |
| Loading Port | Tianjin, Qingdao and Shanghai Port |
| Container Size | 20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High) | |
| 40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High) |
Substrate Comparison
| Item | PPGI | PPGL |
|---|---|---|
| Base Metal | Galvanized Steel | Galvalume Steel |
| Metallic Coating | Zinc | 55% Al + Zn |
| Corrosion Resistance | Excellent | Superior |
| Heat Resistance | Good | Better |
| Coastal Environment | Suitable | Recommended |
| Service Life | 10-20 Years | 15-30 Years |
| Cost | Lower | Higher |
PPGL generally provides longer service life in aggressive environments due to its aluminum-zinc coating system.
Paint System Selection Guide
PE (Polyester)
Most economical
Good weather resistance
Suitable for residential roofing
Service Life: 8–12 Years
SMP (Silicone Modified Polyester)
Enhanced UV resistance
Improved durability
Industrial buildings
Service Life: 10–15 Years
HDP (High Durability Polyester)
Excellent weather resistance
High color retention
Commercial projects
Service Life: 15–20 Years
PVDF (Polyvinylidene Fluoride)
Premium architectural coating
Outstanding UV resistance
Coastal environments
Service Life: 20–30 Years


Production of Color Coated Steel Coil
Color coated galvanized steel coil are mainly used as raw materials for such products. Hot-rolled and cold-rolled coils can be painted without a metal coating; however, in this case, the resistance of the product to atmospheric corrosion is low.
The key steps in the production of pre-painted coils include:
Pay off the coil
Pre-cleaned surfaces
Leveling strip
Treating and Deoiling with Chemicals
Primed
Curing/drying primer in oven
Apply decorative paint
Curing/Drying Paint Coatings in the Oven
Cooling strip
Control product quality
Apply a protective film to prevent mechanical damage to the color coating
Color-coated steel coil
Slitting into narrow strips and strips and cross-cutting into sheets
Corrosion Resistance Analysis
Color coated steel combines:
Metallic protection layer
Primer coating
Top coating
Back coating
Edge protection
This multi-layer protection system significantly improves resistance to:
Salt spray
Acid rain
Industrial pollution
UV radiation
Humidity exposure
PPGL systems generally provide superior corrosion resistance compared with traditional galvanized steel.
Processing Performance
Excellent Roll Forming
Bending Performance
Punching Capability
Deep Drawing Capability
Laser Cutting Compatibility
High Adhesion Coating
No Paint Peeling During Fabrication
Application Industries
Construction Industry
Metal Roofing Sheets
Wall Cladding
Steel Buildings
Warehouses
Shopping Centers
Airport Terminals
01
Sandwich Panel Industry
PU Panels
PIR Panels
EPS Panels
Rock Wool Panels
Cold Room Panels
02
Home Appliance Industry
Refrigerators
Washing Machines
Air Conditioners
Microwave Ovens
Water Heaters
03
Solar Energy Projects
PV Mounting Systems
Solar Roofing Structures
Photovoltaic Buildings
04
✔ 20+ Years Manufacturing Experience
✔ Factory Direct Pricing
✔ Custom RAL Color Development
✔ PE / SMP / HDP / PVDF Solutions
✔ Fast Delivery
✔ Strict Quality Control
✔ Third-Party Inspection Support
✔ OEM & Private Label Service
✔ Global Export Experience
✔ Professional Technical Team
Supply PPGI Coil, PPGL Coil, Prepainted Galvanized Steel Coil, and Color Coated Roofing Materials Worldwide.
Send Your Thickness, Width, Color, and Quantity Requirements Today for a Fast Quotation.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734

FAQ
What is the difference between PPGI and PPGL?
PPGI uses galvanized steel substrate, while PPGL uses aluminum-zinc coated steel substrate and provides higher corrosion resistance.
Which coating is best for coastal environments?
PVDF-coated PPGL is generally recommended for coastal and marine applications.
What colors are available?
Any RAL color can be customized according to project requirements.
Can you provide custom widths?
Yes. Customized widths from 600mm to 1250mm are available.
What is your MOQ?
Typically 25 tons, but trial orders are accepted.
Can you provide EN10204 3.1 certificates?
Yes, MTC and third-party inspection reports are available.
How long is the service life?
Depending on coating system and environment, service life can range from 10 to 30 years.
Do you provide OEM service?
Yes. OEM branding, custom packaging, and private label services are supported.
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