DX51D PPGI Prepainted Galvanized Steel Coil up to 1500mm Width for Container Plate and Roofing Applications

DX51D PPGI Prepainted Galvanized Steel Coil up to 1500mm Width for Container Plate and Roofing Applications

1. Product Overview

PPGI (Prepainted Galvanized Steel Coil) is produced by applying organic coatings onto a hot dipped galvanized steel substrate. The galvanized base layer provides corrosion resistance, while the paint coating enhances durability, appearance, and weather resistance.

This specification supports widths up to 1500 mm, making it suitable for container plate production, wide roofing panels, and large-format cladding systems. It is widely used where both structural performance and surface finish are required.

2. Technical Solution

The performance of PPGI coil is based on a dual protection system:

• Galvanized steel substrate with 20–275 g/m² zinc coating
• Organic paint coating providing surface sealing and weather resistance
• Primer + topcoat structure ensuring adhesion and coating stability
• Back coating to protect the reverse side during service
• CGCC / DX51D grades supporting forming and fabrication

For container plate and roofing applications, the zinc coating provides base corrosion protection, while the paint system determines weathering resistance, color retention, and coating durability.

3. Specifications

4. Application

• Container plate and container panel manufacturing
• Roofing sheets for industrial buildings and warehouses
• Wall cladding and façade panels
• Home appliance outer panels
• Transportation and structural sheet applications

5. Processing

• Cut-to-length sheet production
• Slitting into narrow strips
• Roll forming into roofing and cladding profiles
• Bending, folding, and stamping
• Protective film application when required
• Custom cutting according to customer specifications

6. Advantages

• Width up to 1500 mm supports wide panel production and container plate use
• Zinc coating range (20–275 g/m²) allows flexible corrosion protection selection
• Standard paint system ensures stable coating adhesion and durability
• Compatible with roll forming, bending, and fabrication processes
• RAL color customization supports architectural and industrial applications
• LFQ quality improves forming performance for complex profiles

7. How to Choose

• General roofing and cladding → Polyester coating is commonly used
• Higher durability requirement → SMP coating is recommended
• Outdoor long-term exposure → PVDF coating is preferred
• Higher corrosion resistance → select higher zinc coating (≥ Z180)
• Wide panel or container application → choose 1000–1500 mm width
• Complex forming → select LFQ material

8. FAQ

Q1: Is this product PPGI or PPGL?
This specification is PPGI, based on a galvanized (zinc-coated) substrate rather than aluminum-zinc coating.

Q2: Can 1500 mm width be supplied?
Yes. This product supports wide-width coils up to 1500 mm, suitable for container plates and large panels.

Q3: What is the difference between paint thickness systems?
The coating includes primer and topcoat layers. The total thickness affects durability, adhesion, and weather resistance.

Q4: Can it be used for roofing sheet production?
Yes. It is widely used for roll forming into roofing and wall cladding profiles.

Q5: What does LFQ mean?
LFQ (Lock Forming Quality) indicates improved formability for bending, profiling, and fabrication processes.