PPGL Steel Coil Aluminum Zinc Alloy Coated Steel For Corrugated Metal Roofing

Product Specification

Introduction of PPGL Steel Coil:

What is Prepainted Galvalume (PPGL)?

PPGL refers to **Galvalume steel sheets** that are coated with paint or a protective polymer layer **before** being formed into final products (like roofing, panels, or appliances).

Key Components:
1. Galvalume (Base Material):
- A type of steel coated with a zinc-aluminum alloy (typically 55% aluminum, 43.4% zinc, and 1.6% silicon).
- Known for superior corrosion resistance compared to regular galvanized steel.

2. Prepainted Coating:
- A factory-applied layer of paint or polymer (e.g., polyester, PVDF) on the Galvalume surface.
- Applied using a continuous coil-coating process for uniformity and durability.

3.Why Use PPGL?
- Corrosion Resistance: Galvalume’s zinc-aluminum coating protects against rust, while the paint layer adds an extra barrier.
- Aesthetic Appeal: Available in various colors and finishes for architectural or decorative uses.
- Durability: Resists UV rays, scratches, and weathering, making it ideal for outdoor applications.

4.How It’s Made:
The steel coil goes through a coil coating process:
1. Cleaning: Removes oils and impurities.
2. Pretreatment: Enhances paint adhesion.
3. Primer + Topcoat: Applied and cured under controlled conditions.

Technical Parameters:

PPGL Advantages:

1. Corrosion Resistance

The aluminum-zinc alloy coating provides excellent protection against corrosion even in highly corrosive environments near coastlines or industrial areas.

2. Durability

When combined with a durable paint finish, PPGL steel sheets can last over 25 years with only nominal maintenance under normal weather conditions.

3. Strength and Support

PPGL steel is strong yet lightweight. It can support heavy loads and withstand high wind loads making it suitable for roofing and cladding applications in commercial buildings.

PPGL Applications:

1. Roofing Systems

PPGL steel is the preferred choice for roofing across industrial plants, commercial complexes, and residential projects. Its superior corrosion resistance and structural durability ensure decades of reliable performance, even in coastal or high-humidity environments. The material's lightweight nature simplifies installation while reducing structural load requirements.

2. Architectural Cladding & Facades

Engineered for lasting beauty, PPGL steel transforms building exteriors with vibrant, fade-resistant finishes. Advanced coating technologies maintain color integrity against UV exposure, making it ideal for modern architectural designs. Customizable textures and gloss levels enable creative freedom for signature buildings.

3. Rainwater Management Systems

Manufacturers rely on PPGL steel for precision-engineered rainwater solutions including:

• - High-capacity gutter systems
• - Durable downpipes
• - Weatherproof flashings

The material's formability allows for seamless designs that prevent leaks and minimize maintenance.

4. Industrial Siding & Partitions

PPGL panels deliver optimal protection for:

• - Warehouse exteriors
• - Factory partitions
• - Logistics centers

Featuring Class A fire ratings and impact resistance, these panels combine safety with low lifecycle costs.

FAQ:

Q1.: How durable is PPGL roofing/cladding sheet?
A1: PPGL sheets last over 20 years with proper installation and mild cleaning. The galvalume coating and premium paint provides long-term corrosion resistance.

Q2.: What type of climates can PPGL sheets be used in?
A2: PPGL is suitable for all 4 seasons and can withstand extreme temperatures, humidity, rainfall etc. making it ideal for most countries/regions.

Q3.: How much weight can PPGL cladding panels hold?
A3.: PPGL sheets have high strength-to-weight ratios. 0.5mm panels can safely hold 35-50kg/sqm static loads under normal conditions.

Q4.: What maintenance is required for PPGL cladding/roofs over time?
A4.: Periodic washing using a soft brush and mild detergent is sufficient to retain the looks of PPGL for decades.