PPGI

PPGI Global Specification &Technical Datasheet

1. Product Overview

Pre-Painted Galvanized Steel (PPGI) and Pre-Painted Galvalume Steel (PPGL) are high-performance coated steel products manufactured via cold-rolled substrate pretreatment (degreasing, phosphating), hot-dip coating (zinc for PPGI; 55%Al-Zn-Si alloy for PPGL), and multi-layer painting/curing. They offer superior corrosion resistance, aesthetics, and processability for global applications in construction, home appliances, and transportation.

2. Core Technical Specifications (Global Baseline)

3. Regional Specification Adaptations

Tailored parameters for key global markets based on local standards, climate, and application needs:

3.1 North America (USA, Canada)

3.2 Europe (Germany, UK, France)

3.3 Southeast Asia (Indonesia, Malaysia)

3.4 South Asia (India, Bangladesh)

3.5 Africa (South Africa, Kenya)

4. Product Model Nomenclature (Global Unified)

Example : PPGI-DX51D+Z-T0.5×W1250-AZ80-PE-RAL5015

• PPGI: Product Type
• DX51D+Z: Substrate Grade
• T0.5×W1250: Thickness (0.5mm) ×Width (1250mm)
• Z80: Zinc Coating (80g/㎡)
• PE: Paint Type
• RAL5015: Color Code (Sky Blue)

5. Quality Assurance &Certifications

• Global Standards Compliance: GB/T 12754, ASTM A653/A755, JIS G3312, EN 10169
• Third-Party Certifications: ISO 9001, SGS, BV, TÜV, RoHS

To craft a globally recognized product introduction, I’ll integrate industry-standard terminology, detail raw material composition and manufacturing processes, and clearly outline specifications and certification standards aligned with major international markets. This ensures resonance with overseas buyers.

PPGI : Premium Prepainted Steel Solutions

Crafted for Global Performance by a 20-Year Metal Manufacturing Specialist

For two decades, we have mastered the art of producing high-performance Pre-Painted Galvanized Steel (PPGI) and Pre-Painted Galvalume Steel (PPGL) —two iconic coated steel products trusted by industries worldwide. Blending advanced metallurgy with precision coating technology, our PPGI/PPGL delivers unrivaled durability, aesthetic versatility, and compliance with the strictest global standards. Below is a comprehensive overview of their composition, production, specifications, and certifications.

1. Raw Material Composition: The Foundation of Performance

The core distinction between PPGI and PPGL lies in their metallic coating composition, which defines their environmental resilience and application scope .

1.1 PPGI (Pre-Painted Galvanized Steel)

• Base Substrate: Cold-rolled steel (grades: DX51D+Z, SGCC, Q235, Q345) or electro-galvanized steel, selected for inherent strength and formability .
• Metallic Coating: Pure zinc (Zn) layer, applied via hot-dip galvanization. Coating weight ranges from 30g/㎡ (Z30) to 275g/㎡ (Z275) to suit corrosion demands .
• Paint System: 2-coat 2-bake structure:

• • Primer (5-10μm): Epoxy-based for adhesion and chemical resistance.
  • Topcoat (10-35μm): Polyester (PE), Silicone-Modified Polyester (SMP), or High-Durability Polyester (HDP) .

1.2 PPGL (Pre-Painted Galvalume Steel)

• Base Substrate: Cold-rolled steel (grades: DX51D+AZ, CGCC-AZ, S350) with enhanced compatibility for alloy coatings .
• Metallic Coating: 55% aluminum (Al) + 43.4% zinc (Zn) + 1.6% silicon (Si) alloy. Coating weight spans 30g/㎡ (AZ30) to 150g/㎡ (AZ150), forming a dense oxide film for superior protection .
• Paint System: Optimized for alloy substrates:

• • Primer (5-10μm): Anti-alkaline formula to prevent galvanic corrosion.
  • Topcoat (15-40μm): PVDF (Kynar 500®) recommended for extreme weather, plus PE/SMP/HDP options.

2. Manufacturing Process: Precision from Start to Finish

Our 6-step production ensures consistent quality, adhering to global manufacturing best practices :

1.Substrate Preparation: Uncoiling and stitching cold-rolled steel coils; feeding into entry loops for continuous processing.

2.Cleaning &Pretreatment: Degreasing to remove oil/dust, followed by phosphating to create a micro-rough surface for paint adhesion —critical for preventing coating peeling .

3.Metallic Coating:

PPGI: Hot-dip galvanization (zinc bath at 450°C).

1.Paint Application: Roll-coating primer and topcoat uniformly using automated machines, ensuring color consistency across batches .

2.Curing &Cooling: Passing through ovens (200-250°C) to harden coatings, then water cooling to lock in performance .

3.Quality Inspection &Packaging: 100% testing (thickness, adhesion, salt spray resistance); coiling (ID: 508/610mm) and packaging with VCI film + kraft paper + ISPM 15 pallets .

3. Global Specifications: Tailored to Regional Standards

We engineer PPGI/PPGL to meet the unique requirements of key markets, aligned with local standards and climate needs .

3.1 Core Global Specifications (Baseline)3 –9 tons

3.2 Regional Standard Adaptations

4. Certification &Quality Assurance

Our PPGI/PPGL meets global quality and sustainability benchmarks, ensuring trust across markets :

4.1 International Certifications

• Quality: ISO 9001, SGS, BV, TÜV.
• Safety: CE (Europe), ASTM Compliance (North America), JIS Certification (Japan).
• Environmental: RoHS, REACH (heavy metal restrictions), GB 30981 (low-VOC coatings).
• Sustainability: Aluminum Stewardship Initiative (ASI) for PPGL .

4.2 Performance Guarantees

• Corrosion Resistance: 500+ hours Neutral Salt Spray (PPGI), 1000+ hours (PPGL) .