PPGI калеми обложени со челик галвалум калем

In building roof projects, the weather resistance and decorative properties of materials directly affect the life and appearance quality of the project. As a benchmark enterprise in China's metal sheet industry, Yintu Steel has been deeply engaged in pre-coated galvanized technology for 20 years and launched Prepainted Galvanized Steel Coil for roofs. With the dual protection system of "galvanized base + intelligent coating", it provides a one-stop solution for industrial plants, commercial complexes, public buildings, etc. that combines corrosion resistance, weather resistance and beauty.

1. Core advantages of pre-coated galvanized steel coils for roofing

For the special needs of roofing systems, our products have four core competitive advantages:

Dual anti-corrosion system

Hot-dip galvanized layer: 85-150g/m² galvanized layer (ASTM A653), salt spray test over 2000 hours

Pre-coating: 20-25μm polyester (PE) / fluorocarbon (PVDF) topcoat, UV absorption rate > 98%

Intelligent mechanical design

Yield strength 245-350MPa (corresponding to DX51D-DX53D)

Elongation ≥ 22%, suitable for complex roof arc processing

Environmentally friendly production process

Chromium-free passivation technology, in line with EU RoHS and REACH standards

Pre-coating process reduces on-site spraying pollution and improves construction efficiency by 50%

Long-term color management

Japan Kansai paint color fastness reaches level 7 (ISO 105-B02)

10-year color guarantee commitment (normal environment)

2. Yintu Three major technological breakthroughs in the steel industry

Nano-ceramic reinforcement technology

Adding Al₂O₃ nanoparticles to the coating increases the hardness to 3H and the scratch resistance by 60%

Gradient functional coating

Sandwich structure of epoxy resin primer + intermediate transition layer + topcoat, adhesion level 0 (ASTM D3359)

Humidity compensation system

German online film thickness control system, achieving ±1.5μm precision control

III. Typical application scenarios

Industrial buildings: acid-resistant roofs of chemical plants, clean roofs of food factories, and insulation roofs of cold storage

Commercial buildings: skylights of shopping centers, characteristic roofs of hotels

Public facilities: airport terminals, canopies of high-speed railway stations, curved roofs of gymnasiums

Agricultural fields: greenhouses, ventilation roofs of breeding bases

IV. Full-process service system

Customized service

Thickness 0.3-1.2mm, width 600-1250mm, full specifications optional

Supports customization of 210 colors of RAL color cards

Quality assurance

Each roll of product comes with: galvanized layer test report + Coating thickness report + salt spray test report

ISO 9001, ISO 14001, SGS triple certification