Holu Color Steel Roofing Sheets for Durable & Aesthetic Building Solutions
Material Composition & Structure
Our color steel sheets consist of multiple protective layers:
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Base Metal |
High-quality galvanized steel (GI) or aluminum-zinc alloy coated steel (GL) |
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Chemical Treatment Layer |
Chromate conversion coating for enhanced adhesion |
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Primer |
Epoxy-based undercoat for corrosion protection |
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Top Coat |
PVDF (70%+) or PE/Polyester finish for color retention |
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Back Coat |
Protective paint on the underside (optional) |
Standard Specifications
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Thickness |
0.3mm-1.2mm (customizable) |
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Width |
600mm-1250mm (standard), up to 1500mm (special order) |
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Length |
Custom-cut up to 12 meters |
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Surface Profile |
Over 20 options including trapezoidal, corrugated, and standing seam |
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Color Options |
200+ RAL colors with matte/gloss finishes |
Key Advantages
Superior Durability
25-30 year service life with PVDF coating
Salt spray resistance >1000 hours (ASTM B117)
Withstands wind speeds up to 220km/h
Weather Resistance
Excellent UV resistance (ΔE<5 after 10 years)
Temperature range: -50°C to +120°C
100% waterproof when properly installed
Economic Benefits
40% lighter than traditional roofing materials
Quick installation saves labor costs
Low maintenance requirements
Aesthetic Flexibility
Color stability guaranteed for 10+ years
Modern architectural appearance
Custom patterns/textures available
Applications
Industrial buildings (factories, warehouses)
Commercial complexes (malls, airports)
Residential roofing & siding
Agricultural structures (barns, greenhouses)
Temporary buildings & modular construction
Installation & Maintenance
Compatible with screw-down or concealed clip systems
Recommended slope: ≥5° for proper drainage
Cleaning requires only periodic water rinsing
Annual inspection recommended for sealant integrity
Quality Assurance
ISO 9001, ASTM A755, EN 10169 certified
Color difference control: ΔE≤1.0 (standard)
Coating thickness: 20-25μm minimum
10-year warranty on coating performance
Why Choose Our Color Steel Sheets?
Our products undergo 27 quality control checkpoints from raw material to finished goods. With advanced German coating lines and Japanese steel base materials, we guarantee:
Precise color matching for project consistency
Optimal formability for complex architectural designs
Technical support for installation best practices
Conclusion
Whether for functional industrial roofing or stylish architectural cladding, our color steel sheets provide the perfect balance of performance and design flexibility. Backed by comprehensive warranties and global project experience, they represent the smart choice for durable, cost-effective building envelopes.
Frequently Asked Question
Before cooperation, you may have the following questions.
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Are you original manufacturer or trading company?
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Is your price competitive compared with other companies?
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Can you send engineers or whole team to install my project?
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Do you accept container loading inspection?
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What’s your work flow?
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Can you provide architectural and structural design drawings?
Company Advantages
Steel structure manufacturer
Honglu, a steel structure top manufacturer with daily capacity 15,000+Tons, Effectively Shorten Construction Period And Saving Construction Costs For You.
efficient production
10 Production Sites, 400+ Production Lines, Annual Production Capacity Of Steel Structure 5,000,000+ Tons, Slabs 30,000,000㎡.
High quality service
Experiencing 21 Years, Serving 100,000+ Customers,Take The Lead In Passing ISO9001, ISO14001, OHSAS18001,Certification of European& American Standards.
Rich product chain
Rich Product Chains, One-Stop Service For Steel Structure Projects.
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CERTIFICATIONS
we look forward to helping you!
In the past 22 years, Honglu Steel Structure has won various honors, which is the recognition of our work by customers and society!
