Reliable PPGI Steel Coil Supplier For Roofing Manufacturer
Stable Quality | Custom & RAL Colors | No Paint Cracking | OEM Service
Expert Experience over 25 Years & 50 Countries
PPGI Steel Coil Supplier For Your Industry
We are a professional steel coil manufacturer specializing in: Galvanized Steel Coil · Galvalume Steel Coil · PPGI · PPGL · Roofing Sheet
Choose the Right Steel Coil for Your Application
We supply galvanized, galvalume and prepainted steel coils for roofing manufacturers, sandwich panel producers, steel distributors and construction projects, with customized specifications, colors and coating options.
Why Choose Witop
With over 25 years of manufacturing experience, we serve steel distributors, roofing sheet manufacturers, and construction project buyers worldwide.
Our focus is simple:
- Stable product specifications
- Real coating weight control
- Consistent batch quality
- Reliable production & shipment schedule
PPGI Steel Coil Supplier & Quality Assurance
02
Coating Inspection
- Good forming performance without cracking
- Color consistency & coating adhesion control
- Steel designed for smooth profiling production
For factories producing corrugated & trapezoidal roofing sheets.
01
Raw Material Inspection
- Check Thickness, width and Grade
- Stable batch quality for long-term inventory
03
Paint Adhesion Test
- ASTM / EN / JIS compliance
- Controlled lead time & inspection support
For buyers under delivery and compliance pressure.
05
Packging Inspection
- Check waterproof and moisture-proof packaging materials
- Verify steel sheet protection, edge guards, and inner/outer wrapping
- Inspect coil straps and fixing strength
- Ensure packaging meets container and bulk vessel shipping requirements
- Reduce risks of rust, surface damage, and transportation deformation
04
Salt Spray Inspection
- Evaluate corrosion resistance of coating systems
- Verify paint adhesion and surface protection performance
- Reduce rust risks during transportation and long-term use
- Ensure stable quality for global construction projects
06
Loading Supervision
- Verify product quantity, specifications, and loading sequence
- Check coil placement and weight distribution inside containers
- Inspect straps, supports, and fixing methods
- Confirm waterproof and moisture protection measures
- Take loading photos and records for shipment traceability
Our Project and Export Market
Global Export Experience
Serving Global Customers Across Africa, South America, the Middle East and Asia
Our Export Markets
- Africa: Nigeria, Kenya, Ethiopia, South Africa, Ghana, Tanzania, etc.
- South America: Chile, Peru, Colombia, Venezuela
- Middle East: UAE, Saudi Arabia, Qatar
- Asia: Sri Lanka, Malaysia, Singapore, Philippines, Indonesia, Vietnam, India
Need PPGI steel coil for your local market? We can provide customized color, thickness, width, coating and packaging solutions based on your application and destination requirements.
FAQ
Yes, We can do 0T bending test or depend on your requirement.
We can produce order base on RAL Color Number or your samples colors.
Normaly, the delivery time is about 20-35 days after get the deposite.
TT and Irrevocable LC at Sight
Latest Products
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