Customized RAL Coated Steel Roofing Sheet with Industrial Grade
RAL Color coated steel roofing sheet are produced with PE coating for construction projects. Witop provides reliable bulk supply.
Durable Color Coating System๏ผEnhanced Corrosion Protection๏ผ Attractive Aesthetic Appearance๏ผReady-to-Install Structure๏ผ Stable Bulk Supply & Export Support
Color Coated Steel Roofing Sheet Technical Sheet
| RAL Color Coated Steel Roofing Sheet | |
| Standard | JIS G3302,EN10147,ASTM A653M |
| Grade | SGCC,ย SGCH |
| DX51D,ย DX52D | |
| S280GDย S320GDย S350GD | |
| Type | Wave-Shape and Trapezoid-Shape |
| Zincย Coating | 40-275G/M2 |
| Spangleย Model | Zeroย Spangle,ย Smallย Spangle,Regularย Spangle,ย Bigย Spangle |
| Thickness | 0.13-0.8MM |
| Width before Corrugated (BC) | 750MM,762MM, 900MM, 914MM, 1000MM,ย 1200MM |
| Width after Corrugated (AC) | 665MM, 680MM, 800MM, 840MM, 850MM, 870MM, 875MM, 900MM,ย 1100MM |
| Bundleย Weight | 3-4MT/Bundleย orย Customized |
| Package | Standard Seaworthyย Exportingย Package |
| MOQ | 25MT |
| Capacity | 5000MT/Month |
| Transportย Type | Vessel Container, Vessel Bulk, Railway Container, Railway Wagon |
| Loadingย Port | Tianjin,ย Qingdao, Ningbo, Shanghai and other port |
| Deliveryย Time | 20-25ย Daysย afterย receiving the deposit |
| Terms of Trade | EXW,FOB,ย CFR,ย CIF |
| Terms of Payment | TT and Irrevocable LC at Sight |
RAL Color Coated Steel Roofing Sheet Description
RAL Color Coated Steel Roofing Sheet Description introduces prepainted metal panels engineered for durable roofing and exterior cladding systems. As a professional manufacturer and bulk supplier, we provide PE, SMP and PVDF coated sheets with thickness from 0.13โ0.8mm and customizable lengths for different building projects.
Compared with color coated roofing sheets offer enhanced aesthetics and long-term color stability. Widely used by contractors, distributors and construction companies, our painted steel roofing panels help reduce maintenance costs and ensure reliable supply for residential and industrial applications.
Color Coated Steel Roofing Sheet Applications
Residential Housing Roofing
Color coated steel roofing sheets are widely used for villas, residential houses and low-rise buildings where aesthetic appearance and long-term color stability are required.
Commercial Building Facades
Suitable for shopping centers, offices and retail buildings where exterior color coordination and architectural design are important.
Prefabricated & Modular Structures
Ideal for prefabricated houses and site offices that require lightweight materials with attractive finishes and quick installation.
Industrial Roofing with Branding Colors
Used in factories and warehouses where corporate color matching enhances brand visibility while maintaining corrosion protection.
Sandwich Panel Outer Skins
Applied as the outer layer of insulated sandwich panels, combining structural durability with decorative surface finish.
Agricultural & Community Buildings
Suitable for schools, community centers and agricultural buildings where cost control and visual appeal are both considered.
Steel Roofing Sheet Process Flow Chart
1. Uncoiler
2. Feeding Table
3. Roll Froming System
4. Safety Fence
5. Post-Cutting
6. Finished Product Output Supporter
Standard export package
Covered with a layer of inside anti-water craft paper, middle PVC plastic film and outside 0.45mm thick steel sheet, packed on the iron pallets, bound with iron belt strip.
WITOP steel can pack steel roofing sheet based on customerโs requirement.
FAQ โ Color Coated Steel Roofing Sheet
RAL Color coated steel roofing sheet is a roofing material made from pre-painted steel coils (PPGI or PPGL) that are roll-formed into roofing profiles. The steel surface is coated with paint layers to improve corrosion resistance, durability, and appearance.
Color coated roofing sheets are widely used in industrial buildings and warehouses, residential houses, commercial buildings, agricultural buildings, prefabricated houses, steel structure buildings, and wall cladding systems. They are a staple in modern roofing and building envelope systems.
PPGI roofing sheets use galvanized steel as the base and are highly cost-effective. PPGL roofing sheets use Galvalume steel, which provides better corrosion resistance. Generally, PPGL roofing sheets offer a longer service life in harsh environments.
Typical thickness ranges include:
0.12 โ 0.18 mm: Lightweight roofing
0.20 โ 0.30 mm: Standard roofing
0.35 โ 0.50 mm: Industrial roofing
0.50 โ 0.80 mm: Heavy-duty roofing panels
Thickness selection depends on the roof span and specific building structure.
Common paint systems include:
-
Polyester (PE): Most common and cost-effective.
-
SMP: Features improved weather resistance.
-
HDP: Offers higher durability.
-
PVDF: Provides excellent UV and corrosion resistance, often used for high-end architectural projects.
Color coated roofing sheets are available in a wide range of RAL standard colors, such as RAL 3003 (Red), RAL 5015 (Blue), RAL 6005 (Green), RAL 7016 (Dark grey), and RAL 9002 (Grey white). Custom colors can also be produced based on project requirements.
Common profiles include corrugated roofing sheets, trapezoidal roofing sheets, IBR roofing sheets, and tile profile roofing sheets. Different profiles offer varying load capacities and aesthetic styles.
Key advantages include excellent corrosion resistance, attractive appearance, and a lightweight profile. They are also easy to install, offer a long service life, and have low maintenance costs, making them ideal for industrial and commercial systems.
Typical service life depends on the coating type:
PE coating: 10โ15 years
SMP coating: 15โ20 years
PVDF coating: 20โ30 years
Proper installation and maintenance can further extend the service life.
Common sheet widths and their effective coverage include:
914 mm coil width: ~760โ820 mm effective width
1000 mm coil width: ~840โ900 mm effective width
1200 mm coil width: ~1000โ1050 mm effective width
Actual effective width depends on the specific roofing sheet profile design.
Major buyers include roofing sheet manufacturers, construction contractors, building material distributors, prefabricated building manufacturers, steel structure companies, and agricultural building suppliers. Bulk orders typically range from 20 to 200 tons.
Common international standards include ASTM A755, ASTM A792, EN 10169, JIS G3322, and GB/T 12754. These standards define critical parameters such as paint thickness, coating weight, and mechanical properties.
Yes, color coated sheets may gradually fade due to UV exposure and weather conditions. High-performance coatings such as PVDF or SMP provide significantly better color retention compared to standard PE coatings.
Standard export packaging includes waterproof paper protection, plastic film covering, steel strapping, and wooden pallets or bundles. Proper packaging is essential to prevent moisture damage and surface scratches during shipping.
