GI Corrugated Steel Sheet

Our GI Corrugated Steel Sheet is a high-strength building material engineered from premium galvanized steel. By cold-rolling the steel into a precise wavy profile, we transform a flat sheet into a high-load-bearing structural component that offers unmatched drainage and durability.

Superior Load Capacity: The corrugated profile significantly increases the rigidity of the steel, allowing for longer spans between supports.
Rapid Drainage Design: Engineered to move water and snow quickly away from the structure, preventing leaks and moisture buildup.
Galvanized Shield: Coated with a dense layer of zinc to provide sacrificial protection against oxidation and red rust.
Lightweight Efficiency: Easy to handle and install, reducing the overall weight load on the building's frame and foundation.

Size:	0.11-0.6mm
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Product Description

Strength in Every Wave

When you look at a skyline of industrial warehouses or rural agricultural structures, you are seeing the rhythmic pattern of the corrugated steel sheet—a design that has stood the test of time for over a century. Our GI Corrugated Steel Sheet isn't just a piece of metal; it is a meticulously calculated shield for your investment. When you run your hand over the smooth, zinc-coated waves, you feel the cold, solid assurance of a material that won't buckle under heavy snow or rattle loose in high winds. The classic silvery spangles catch the light, reflecting solar heat to keep interiors cooler and more comfortable.

Imagine a tropical storm hitting your facility. While flat panels might struggle with water pooling, our corrugated sheets act as a series of high-speed channels, directing torrential rain away with a clear, resonant sound that signals a secure roof. There is a sense of heritage in this material; it’s the spiritual successor to the iron sheets that built modern infrastructure, now refined with advanced metallurgy to last even longer. By choosing our GI Corrugated Sheets, you aren't just buying roofing; you are investing in the peace of mind that comes from knowing your assets are protected by a structural geometry that turns thin steel into an immovable barrier.

Technical Specifications

We provide precision-manufactured sheets that meet rigorous international building codes, ensuring compatibility with global construction standards.

Standard	AISI, ASTM, BS, DIN, GB, JIS,CGCD1
Material	SGCC,SGCH,G550,DX51D,DX52D,DX53D
Thickness	0.1—0.8mm
Width	Before Corrugated:762-1250mm After corrugated:600-1100mm
Length	1-4m(customized)
Coating	Z20-275g/m2
Normal Shape	Wave, Trapezoid, Tile, etc.
Spangle	regular spangle,minimal spangle, zero spangle,big spangle
Package	standard export package

Key Features and Highlights: Built for the Elements

The corrugated profile is a masterpiece of engineering, providing functional benefits that go far beyond aesthetics.

Advanced Structural Rigidity: The "hills and valleys" of the corrugation act as continuous beams. This increases the sheet's bending strength, allowing you to use thinner gauges while maintaining high resistance to wind uplift and physical impact.
High-Performance Corrosion Defense: Every square inch of the sheet is hot-dip galvanized. Even if the surface is scratched during installation, the surrounding zinc sacrificial layer creates a chemical "halo" that prevents rust from creeping into the core steel.
Thermal Regulation: The metallic surface reflects a significant portion of the sun's infrared radiation. In large-scale roofing applications, this thermal reflectivity translates into lower energy bills and a reduced carbon footprint for the building's operation.
Seamless Overlapping & Seal: Designed for precision nesting. The waves fit together perfectly, creating a tight seal at the joints. When combined with our EPDM-washer fasteners, it creates a 100% waterproof envelope for any structure.

Content Dimensions: Installation and Performance

Based on industry standards, we focus on the practical dimensions that ensure a successful project lifecycle.

Ease of Installation: Because the material is lightweight compared to clay tiles or concrete, it requires less heavy machinery on-site. Two workers can easily handle and position a standard 3-meter sheet, drastically cutting down labor hours.
Fire and Weather Resistance: Non-combustible and rated for high fire safety. It is also impervious to rot, termites, and fungal growth, which are common killers of traditional wood or asphalt roofing materials.
Profile Versatility: Whether you need the traditional look of Sine Wave (Circular) for a farmhouse or the modern, sharp lines of Trapezoidal (Box) profile for an industrial complex, we provide the exact geometry required for your aesthetic and structural goals.
Sustainability: Steel is the most recycled material on the planet. At the end of its 30-year lifespan, these sheets can be fully recycled into new steel products, making it a cornerstone of circular construction.

Strategic Industry Applications

Our GI Corrugated Sheets are the backbone of global development, serving diverse sectors with high-reliability cladding.

Industrial Warehousing: The preferred choice for large-scale factory roofs and side cladding due to its cost-efficiency and rapid installation over steel purlins.
Agricultural Buildings: Provides long-term protection for grain silos, barns, and poultry houses, where ventilation and moisture management are critical.
Infrastructure & Temporary Housing: Essential for modular housing, site offices, and disaster relief shelters where speed, durability, and transportability are paramount.
Residential Fencing and Siding: Increasingly used in modern architecture for a "raw industrial" look that requires zero maintenance compared to wood or vinyl fencing.

FAQ: Frequently Asked Questions

How do I calculate how many sheets I need?
You must account for the "effective width." For example, a 1000mm wide sheet may have an effective coverage of 840mm after the mandatory overlap. Our team can provide a precise layout calculation based on your roof dimensions.
Will the zinc coating peel off over time?
No. In our hot-dip process, the zinc forms a metallurgical bond with the steel, creating several alloy layers that are part of the metal itself, not just a surface paint.
Can these sheets be used in coastal environments?
For projects within 5km of the ocean, we recommend a higher zinc coating (Z275) or a pre-painted (PPGI) version with a PVDF coating for enhanced salt-spray resistance.
Is it noisy when it rains?
While metal roofing has a distinct sound during heavy rain, proper insulation and tight fastening significantly dampen the noise, often making it no louder than other roofing types.
What is the difference between GI and CGI?
GI stands for Galvanized Iron (or Steel), which refers to the material. CGI stands for Corrugated Galvanized Iron, which refers to the finished wavy sheet profile.