What is Corrugated GI sheet?

Corrugated GI Sheet is a steel sheet with hot-dip galvanized surface and pressed into a corrugated shape (corrugated), which has excellent corrosion resistance and structural strength. Its core material is galvanized steel coil (GI, Galvanized Iron), which is processed into a corrugated shape through cold rolling forming process and is widely used in building roofs, walls, fences and other fields. The corrugated design enhances the rigidity and drainage performance of the sheet, making it an ideal choice for tropical, rainy and high humidity areas.

Galvanized steel profiled sheet

corrugated sheets

Production Video

Key features of corrugated galvanized sheet

• Strong corrosion resistance: The surface is covered with a layer of zinc, which effectively prevents the steel plate from contacting with air and moisture, avoids rust and corrosion, and prolongs its service life.
• High structural strength: The corrugated shape increases the rigidity and bearing capacity of the steel plate, which is more resistant to bending and deformation than flat plates and can withstand greater loads.
• Lightweight and easy to install: Compared with other building materials, galvanized corrugated steel plates are lighter and easier to transport and install. High construction efficiency, saving manpower and time costs.
• Beautiful and practical: The corrugated shape gives the steel plate a unique texture, and the appearance is simple and generous, suitable for modern architectural style.
• Diverse colors: Surface treatment (such as coating, painting) can be performed according to needs, and a variety of color options are available to meet different design needs.
• Low economic cost: The price is relatively low and the cost performance is high. Strong corrosion resistance, low maintenance cost, and low long-term use cost.
• Strong customizability: The thickness, width, length and corrugated shape can be customized according to needs.
• Good weather resistance: Adapt to different climatic conditions, such as high temperature, low temperature, humidity, etc.

inner package

gi corrugated sheet inner package

Application fields

• Construction field: commonly used in the roofs of industrial plants, warehouses, logistics centers, temporary buildings, mobile cabins, construction site dormitories and other buildings, and also as building wall materials.
• Agriculture: used as covering materials for agricultural greenhouses, and also as roof and wall materials for livestock sheds, durable and easy to maintain.
• Fences: enclosure structures for exhibition and event venues. Fences at construction sites, municipal fences, and household enclosures.
• Bridges and tunnels: can be used for the deck or guardrails of small bridges, as lining materials in tunnel projects, as road and railway sound insulation barriers, and can also be used to make drainage pipes.
• Transportation field: can be used to make carriages, car bodies and other parts, used for the roofs and enclosures of bus stops, billboards on high highways, bus stops, and street lights.
• Furniture and decoration: used to make furniture such as lockers and shelves, and can also be used as wall decorations, ceilings, etc.
• Environmental protection projects: used as landfill covering materials for garbage plants and sewage plants to prevent garbage leakage and odor spread.
• Energy field: In solar power generation systems, galvanized corrugated steel sheets can be used to make solar brackets.

Community slide

corrugated galvanized fence

Galvanized corrugated factory roof

Zinc layer

Zinc layer classification

• Low zinc layer: 30-60g/m², general corrosion resistance, low cost, suitable for indoor applications.
• Medium zinc layer: 80-120g/m², medium corrosion resistance, high cost performance.
• High zinc layer: 150-275g/m², super corrosion resistance, salt spray resistance can reach more than 500-1000 hours. Lifespan of more than 50 years.

Common zinc layer types

• Z40: 5.6μm zinc layer thickness, the most basic galvanized protective layer, rust prevention period of about 2-3 years (normal environment), the lowest cost galvanizing option.
• Z60: Economical conventional zinc coating, 8.4μm zinc coating thickness, anti-rust period of about 5-8 years (normal environment), the most cost-effective general choice.
• Z80: 11.2μm zinc coating thickness, medium protection level, anti-rust period of about 8-12 years, moderate price and performance balance.
• Z100: Enhanced protective coating, 14.0μm zinc coating thickness, anti-rust period of about 12-15 years, suitable for mildly corrosive environments.
• Z120: High-performance protection level, 16.8μm zinc coating thickness, anti-rust period of 15-20 years, excellent weather resistance, high selection rate.
• Z180: Heavy industrial protection, 25.2μm zinc coating thickness, anti-rust period of 20-25 years, extremely strong corrosion resistance.
• Z275: Same as G90, 38.5μm zinc coating thickness, highest level of protection, anti-rust period of more than 25 years, ultra-thick zinc coating protection.

Spangles

Zinc layer selection guide

• Environmental corrosion: Coastal/industrial areas require Z120 or above.
• Expected service life: Z100+ is recommended for long-term use.
• Cost budget: Z60-Z80 is the most cost-effective.
• Maintenance conditions: High zinc layer is required in difficult-to-maintain areas.

How much is a CGI sheet?

The price of a corrugated galvanized sheet needs to be considered comprehensively from many aspects. The thickness of 0.8mm, 1.0mm, 1.2mm, and 1.8mm determines the different prices. In addition, the type of substrate, the weight of the zinc layer, and the unit price corresponding to the order quantity of 20 tons, 100 tons, and 500 tons are all different. In addition, choosing a Chinese factory supplier will reduce the price by 20-40% compared to other countries.

Therefore, for the accurate price, you need to contact our professional technicians for a quotation.

Commonly used plate thickness

• 0.3mm: light roofs, temporary buildings.
• 0.4 mm~0.5 mm: standard residences, warehouses.
• 0.6 mm~0.8 mm: industrial plants, high wind pressure areas.
• 1.0 mm+: heavy structures, special projects.

GI Corrugated roof panels

Corrugated Galvanized Sheets

Package of corrugated galvanized sheet

Wanzhi Steel’s corrugated galvanized sheets are packaged in standard export packaging, with waterproof kraft paper and plastic film inside and thin steel sheet outside. Bundles of sheets will be packed in sturdy wooden boxes according to your requirements. Of course, the packaging can also be packaged according to your requirements.

Internal packaging of galvanized sheet

Outer Package

Corrugated galvanized sheet supplier near me – Wanzhi Steel

If you are looking for suitable materials, galvanized corrugated sheet is your best choice.

Wanzhi Steel is a high-quality professional corrugated galvanized sheet manufacturer located in Boxing County, Shandong, China. The factory stocks a wide range of base material options, as well as professional slitting, pressing, cutting and perforating equipment. With rich export experience and absolutely favorable prices, our products have been put into use in more than 120 countries around the world with high-quality products and good services. We can customize solutions according to your needs and provide free quotes. In addition, we also provide thoughtful after-sales service. You are welcome to contact us online to visit our office or factory.