Galvanized Corrugated Roofing Sheet

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Galvanized Corrugated Roofing Sheet

Galvanized corrugated steel sheet is also known as galvanized steel roofing sheet, galvanized color roofing sheets. Gnee can provide wave shape, T shape, red color, blue color, green color, according to RAL color. Galvanized steel roofing sheet is a durable and lightweight material, which has the features of excellent corrosion resistance and easy installation. Free Samples Provided.

Corrugated sheets are made from galvanized steel coils, galvalume steel coils, galvalume pre-painted sheet and aluminum sheet, pre painted hot dip galvanized steel coils. Corrugated steel roofing sheets are featured with easy installation, high strength and low in lost.

1. Wall Cladding & Roof Panels

2. Fencing, Siding, Partitoning, Garage Doors

3. Sandwich Panels

4. Home Appliance Shells,Chimneys, Kitchenware, etc.

  • ASTM
  • AISI
  • GB
  • JIS
  • DIN
  • BS

Thickness: 0.12mm-4.0mm, or as you required

Width: 750mm-1250mm, or as you required

Length: 1400-1799mm, 1800-2000mm, 2001-3600mm, 3601-3660mm, or as you required

  1. Material Selection:
    • The process begins with the selection of high-quality flat steel coils. These coils are typically made from cold-rolled or hot-rolled steel, and the choice of material may depend on specific requirements.
  2. Cleaning and Pretreatment:
    • The steel coils are cleaned to remove any impurities, such as rust, oil, or mill scale. This cleaning process ensures good adhesion of the zinc coating.
    • The cleaned coils may undergo a pretreatment process, which may include chemical treatments or coatings to enhance the bonding between the steel and the zinc.
  3. Forming and Corrugation:
    • The flat steel coils are then passed through a series of rollers to create the corrugated pattern. This corrugation not only adds strength to the roofing sheets but also provides channels for water drainage.
    • The corrugation process can be done in various patterns and sizes to meet specific design and functional requirements.
  4. Fluxing:
    • After corrugation, the steel sheets are fluxed to remove any remaining oxides on the surface and to facilitate the formation of a uniform zinc coating.
    • Fluxing is often done by passing the sheets through a flux solution or by applying a powdered flux.
  5. Galvanizing:
    • The corrugated steel sheets are then immersed in a bath of molten zinc at temperatures typically around 450°C (850°F). This hot-dip galvanizing process forms a protective layer of zinc on the surface of the steel, providing corrosion resistance.
    • The sheets are lifted from the zinc bath, and excess zinc is allowed to drain off.
  6. Cooling:
    • After galvanization, the corrugated sheets are allowed to cool. Controlled cooling may be employed to ensure a strong bond between the zinc coating and the steel substrate.
  7. Inspection:
    • The galvanized corrugated roofing sheets undergo thorough inspection to ensure that the coating is uniform and meets the required standards for thickness, appearance, and adherence.
    • Visual inspection and various testing methods may be used to assess the quality of the galvanized coating.
  8. Cutting and Packaging:
    • The galvanized sheets are cut to the desired lengths and packaged for distribution. Proper packaging is essential to protect the sheets during transportation and storage.

Available, welcome to consult

A) Packaging Details: Waterproof paper,galvanized steel covered and steel strip packed with iron pallet.
B) Delivery Time:30-50 days, 7 days for stock goods.
C) Loading Port:Shanghai ,Tianjin, Qingdao.
D) Offer Ability:5000MT/Per Month.
E) MOQ:1 ton.

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Provide Various Shapes and Color

As a leading manufacturer of gi corrugated steel sheet, Gnee Steel offers a wide thickness range and color corrugated designs for different applications.

Gnee provides color according to RAL color, also can be customized to your requirements. Base plate: GI, GL, PPGI

gi corrugated roof panel

Galvanized roofing sheet has advantages including beautiful, classical appearance and graceful taste. It can be widely used in village, hotel, exhibition, vocation village, family construction and outdoor decoration.

Parameters Of Galvanized Corrugated Roofing Sheet
Width600mm – 1250mmColorTop side is made according to RAL color, back side is white grey in normal
Tolerance+/-0.02mmZinc Weight30-275g
Top Paint8-25micronsBack Weight3-25 microns
Base PlateGI, GL, PPGINormal Roof Shapewave shape, T shape
CertificationISO,SGS, CE, BVMonthly Output10000tons
SGCD/DX53D+Z≤0.10≤0.30≤0.50≤0.05≤0.030 ≤0.020
GradeYield Strength MPaTensile Strength MPaElongation %
SGCC(DX51D+AZ)≥205≥270 ≥22

Why Choose Gnee galvanized steel Product?

If you want to find a trustable galvanized steel sheet/coil/tube/pipe/rod/profiles manufacturer, Gnee will be your best choice. 20 years of experience galvanized steel products manufacturer, certified by CE, ISO, SGS and ASTM, EN. We strictly control the quality of our galvanized steel products, using high-quality raw materials and advanced production processes to ensure that our products meet international standards and customers’ requirements.

In addition, our galvanized steel products have been successfully exported to more than 60 countries such as Singapore, Vietnam, Malaysia, Indonesia, Pakistan, UAE, and South Korea, etc. Many regular customers visit our company and factory and make multiple orders.


What Services Does Gnee Provide?

Gnee can provide the following measurement services for galvanized steel product:

Coating Thickness: Measurement of the thickness of the zinc coating on the galvanized steel surface. This is crucial for ensuring that the steel has an adequate protective layer.

Dimensions: Checking and documenting the dimensions of the galvanized steel, including length, width, and thickness of the steel itself.

Weight: Determining the weight of the galvanized steel, which may include both the steel and the zinc coating. This is often measured in pounds or kilograms.

Surface Inspection: Examining the surface quality of the galvanized steel for any defects, imperfections, or irregularities.

Adherence to Standards: Verifying whether the galvanized steel meets specific industry or international standards for quality and performance.

Corrosion Resistance Testing: Assessing the corrosion resistance of the galvanized steel, which is a key property of the zinc coating.

Ask Measurement service

Gnee can customize the size and shape of galvanized steel products for your project according to specific project needs. The custom design of the galvanized steel product is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the galvanized steel products design to meet the specific needs of your engineering.

● According to the strength requirements of structural design, adjust the thickness, width, and length of galvanized steel product.
● The shape of the galvanized steel product can be designed according to the characteristics of the project.
● If you consider the convenience of installation and maintenance, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Purchasing Gnee galvanized steel products can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.

Precision Cutting Service: Galvanized steel products can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut galvanized steel sheet/coil/tube into required blocks, special-shaped parts.
Bending and forming: Galvanized steel products are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: Welding services for joining multiple pieces of galvanized steel, creating complex structures.
Punching and Perforation: Punching or perforating services for creating holes, slots, or other patterns in the galvanized steel. Meet specific assembly requirements.
Surface treatment: Additional coating or finishing processes to enhance the aesthetics or performance of the galvanized steel.

Ask Deep Processing Services

Gnee galvanized steel products can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that galvanized steel products comply with relevant standards and regulations.

Coating Thickness Measurement: Verification of the thickness of the zinc coating on the galvanized steel surface.
Material Chemical Composition Analysis: Through chemical composition analysis, determine whether the composition of the galvanized steel products meets the standard requirements.
Mechanical Performance Test: Mechanical performance test includes tensile test, impact test, bending test, etc., which are used to determine whether the mechanical properties such as strength, toughness and ductility of products meet the specified requirements.
Corrosion Performance Test: Through the corrosion performance test, evaluate the corrosion resistance of galvanized steel products, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness Test: Hardness test is used to measure the hardness of galvanized steel products, and its strength and wear resistance can be evaluated according to the hardness value.
Adherence to Standards: Inspection to confirm that the galvanized steel meets specific industry or international standards for quality and performance.
Surface Inspection: Examination of the surface quality to identify any defects, imperfections, or irregularities.
Dimensional Inspection: Verification of dimensions to ensure that the galvanized steel meets the specified size requirements.

Ask Deep Processing Services

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