Zinc Steel Sheet

Zinc steel sheet refers to steel sheet with zinc plating. Zinc plating is relatively low in cost, protective, and beautiful in appearance. It is a common coating for nuts, bolts, washers, metal stampings, automotive parts, and industrial processed parts. Wanzhi Steel is a professional supplier & manufacturer of zinc steel plates. We provide a variety of surface treatments & machining services. The zinc layer thickness and plate size can be customized. You are welcome to contact us.

Zinc Steel Sheet Specification

Item	Zinc steel sheet
Grade	Q195,Q235,q345,SPCC,DX51D,DX52D,DC01,DC02,SGHC
Surface Treatment	Chromated/non-Chromated, Oiled/Non-oiled, Skin Pass
Spangle Type	Big spangles, regular spangles, small spangles, zero spangles
Thickness	0.15 mm-0.8 mm
Width	600-2000mm
Length	1400-1799mm, 1800-2000mm, 2001-3600mm. As per your requirements
Zinc Coating	30 g-275 g/m2
Place of origin	Shandong, China
Package	Waterproof Packing Materials
MOQ	5 tons or 500 pieces
Delivery time	15-28 days

Below are the quality test reports of our zinc steel sheets.

What is zinc steel sheet?

“Zinc steel sheet” refers to galvanized steel sheet. It is a steel product that is coated with a layer of zinc on the surface of the steel sheet through hot-dip or electroplating processes. It has good corrosion resistance and processability and is used in construction, automobiles, home appliances, and other fields.

Commonly used zinc layer of zinc steel plate

The thickness of the zinc layer is usually expressed in grams per square meter (g/m²) or micrometers (μm). Common grades:

Standard	Zinc layer code	Zinc layer weight (double-sided)
GB/T	Z80	80g/m² (≈10μm)
	Z120	120g/m² (≈15μm)
	Z275	275g/m² (≈35μm)
ASTM	G30	30g/m² (≈4μm)
	G60	60g/m² (≈8μm)
	G90	90g/m² (≈11μm)

Note: The zinc layer weight usually refers to the sum of both sides (e.g., Z120 means 120g/m² on both sides).

Benefits of Zinc Plating

• Excellent corrosion resistance: This is the main advantage of galvanized steel. The zinc layer prevents the internal steel from contacting air and moisture, thereby effectively preventing the steel from rusting and corroding.
• Good processing performance: It can be processed in many ways like ordinary steel, such as cutting, bending, stamping, welding, etc.
• Economical and practical: It has a long service life and can reduce the cost of repair and replacement caused by corrosion. In the long run, it has a high cost performance.
• Beautiful: The surface is silver-gray and has a certain decorative effect. It can be directly used in occasions where appearance is required.
• Good environmental performance: Zinc is a relatively environmentally friendly metal element with good stability in the natural environment. Galvanized steel will not release harmful substances during use.
• Good electrical and thermal conductivity: It still retains the basic physical properties of steel, making it safe and reliable to use in the power industry.

What are zinc sheets used for?

Application in different fields

• Roof and wall: It not only prevents erosion by rain and wind, and sand and prolongs its service life, but also has a beautiful appearance and is available in a variety of colors.
• Structural support: Roof trusses, purlins, keels, etc. Its high strength and corrosion resistance ensure the stability and safety of the building, and it can work reliably even in a humid or corrosive environment.
• Building hardware: Door and window frames, hinges, handles. Galvanizing prevents hardware from rusting, ensures normal use function and aesthetics, and improves its wear resistance and weather resistance.
• Automobile body: Applying anti-corrosion paint on the body, doors, trunk lid, and other parts can improve corrosion resistance, especially in coastal areas or in winter, and can prevent the body from rusting prematurely.
• Auto parts: Chassis, exhaust pipes, engine hoods, etc., galvanizing can protect them from corrosion and reduce the frequency of maintenance and replacement.

• Electricity: transmission towers and poles, cable trays and trunking, the high corrosion resistance of galvanized steel ensures the structural strength of the application.
• Home appliances: galvanized steel has good formability and surface quality, and can be made into shells of various shapes through stamping, stretching, and other processing techniques.
• Furniture: the frames of tables and chairs, the springs of sofas, and filing cabinets. In addition to rust prevention, galvanizing also adds a metallic texture.
• Agriculture: greenhouse frames, greenhouse brackets, and irrigation equipment pipes. This material can adapt to humid environments and chemical erosion.

Application of different zinc layers

• Z80~Z120: Ordinary steel structures such as roofs, walls, fences, etc.
• Z180~Z275: Coastal facilities, highway noise barriers.
• Electrogalvanizing (10~20g/m²): Chassis cabinets, home appliance housings.

Zinc coated process types

Hot-dip galvanizing

Immerse the steel in molten zinc at 450-500℃ to form a continuous and dense zinc metal coating on the surface of the steel. The process involves metal melting, infiltration, and chemical reaction between zinc and steel. There are zinc flowers on the surface, the color is darker, generally silvery white, non-luminous, and non-reflective. The coating is thicker, generally 30-60μm, and can even reach 200μm. It has strong corrosion resistance, which is dozens of times that of electroplated zinc.

Electroplating zinc

Using the principle of electrolysis, the workpiece is placed as the cathode in an electrolyte containing zinc ions. Through the action of direct current, the zinc ions are reduced and deposited on the surface of the workpiece to form a coating. The surface is smooth and delicate, the appearance is bright, and the coating is relatively thin, mostly 5-30μm.

Is zinc more expensive than steel?

While zinc, aluminum, and steel roofs are all more affordable than materials like copper, there are differences in price. Of the three, zinc is the most expensive, both in terms of material cost and installation cost. In projects with a limited budget, zinc is cost-prohibitive; aluminum is less expensive, but considering material price vs. performance, steel is by far the most cost-effective option. Additionally, zinc steel roof panels are available in a variety of color options, and we can easily replicate the look of zinc or aluminum at a lower price.

Zinc steel sheet precautions for use

1. Avoid scratches from sharp objects and apply anti-rust paint in time.
2. Avoid using corrosive detergents and wipe with mild detergent or a damp cloth.
3. Avoid direct contact with other metals and avoid long-term exposure to wet soil or corrosive environments.
4. Choose a zinc steel plate with a qualified quality and appropriate coating.

Buy Zinc steel sheet from Wanzhi Steel