1mm Gi Sheet

In modern construction and manufacturing, the 1mm galvanized steel sheet is a durable and affordable material. It has excellent corrosion resistance, high strength, and easy formability, and is widely used in roofing, automotive panels, and industrial equipment. Wanzhi Steel provides all grades of 1 mm-thick galvanized steel sheets and provides mechanical processing services such as perforation, corrugation, etc. If you need help, please feel free to contact us.

1mm Gi Sheet Specification

Item	1mm Gi Sheet
Place of origin	Shandong, China
Delivery Time	15-21 days
Standard	AISI, EN, GB, ASTM, JIS
Spangle Type	Regular Spangle, big spangle, small spangle, zero spangle
Material	CGCC/SGCH/G350/G450/G550/DX51D/DX52D/DX53D
Length&Width	As customers’request
Thickness	1mm
Technology	Cold Rolled Hot Dip Galvanized
Surface	Zinc Coated
Zinc Coating	30-275g/m2
Price Term	Ex-work, FOB, CIF , CFR, etc
Certificate	MTC,ISO9001, BV,TUV
Payment	T/T 30% Deposit
Transportaion	By sea
MOQ	5 Tons

What is 1mm galvanized steel sheet?

1mm galvanized steel sheet is a thin, flat steel sheet that has a layer of zinc on the surface through a hot-dip galvanizing process. The zinc layer protects the underlying steel from rusting, allowing it to maintain good performance even in harsh environments, thereby extending its service life and reducing maintenance.

Please view our galvanized coil production and slitting process video.

Main Features

• Corrosion resistance: The zinc coating prevents rust, making it ideal for humid/coastal areas, with excellent rust resistance.
• Lightweight: Strong and easy to handle, durable and suitable for structural purposes.
• Flexibility: Excellent formability can be bent, stamped, or welded without cracking.
• Cost-effective: Cheaper than stainless steel, but with similar performance.
• Aesthetics: Shiny metal surface, can be painted or powder-coated.

Conventional coating classification and weight

• Electrogalvanizing (EG): The coating is uniform and the surface is smooth, but the corrosion resistance is weaker than hot-dip galvanizing. Common coating weights are 10/10 g/m² (10g on one side, 20g on both sides), 20/20 g/m² (20g on one side, 40g on both sides).
• Hot-dip galvanizing (HDG): The coating is thicker and has strong corrosion resistance, but the surface is not as smooth as electrogalvanizing. Common coating weights are Z60, Z80, Z100, Z120, Z275, etc.

Application

Recommended coatings for different applications

• Z60 or lower: mildly corrosive environments, such as indoor dry environments.
• Z80-Z120: moderately corrosive environments, such as outdoor, humid environments.
• Z120 or above or galvalume sheet: severely corrosive environments, coastal areas, chemical industry areas.
• Choose a thinner coating or alloy coating (GA): subsequent processing is required, such as stamping and welding.

Architectural and building design applications

• Roof and wall cladding: lightweight, weather-resistant, long-term color retention.
• Ceilings and partitions: fire-resistant, easy to install, and easy to clean.
• HVAC ducts: corrosion-resistant, smooth airflow.

Automotive and transportation applications

• Body panels: thanks to their high strength, they resist dents.
• Truck trailers and containers: high strength and durability.

Industrial and manufacturing applications

• Machine guards and housings: spark and chemical protection.
• Storage racks and shelves: high load-bearing capacity, can be used in factory racks or safety enclosures.

Applications in household appliances

• Kitchen chimneys and splashbacks: heat-resistant, moisture-resistant, fire-resistant, and waterproof.
• Washing machine drums: rust-proof and long service life.

How is 1mm thick hot-dip GI sheet made?

1 Base steel selection: cold rolled steel sheet is rolled to 1mm thickness to ensure uniformity and facilitate subsequent processing.

2 Cleaning and pretreatment: degreasing → pickling → flux (removing impurities).

3 Hot dip galvanizing: multiple continuous immersions in molten zinc liquid for hot dip to obtain a uniform coating.

4 Cooling and finishing: air cooling → passivation (enhancing corrosion resistance).

5 Quality inspection: test coating thickness, adhesion, and surface smoothness.

Additional Processing of Wanzhi Steel

We have several automatic laser perforating equipment, corrugated machinery, slitting equipment, and 2 color coating production lines, which can support your stamping, rolling, coloring, striping, and other requirements for 1mm thick galvanized sheet.

Wanzhi Steel– Your Trustworthy Galvanized Steel Sheet Supplier

Wanzhi Steel is a leading manufacturer of high-quality galvanized steel sheets in China. We have decades of experience in production and export, specializing in providing 1mm galvanized steel sheets for projects of global customers. We have a wide range of length and width options, zinc layer options. We have a strict quality control system and accept third-party quality inspections. Our products are durable and affordable, and are trusted by global customers.

 

If you want to know more about 1mm galvanized steel sheets, we are happy to help and serve you.