galvanized | Wanzhi Group

SGCC vs SECC Galvanized Steel for Home Appliances

Galvanized steel sheet is one of the most common metal materials used in the manufacture of home appliances such as refrigerators, washing machines, air conditioners, and microwave ovens. It not only determines the product’s corrosion resistance, appearance quality, and lifespan, but also directly affects manufacturing costs and subsequent coating effects. Currently, the two most commonly used types of galvanized steel in the home appliance industry are SGCC hot-dip galvanized steel sheet and SECC electro-galvanized steel sheet. Although both are galvanized steel, they differ significantly in production processes, coating thickness, corrosion resistance, surface smoothness, and application locations. So, which is more suitable for home appliance manufacturing: SGCC or SECC? What is […]

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S350GD Galvanized Steel Coil

GI/GL/Tin, 製品 / wanzhigroup

Home » GI/GL/Tin » S350GD Galvanized Steel Coil S350GD Galvanized Steel Coil Width: 600-1500mm or customizable Thickness: 0.5 – 4.0mm Coating: 30g/m² – 275g/m² Product Introduce S350GD is a high-strength structural grade hot-dip galvanized steel grade named according to the European standard EN 10346, designed specifically for cold formed structural applications. S350GD galvanized steel coil is one of the most widely used structural grade hot-dip galvanized steels under the EN 10346 standard. It achieves a good balance between cold forming performance, load-bearing capacity, and corrosion resistance, making it a cost-effective material selection solution in engineering fields such as light steel structures, building purlins, and photovoltaic brackets. The meanings of each

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Galvanic corrosion occurs when stainless steel & galvanized steel screws come into contact.

Can stainless steel & galvanized steel be mixed?

Company / wanzhigroup

In engineering, stainless steel & galvanized steel (mainly austenitic stainless steel such as 304/316 & hot-dip galvanized HDG) often appear in the same structure. Stainless steel panels are fixed with galvanized brackets, galvanized bolts are screwed into stainless steel components, and stainless steel bolts are used to connect galvanized steel purlins, etc. However, a new question arises at this point: can stainless steel and galvanized carbon steel be used in direct contact? The answer is: it can be done in most conventional building environments, but there is a risk of Contact corrosion under specific conditions, and insulation isolation measures need to be taken. In fact, the contact between stainless steel

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Why does galvanized steel rust Galvanized steel plates are rust resistant

Why does galvanized steel rust? 4 common reason and what do

Company / wanzhigroup

Many people believe that galvanized steel will never rust because it has a protective zinc coating. However, in certain environments, galvanized steel can indeed rust. Understanding the reasons behind this can help you choose materials and maintain the steel more effectively. Below, we’ll explain in simple terms why galvanized steel can rust and how to address it. I. The Rust Prevention Principle of Galvanized Steel Before explaining why rust forms, let’s briefly understand why galvanized steel is rust-resistant. Zinc is more reactive than iron. When the coating is intact, zinc preferentially reacts with oxygen and water to form a dense zinc oxide or basic zinc carbonate film, preventing the internal

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Zinc-Coated Steel

GI/GL/Tin, 製品 / wanzhigroup

Home » GI/GL/Tin » Zinc-Coated Steel Zinc-Coated Steel Width: 600-1500mm or customizable Thickness: 0.12 – 1.2mm Spangle: Zero, Regular, Small, Big Product Introduce Zinc-coated steel (galvanized steel) is a composite material that enhances rust resistance by covering the surface of steel with a layer of zinc. This combination of “steel bottom+zinc layer” not only retains the strength of the steel itself, but also greatly extends the service life of the material by utilizing the sacrificial anodic protection effect of zinc. Product Parameters Item Parameters Products name Zinc-Coated Steel Grade SGCC/SGCH/DX51D/DX52D/DX53D Certificates ISO9001-2008,SGS,BV Thickness 0.12mm~1.2mm Width 600-1500 mm Coil Weight 3-8 tons zinc coating 30 ~ 275g/m² Surface treatment Hot-dip galvanizing

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Astm A653 g90 galvanized steel

GI/GL/Tin, 製品 / wanzhigroup

Home » GI/GL/Tin » Astm A653 g90 galvanized steel Astm A653 g90 galvanized steel Width: 600-1500mm Thickness: 0.12-4.0mm Coating: 90 oz/ft², 275g/m² Design Style: Customizable Product Introduce ASTM A653 G90 galvanized steel refers to the ASTM A653 specification. The zinc coating code G90 indicates that the total zinc coating density on both sides is 0.9 oz/ft² (average minimum value of three points on both sides) or 0.8 oz/ft² (minimum single point value on both sides). ASTM refers to the American Society for Testing and Materials. A-653 is one of its sub-standard numbers. ASTM A653 is the standard specification for hot-dip galvanized iron alloys or galvanized steel sheets. The core advantage of

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Z275 galvanized steel sheet

GI/GL/Tin, 製品 / wanzhigroup

Home » GI/GL/Tin » Z275 galvanized steel sheet Z275 galvanized steel sheet Width: 600-1500mm Thickness: 0.12-4.0mm Coating: 275g/m² Design Style: Customizable Product Introduce Z275 galvanized steel sheet refers to hot-dip galvanized steel with a zinc coating weight of 275g/m² (total both sides). The “Z” indicates zinc coating, and “275” represents the total coating mass per square meter under European standard classification (such as EN standards). Compared with lower coating grades like Z100 or Z120, Z275 offers significantly enhanced corrosion resistance, making it ideal for outdoor and humid environments. Equivalent American coating standard: G90 galvanized steel under ASTM International ASTM A653. Product Parameters Item Parameters Products name Z275 galvanized steel sheet Standards

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80 tons Z120 galvanized steel strips from Libya

Projects / wanzhigroup

In Libya’s booming construction, transportation, and manufacturing sectors, finding a reliable supplier of corrosion-resistant steel is crucial for ensuring smooth project progress and minimizing subsequent maintenance failures. Recently, Wanzhi Steel’s long-term client in Libya placed another order, purchasing an additional 80 tons of Z120 galvanized steel strips. This is more than just a routine transaction; it demonstrates the client’s trust in Wanzhi Steel’s consistent quality, customized services, and deep understanding of regional market demands. Product Introduction Libya has a typical desert climate, with scorching sun, frequent sandstorms, and a humid coastal environment, which places extremely high demands on the weather resistance of building materials. Z120 galvanized steel strips, with its

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Is Galvalume superior to galvanized in all conditions

NEWS / wanzhigroup

The corrosion resistance of aluminum zinc coated coils (such as 55% aluminum zinc alloy, commonly known as Galvalume) is superior to that of ordinary galvanized coils (pure zinc coating) in most environments, but not all environments are suitable. Its advantages and limitations need to be analyzed in conjunction with specific corrosion conditions. Comparison of Corrosion Resistance with Galvalume vs Galvanized Environment Type Aluminum Zinc (AZ/GL) Galvanized (GI) performance Conclusion Neutral/alkaline atmosphere The oxide film of aluminum (Al ₂ O3) is dense and stable, with excellent corrosion resistance Sacrificial protection of zinc layer, but faster corrosion rate AZ is significantly better than GI Weak acid environment (pH 4-6) Aluminum film partial

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SGC340D+Z275 GI Steel

GI/GL/Tin, 製品 / wanzhigroup

Home » GI/GL/Tin » SGC340D+Z275 GI Steel SGC340D+Z275 GI Steel Width: 600-1250mm or customizable Thickness: 0.13-4.0mm Design Style: Customizable Product Introduce SGC340D+Z275 galvanized coil is a high-strength galvanized steel widely used in the industrial field, combining the mechanical properties of SGC340D substrate and the corrosion resistance of Z275 coating. SGC340D: This is a grade specified in the Japanese Industrial Standard (JIS G3302) and is primarily used for hot-dip galvanized steel sheet and strip for structural applications. “SGC” stands for hot-dip galvanized steel sheet with a cold-rolled base material. “340” indicates the material’s minimum tensile strength (MPa). The “D” designation may indicate suitability for stamping or deep drawing (deep-drawing grades such

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