GI Steel

Wanzhi Steel Materials is a professional supplier of coated steel products, including GI Steel, GL steel, PPGI PPGL steel, and stainless steel. Provide high-quality galvanized steel to customers in the construction, manufacturing, and other industries in nearly 100 countries.

We offer not only steel materials, but also customized services according to the customer’s project, as well as further processing, such as slitting, cutting, stamping, profiling, molding, painting, and so on.

Output: 600,000 tons

MOQ: 10 tons

Delivery time: 5–45 days

Product: coil, sheet, panel, strips, etc.

GI Production

GI Steel For Sale – Wanzhi Group

Wanzhi Steel is a metal material factory from China, that has 2 galvanized production lines, 1 aluzinc/ZAM production line, and 3 color-coated production lines, the product range includes coils, sheets, strips, and profiles in different material grades. We offer premium GI steel and professional customized solutions at wholesale prices to our customers in different fields.

G60 Galvanized Steel Sheet
Sheet
G60 Galvanized Steel Coil
Coil

 

Specifications Of Galvanized Steel

Currently, Wanzhi has two GI steel production lines with an average monthly output of 20,000 tons, the standard models include 0.5-2.0mm*1250mm, z40, z60, z80, z120, z180, z275, etc. It can be customized according to your needs. And, reference standards EN 10346, ASTM A653, JIS G 3302.

MaterialSGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D, etc
Thickness0.12mm-6mm
WidthThe conventional width below 0.5mm is 1000mm, 1200mm, and above is 1000, 1250mm
coil weight8-10 tons /customized
Tolerance"+/-0.02 mm
Substrate TypeHot rolled coil, Cold rolled coil
Surface structureZero spangles, Small spangles, Regular spangles, Big spangles
Zinc layer thickness30g/㎡-275g/㎡ (Z275/G90)
StandardAISI, ASTM, BS, GB, JIS
Implementation standardsGB/T2518 GB/T25052, EN10346, JIS G3302, ASTMA653
CertificatesSGS, ISO 9001,CE

Grades of GI Steel

The galvanized steel grades produced by Wanzhi are mainly quoted from

Grades: DX51D/DX52D/DX53D/DX54D+Z/ ZM/ AZ / AM, CSA, CSB, CSC, FS-A, FS B, EDDS, SGCC, SGCD1, SGCD2, SGCD3.

GI Steel Big Spangle

JIS G3302 SGCC

JIS G3302 SGCC hot-dip galvanized steel sheet material is standard for general industrial use, has good corrosion resistance, and is ...

Q235 Galvanized Steel

Wanzhi Group is Q235 galvanized steel supplier from China, which the steel is a hot-dip galvanized mild steel that meets ...
Galvanized Steel Coil G90

Galvanized Steel G90

G90 galvanized steel is the designation in ASTM A653 specification, indicating a coating thickness of 0.9 ounces per square foot ...

z275 Galvanized Steel for Sale

Wanzhi Group is a steel supplier with more than ten years of experience in galvanized steel export. Two galvanizing production lines ...

Galvanized Steel Surface Finish

There are four common surface treatments: Passivated galvanized, Glazed galvanized, Paint sealed galvanized, and Phosphated galvanized, It can extend the service life, wear resistance, and corrosion resistance of steel coils.
Galvanized Steel - Surface

Galvanized Steel Surface Structure

The surface structure of galvanized steel coils with a thickness of up to 3.0 mm can be customized according to requirements, e.g. GI zero spangle or regular spangle steel. When the thickness of the steel exceeds 3.0 mm, a hot-dip galvanizing process is used, which results in the formation of zinc splashes on the surface, e.g. small spangle, large spangle, regular spangle.

Hot-dip Galvanizing
Coil – Big Spangle
Galvanized Steel - Small Spangles
Coil – Small Spangle
Galvanized Steel Price of Zero Spangle Coil
Coil – Zero Spangle

Galvanized Steel Products

Wanzhi Group produces all kinds of galvanized steel materials made of Q195-Q345, SGCC, SGCD1, SGCD2, SGCD3, SGC340, SGC400, SGC440, DX51D, DX52D, DX53D, DX54D as substrates, such as galvanized coil, galvanized sheet, galvanized roof, galvanized strip, galvanized steel, prepainted galvanized steel (PPGI), prepainted galvanized steel (PPGL), etc.

More Details

Types Of GI Steel

Hot-dip galvanizing
Hot-dip galvanizing involves immersing steel in molten zinc to form a zinc-iron alloy coating. It offers excellent corrosion resistance and is suitable for outdoor and highly corrosive environments.
Electro galvanized:
Is an electrochemical process that deposits a thin layer of zinc on the surface of steel. It produces a uniform coating thickness and a bright surface, making it suitable for general environments.

The Price Of GI Steel

The price of GI steel is 600–700 dollars per ton, type of galvanization, dimensions, thickness, and market conditions determine the final price. Different suppliers may offer different prices, so staying informed about the steel market and choosing a supplier with good value for money is advantageous for project profitability. If you need advice or solutions, feel free to leave your requirements, and Wanzhi Group will provide you with a free consultation.

UseRecommended
Indoor usesZ10 or Z12 (100 g/㎡or 120 g/㎡)
Suburban areaZ20 and painted (200 g/㎡)
Urban or industrial areaZ27 (270 g/㎡) or G90 (American Standard) and painted
Coastal areaThicker than Z27 (270 g/㎡) or G90 (American Standard) and painted
Stamping or deep drawing applicationsThinner than Z27 (270 g/㎡) or G90 (American Standard) to avoid coating peeling off after stamping

Benefits And Applications Of GI Steel

GI Steel has a protective layer of zinc. The galvanized coating helps prevent corrosion and rust, enhancing the durability and aesthetics of the steel, and making it a popular choice for a variety of applications.

Galvanized - Usage
Usage
Construction: used in the construction industry for roofing, siding, structural beams, fences, etc.
Automotive Industry: used in car bodies, frames, and other automotive components.
Household Appliances: used in the manufacturing of household appliances like refrigerators, washing machines, and air conditioning units.
Infrastructure: used in infrastructure projects such as bridges, highways, transmission towers, etc.
Agricultural Equipment: Farming equipment, such as fencing, barns, irrigation systems, etc.
Manufacturing: used in various manufacturing processes, including the production of steel pipes, containers, and industrial equipment.

Wanzhi- Global Cases of Galvanized Steel

Wanzhi has a good track record in exporting galvanized steel to the international market, meeting the needs of different industries with quality products and services.

Galvalume Steel Coil in Brazil100 ton Galvalume Steel Coil in Brazil.
84 Tons of Galvanized Steel Strips84 tons of Galvanized Steel Strips to Bolivia.

1000 Tons of Galvanized Coils1000 Tons of Galvanized Coils to Ecuador. (The first batch)
65 Tons of Galvanized Coils65 Tons of Galvanized Coils to Saudi Arabia.

GI Steel Coil Sheet Supplier

Clients in Wanzhi Group Factory

Clients in Factory

Production And Supply Capabilities – Wanzhi Group

Wanzhi has 8 production lines and multiple storage centers, with a complete supply chain management system, from the 24-hour online service of the marketing center to various testing equipment in the laboratory, to the production of conventional and customized models in the factory, and sufficient spot reserves in the storage center, which can provide customers with perfect services at any time.

Production of Galvanized Steel Coil and Sheet
Production of Galvanized
Production of Prepainted Steel
Production of Prepainted
Inspection of Steel Coil and Sheet
Inspection of Steel

Packing of Coil and Sheet

Wanzhi Steel’s coils and plates are routinely packaged in individual packages weighing 5-10 tons in plastic film, moisture-proof paper, galvanized iron, etc. The size of the packages can be customized according to the transportation and storage conditions.

Coil and sheet - Packing
Packing

Service And Customer Reviews – Wanzhi Group

Wanzhi provides a one-stop service, from pre-sales to after-sales. Whether it is PPGI or GI, Wanzhi’s product quality and the professional ability of its staff have been recognized by customers.

Customer Reviews From Whatsapp
PPGI Roofing in Libya

Process of Galvanized Steel

1. Surface treatment: The steel surface needs to be cleaned to remove oil, rust, and other impurities, ensuring a smooth and clean surface.
2. Pre-treatment: After surface treatment, the steel undergoes pre-treatment, including degreasing, derusting, and phosphating processes to enhance the adhesion of the coating.
3. Galvanization: Choose between hot-dip galvanizing or electroplating based on the desired galvanization method.
4. Hot-dip galvanizing: Immersing pre-treated steel in molten zinc to create a zinc-iron alloy coating on the surface.
4. Electroplating: Electrochemically depositing a thin layer of zinc on the steel surface.
5. Inspection and coating: Galvanized steel undergoes inspection to ensure the coating quality meets standard requirements. If needed, the steel can also undergo coating to enhance the surface’s decorative and anti-corrosion properties.
6. Packaging and shipping: Finally, galvanized steel that passes inspection is packaged and shipped to customers or downstream manufacturers for use.

When buying GI steel, factors to consider include the intended application, required specifications, supplier reputation, and quality certifications to ensure you get the right product that meets your needs. Or you can leave your request and Wanzhi Group will provide you with a quotation suitable for your project.

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