Galvanized Steel Coil | GI Coil Supplier
WhatsApp / Tel / Wechat
Still deciding? Get samples first, Contact US !
- Product Description
-
What Is Galvanized Steel Coil?
Galvanized steel coil is flat steel coated with zinc to prevent corrosion and enhance durability. It is commonly used in roofing, wall cladding, pipe manufacturing, and industrial equipment.
At Shineyond Group, all GI coils meet international standards for coating weight, thickness, and mechanical properties.Meet the national standards ASTM, EN, JIS, etc., and the products can be customized according to the needs to provide one-stop solutions.
Galvanized Steel Coil Specification
Material
Steel, Zinc Alloy
Standard
SGCC, ASTM A653/653M, ASTM A36, JISG302, etc
Grade
DX51D, DX52D, DC51D, DX54D, SGCC, SGCD, SECC, etc
Thickness
0.12-3.50mm
Width
100-1250mm
Zinc Layer
30-275g/㎡
Inner Diameter
508/610mm
Coil Weight
3-4tons, 4-6tons or according to customer requirements
Spangle
no spangle, minimized spangle, maximum spangle, regular spangle
Surface Treatment
oiled, passivated or chrome-free passivated, passivated + oiled
MOQ
None
Delivery Time
In stock Package
Standard export package
Types / Grades of Galvanized Coil
Hot-Dip Galvanized (HDG) Coil – Robust zinc coating via immersion
Electro-Galvanized (EG) Coil – Thin, uniform coating for precise forming
Custom Coatings – Tailored to specific environmental or industrial needs
Applications of Steel Galvanized Coil
Roofing sheets and wall cladding
Industrial buildings, warehouses, and sheds
Pipe and tube manufacturing
Automotive panels and components
Electrical panels and appliances
Agricultural structures and machinery
Why Choose Shineyond Group's Galvanized Steel Coil
Premium quality GI coils with strict tolerance control
Multiple coating weights and steel grades
Stable long-term supply for international projects
Professional technical support for construction and industrial applications
Buyer’s Checklist: How to Choose the Right GI Coil
Environmental Conditions: Coastal, industrial, or humid areas?
Coating Thickness: Z30–Z275 depending on exposure
Width & Coil Weight: Compatible with processing equipment
Budget vs Performance: Higher coating weight = longer service life
FAQ – Galvanized Steel Coil
Q1: What is galvanized steel coil used for?
It is used for roofing, cladding, pipe/tube production, industrial equipment, and automotive components.
Q2: Can Shineyond Group customize GI coil specifications?
Yes, thickness, width, coating weight, and surface finish can all be customized.
Q3: How is GI coil different from Galvalume coil?
GI coil is zinc-coated only; Galvalume combines aluminum + zinc for superior corrosion resistance and heat durability.
Looking for reliable GI steel coil suppliers?
Contact Shineyond Group today for a customized quote, technical consultation, or product samples tailored to your project needs.
Galvanized Steel Coil Process
1. Pickling: The steel coil to be galvanized is put into the acid solution for pickling, mainly to remove oxides, oil stains and rust on the surface of the steel to ensure the galvanizing effect.
2. After cleaning and pickling, rinse the surface of the steel coil with water to remove residual acids and chloride ions and other harmful substances.
3. Pre-treatment: Put the cleaned steel coil into the pre-treatment tank, which will form a protective film on the surface of the steel, thereby enhancing the combination of the steel coil and the zinc solution and greatly improving the coating quality.
4. Baking: After pretreatment, it is dried for subsequent galvanization process.
5. Zinc dipping: The baked steel coil is immersed in molten zinc to form a zinc layer to avoid corrosion of the steel coil, and adjust the galvanization time and temperature according to the demand to achieve the required quality.
6. Cooling: After the galvanization process, wait for the steel coil to cool down to make the zinc layer solidify quickly.
7. Crimping: After cooling, the galvanized steel coil is crimped and tested for quality, mainly including coating thickness, adhesion and uniformity.
Galvanized Steel Coil | GI Coil Supplier
WhatsApp / Tel / Wechat
Contact us via email
Still deciding? Get samples first, Contact US !
Products Category
Tag list
Galvanized steel coil
Galvanized Steel Sheet In Coil
Galvanized Steel Sheet Roll
Galvanized Steel Coil For Roofing Sheet
Hot Dip GI Coil
Electro galvanized steel coil
GI Coil
Galvanized Coil
Get a Free Quote
Note: Please leave your email address, our professionals will contact you as soon as possible!
