Galvanized Steel Coil Supplier in China
Steel1Stop supplies hot-dip galvanized steel coil for roofing, cladding, HVAC, roll forming, appliances and industrial fabrication. Current product listings cover multiple grades and zinc-coating levels, including DX51D/DX52D-related options and Z100, Z150 and Z275 galvanized coil. Send your grade, size, coating, quantity and destination for a specification-based quotation.
Buy Galvanized Steel Coil by Specification, Not by Price Alone
The correct galvanized coil is defined by its base steel, governing standard, grade, dimensions, zinc coating mass, surface condition and downstream processing. Two coils with the same thickness can perform very differently when the coating requirement, formability or production method changes.
Include these details in your inquiry
- Governing standard and steel grade
- Thickness and width
- Zinc coating designation or coating mass
- Spangle and surface treatment
- Coil ID and maximum coil weight if restricted
- Total quantity
- Application or forming requirement
- Destination country or port
Galvanized Steel Coil Specifications
The following range reflects Steel1Stop's published general galvanized coil information. Grade-specific products can have narrower or different ranges, so final availability is confirmed against the exact RFQ.
| Specification Item | Published General Range / Options | Purchasing Note |
|---|---|---|
| Product Form | Galvanized steel coil | Hot-dip galvanized coil is the primary focus of this page. |
| Thickness | 0.12–6.0 mm | Individual grades and coating products can have different production ranges. |
| Width | 600–2,000 mm | Confirm parent-coil width and finished slit width before ordering. |
| Coil Weight | 3–25 metric tons | Final coil weight depends on specification and order requirements. |
| Coil ID | 508 mm / 610 mm | Specify handling limitations of your production line. |
| Zinc Coating | Published hot-dip range: 30–275 g/m² | Use the coating designation required by the governing standard or project specification. |
| Surface | Regular spangle, minimized/small spangle, zero spangle or smooth options depending on product | Surface choice affects appearance, forming and subsequent painting. |
| Common Reference Standards | ASTM A653/A653M, EN 10346, JIS G3302, ISO 3575 | Grade names belong to different standard systems; specify standard + grade together. |
| MOQ / Lead Time | Confirmed by specification and quantity | Do not assume the MOQ or lead time shown on one SKU applies to all galvanized coil products. |
Z100 vs Z150 vs Z275 Galvanized Steel Coil
The zinc coating designation is one of the main purchasing variables for GI coil. Select it according to the project standard, environment, forming requirement and expected corrosion exposure.
Lighter Zinc Coating
Z100 is generally selected where the specification allows a lower zinc coating mass. It can be suitable for controlled indoor conditions, downstream fabrication or applications where cost and formability are prioritized over heavier corrosion protection.
Balanced General-Purpose Option
Z150 provides a mid-range coating mass between lighter and heavier galvanized options. Buyers often evaluate it for general construction, fabrication and manufacturing applications when the governing specification calls for a moderate zinc coating.
Higher Zinc Coating Mass
Z275 is commonly specified where greater zinc coating mass is required for corrosion protection. Final suitability still depends on exposure conditions, design life, fabrication and the applicable standard.
Available Galvanized Steel Coil Products
Compare general HDG coil with grade- and coating-specific products. Open a product for detailed specifications, or send one RFQ if you need several grades or coating levels.
Common Galvanized Coil Selection Factors
The right grade and surface depend on whether the material will be roll formed, stamped, painted, exposed outdoors or used as a substrate for another coated product.
Commercial / General Forming
General-purpose grades are selected for profiles, panels, housings and other products that require reliable forming without unusually severe drawing.
Drawing & Deeper Forming
More formable grades should be specified when the part geometry requires greater drawability. The required forming severity should be included in the inquiry.
Structural Grades
Structural galvanized grades are selected when minimum yield strength and load-bearing performance are more important than deep forming capability.
Surface & Treatment
Spangle, passivation, oiling and other surface requirements should be specified according to storage, appearance, painting and downstream manufacturing needs.
Where Galvanized Steel Coil Is Used
Galvanized coil is commonly purchased as feedstock for high-volume fabrication. The downstream application determines the required grade, coating and dimensional tolerance.
Roofing & Wall Cladding
Used as feedstock for corrugated roofing sheets, wall panels, flashing and related formed building components.
Ductwork & Ventilation
Used for ducts, housings and sheet-metal components where formability and corrosion protection are important.
Roll-Formed Profiles
Suitable coil grades can be slit and formed into channels, purlins, trims and repeat-production profiles.
Appliances & Enclosures
Used for panels, cabinets, housings and components where consistent dimensions and protected surfaces are required.
Industrial Sheet-Metal Parts
Supplied for trays, brackets, covers, cabinets and fabricated parts that will be cut, bent or stamped.
Light Structural Components
Structural galvanized grades can support light-gauge construction components when specified by strength and coating requirement.
Common Galvanized Steel Coil Standards
International buyers often work with ASTM, EN, JIS or ISO specifications. These systems do not use identical grade names, so the purchase order should identify the governing standard, steel grade, coating designation and any required mechanical properties.
Common references for galvanized sheet and coil
- ASTM A653/A653M — hot-dip zinc-coated or zinc-iron alloy-coated steel sheet
- EN 10346 — continuously hot-dip coated steel flat products
- JIS G3302 — hot-dip zinc-coated steel sheet and strip
- ISO 3575 — continuous hot-dip zinc-coated carbon steel sheet for commercial and drawing qualities
Why Buyers Use Steel1Stop for Galvanized Coil RFQs
This page is designed around the information a buyer needs to compare supply options and prepare a clearer quotation request.
Multiple Product Options
Compare general galvanized coil with Z100, Z150, Z275 and grade-specific Steel1Stop listings from one commercial page.
Specification Matching
RFQs are organized around grade, standard, dimensions, coating, surface and application instead of a generic price request.
Processing Requirements
Buyers can include slitting, cut-to-length, coil handling and other downstream requirements when requesting supply.
Export-Oriented RFQ
Quantity and destination are collected with the technical specification so commercial and shipment requirements can be evaluated together.
What Affects Galvanized Steel Coil Price?
Price per ton only has meaning when the compared quotations use the same base material, thickness, width, zinc coating, surface, coil size, quantity and trade terms.
Steel Grade & Standard
Mechanical-property requirements and the governing standard affect the available material route.
Zinc Coating Mass
Higher zinc coating mass increases zinc consumption and changes the commercial specification.
Thickness & Width
Dimensions and tolerance influence production availability, material yield and processing cost.
Surface Treatment
Spangle, passivation, oiling and special surface requirements should be included when comparing quotations.
Order Quantity
MOQ and commercial conditions can vary by grade, coating, dimensions and production route.
Delivery Terms
Destination, Incoterm, packaging and shipment timing affect the total landed or delivered cost.
Send a Complete Galvanized Coil Inquiry
The more complete the specification, the easier it is to compare suitable supply options and avoid revisions later in the quotation process.
- Standard: ASTM / EN / JIS / ISO / project specification
- Grade
- Thickness × width
- Zinc coating designation or g/m² requirement
- Spangle / surface treatment
- Coil ID and maximum coil weight
- Total quantity
- Application or forming process
- Destination country / port
- Required delivery date
Need Z100, Z150, Z275 or a Custom Coil Specification?
Send the exact requirement instead of choosing by coating name alone. Steel1Stop can review the available product options against your requested grade, dimensions, zinc coating, quantity and destination.
Galvanized Steel Coil FAQ
What information is required for a galvanized steel coil quote?
Provide the governing standard, grade, thickness, width, zinc coating requirement, surface treatment, coil ID or weight limitations, total quantity and destination. Include the intended forming or fabrication process when it affects grade selection.
What is the difference between Z100, Z150 and Z275 galvanized steel coil?
These designations represent different zinc coating mass levels in metric coating systems. Z100 has a lighter zinc coating than Z150, while Z275 has a higher zinc coating mass. The required coating should be selected according to the governing standard and exposure conditions.
Is DX51D an ASTM A653 grade?
No. DX51D is associated with the EN grade system. ASTM A653/A653M uses its own designations. When comparing equivalent supply, specify the governing standard plus the required mechanical and coating properties rather than treating grade names from different standards as identical.
Can galvanized steel coil be supplied in custom widths?
Custom widths can be evaluated according to parent-coil availability and the required slitting specification. Include finished width, tolerance, quantity and maximum coil weight in the RFQ.
Which zinc coating should I choose for roofing?
Roofing applications often require more corrosion protection than controlled indoor applications, but the correct coating depends on climate, coastal exposure, design life, paint system and local or project standards.
What is the MOQ for galvanized steel coil?
MOQ should be confirmed for the specific grade, coating, dimensions and quantity. A minimum shown on one Steel1Stop product listing should not be assumed to apply to every galvanized coil specification.
Can I request MTC or third-party inspection?
State the exact documentation and inspection requirements in the RFQ. The required mill documents, test scope and third-party inspection arrangements should be confirmed before order placement.
Can galvanized coil be used as a substrate for PPGI?
Yes, galvanized steel coil is commonly used as a metallic-coated substrate for prepainted steel. For a finished color-coated product, review Steel1Stop's PPGI products rather than ordering bare galvanized coil alone.
Get a Galvanized Steel Coil Quote Based on Your Exact Specification
Send the grade, standard, thickness, width, zinc coating, quantity and destination. A specification-based inquiry makes it easier to compare the right galvanized coil option for your project or production line.