| Product Name | Galvanized steel sheet |
| Grade
| SGSS/SGCD1/SGCD2/SGCD3/SGC340,400,440,490,570/
CS TypeA,B,C/FS TypeA/FS TypeB/DDS TypeA,C/EDDS/DX51D+Z |
|
|
| Zinc Coating
| 30-275g/m2,double side |
|
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|
|
| Thickness | 0.12mm-4.0mm, all available |
| Width
| 500mm,1000mm,1200mm,1219mm,1250mm,1220mm, 1500mm, 2000mm.Or According To Customer's Requirement |
| Length
| 1000mm,3000mm,6000mm,12000mmm.Or According To Customer's Requirement |
| Spangle
| Big spangle, normal spangle, small spangle, non-spangle |
| Technology
| Hot Dipped |
Overview
The JIS S335J2 Hot Rolled Galvanized Steel Plate is a robust metallurgical product engineered for heavy-duty structural applications requiring high strength, impact resistance, and corrosion protection. Manufactured via hot rolling—followed by hot-dip galvanization—the plate features a thick zinc-aluminum alloy coating (SGCC) on a low-alloy steel substrate compliant with JIS S335J2 (yield strength ≥335 MPa).
With a nominal thickness of 0.12mm (customizable up to 12mm) and large sheet sizes (up to 3000x1500mm), this plate balances structural integrity with formability, making it ideal for load-bearing components in infrastructure, machinery, and heavy fabrication. The hot-rolled texture provides excellent weldability, while the SGCC coating ensures long-term resistance to atmospheric corrosion.
Features
Structural Strength & Compliance:
JIS S335J2 grade: Yield strength 335-470 MPa, tensile strength ≥510 MPa, meeting requirements for seismic-resistant structures (e.g., bridge supports, building frames).
Hot-rolled finish: Retains natural mill scale for enhanced paint adhesion, or 可选 spangle-free galvanized surface for direct use in exposed applications.
Heavy-Duty Corrosion Protection:
SGCC coating (Z180-Z350 g/m²): Ideal for industrial zones, coastal areas, and high-traffic environments, with a service life of 20-30 years in moderate climates.
Thick zinc layer (≥180g/m²): Resists abrasion from heavy machinery vibrations and airborne particulates in manufacturing plants.
Fabrication Flexibility:
Hot-rolled thickness: 0.12mm is optimized for lightweight structural components; thicker gauges (1-12mm) available for heavy-duty machinery bases.
Weldability: Low carbon content (≤0.20%) minimizes heat-affected zone cracking, compatible with MIG, TIG, and spot welding processes.
Industrial-Grade Durability:
Impact resistance: Charpy V-notch test results ≥27J at 20°C, ensuring reliability in cold climates and high-impact environments.
Thermal stability: Maintains mechanical properties up to 300°C, suitable for components exposed to moderate heat (e.g., industrial ovens, exhaust systems).
Application
Infrastructure Projects: Used for bridge girders, railway tracks, and port facilities, with Z350 coating resisting saltwater corrosion in marine environments.
Heavy Machinery: Forms tractor frames, excavator arms, and mining equipment bases, leveraging high yield strength to withstand dynamic loads.
Industrial Buildings: Fabricates steel beams, column sections, and warehouse trusses, meeting strict fire and load-bearing codes (e.g., ISO 3573, EN 10025).
Energy Sector: Ideal for wind turbine foundations, solar panel mounting structures, and power plant steelwork, combining corrosion resistance with structural reliability.
FAQ
Q: Why choose hot-rolled over cold-rolled for galvanized plates?
A: Hot-rolled is more cost-effective for thick gauges, offers better ductility for large-scale bending, and is suitable for applications where surface finish is less critical.
Q: Can this plate be used in direct contact with concrete?
A: Yes, the SGCC coating resists alkaline corrosion from concrete; apply a bituminous primer for prolonged underground exposure (e.g., foundation piles).
Q: What is the minimum order quantity for custom sizes?
A: Standard sizes (e.g., 2400x1200mm) are available from stock; custom sizes require 50 tons, with free sampling for qualification testing.
Q: How to inspect coating adhesion on hot-rolled plates?
A: Perform a cross-cut test (ASTM D3359): SGCC coating should show ≤5% flaking after 1mm grid cuts, indicating excellent adhesion to the hot-rolled substrate.
