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Galvanized Steel bar
Galvanized Steel bar
Galvanized steel bar refers to a steel bar that has been coated with zinc, typically through a process called hot-dip galvanizing, where the steel is submerged in molten zinc to form a protective zinc layer. This coating significantly enhances the steel’s corrosion resistance.
ZhaojianSteel offers high-quality galvanized flat bars, round bars, angle bars, and square bars to meet a wide range of structural and manufacturing needs. Our galvanized steel products feature excellent corrosion resistance, making them ideal for outdoor, high-humidity, and high-strength environments. They are designed to extend service life and reduce maintenance costs effectively.
Specifications of Cold Rolled Steel Sheets & Coils
| Item | Specification |
|---|---|
| Available Types | Flat Bar, Round Bar, Square Bar, Angle Bar |
| Size Range | – Flat Bar: Width 20–200 mm, Thickness 3–20 mm |
| – Round Bar: Ø 6–50 mm | |
| – Square Bar: 10×10 – 50×50 mm | |
| – Angle Bar: 20×20×3 – 100×100×10 mm | |
| Length | Standard: 6 meters, or customized (up to 12 meters available) |
| Surface Finish | Hot-dip galvanized (standard); electro-galvanized available upon request |
| Zinc Coating Thickness | 40–100 μm (Z80 – Z275, or as per request) |
| Base Material | Carbon Steel (Q235, A36, S235JR, SS400, SAE 1018, etc.) |
| Standards | ASTM A36, A29, EN 10025, GB/T 700, GB/T 706, etc. |
| Tensile Strength | 370 – 550 MPa (depends on grade) |
| Certification | Mill Test Certificate (MTC), SGS, BV, ISO 9001 available |
| Packaging | Bundled with steel straps and waterproof wrapping, or customized |
Quality Certification
Galvanized Steel Bar Uses
Building structures: Used for stair railings, door frames, handrails, and support components to enhance structural stability and resist weather exposure.
Bridges and infrastructure: Serve as reinforcement bars, connection plates, or welded parts, providing strength support in highly corrosive environments.
Industrial platforms and machine frames: Ideal for equipment bases, steel platforms, and heavy machinery structures requiring high strength and durability.
Agricultural and outdoor facilities: Used in fence posts, livestock frames, and sheds, offering long-lasting durability and weather resistance.
Electrical and communication towers: Applied as grounding bars or support elements, ensuring structural integrity and corrosion prevention.
More Details About Zhaojian Steel Products
Key Features
Performance Assurance
Selected premium steel ensures rebar strength and ductility.
Strict Dimension Control
Precision rolling guarantees stable dimensions for accurate construction installation.
Direct Supply
Reliable quality, full specifications, and stable supply from the manufacturer.
Galvanized Steel Bar Manufacturing Process
- Bar Forming: The raw materials, such as steel billets or hot-rolled strips, are processed through hot-rolling or cold drawing to form the required bar shapes, including flat bars, square bars, or round bars. This stage determines the bar’s dimensions, strength, and surface condition.
- Surface Preparation: Before galvanizing, the bars go through cleaning steps like degreasing, pickling, and rinsing to remove surface oils, oxide scale, and other impurities.
- Hot-Dip Galvanizing: The cleaned bars are fully immersed in molten zinc at approximately 450°C. A metallurgical reaction occurs between the zinc and steel surface, forming a dense zinc-iron alloy layer and a pure zinc layer that covers the entire surface to prevent corrosion.
- Cooling & Finishing: After galvanizing, the bars are rapidly cooled. Then, according to customer requirements, they undergo finishing processes such as:
- Inspection & Packaging: The final products undergo visual inspection and zinc coating thickness measurement. They are then packed according to specifications, ready for shipment.
FAQ
The zinc coating thickness typically ranges from 40 to 120 g/m², which varies based on customer requirements and applicable standards.
Yes, galvanized steel bars can be customized in terms of size, shape, zinc coating weight, and surface finish to meet specific project requirements.
Depending on environmental conditions and coating thickness, galvanized steel bars can last 20 years or more, with some lasting up to 50 years in optimal conditions.
