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Galvanized Round Tubing
Galvanized Round Tubing
Galvanized round tubing, also called Galvanized CHS, is a circular hollow steel pipe that undergoes hot-dip galvanization to improve its durability and resistance to corrosion. It can be made as either Electric Resistance Welded or seamless, depending on specific needs. Its circular shape ensures even stress distribution, which boosts its resistance to deformation. The smooth interior surface reduces fluid resistance, making it suitable for transporting water, natural gas, oil, and other fluids. Additionally, its sturdy structure makes it a good choice for fence posts, which is why it’s also called Galvanized Fence Post Tubing.
The choice of galvanization for this pipe offers several advantages: it requires less maintenance, has lower repair costs, and enjoys a longer lifespan compared to uncoated steel. Furthermore, it provides initial cost benefits over other coating materials, making it a practical and economical option for various applications.
The choice of galvanization for this pipe offers several advantages: it requires less maintenance, has lower repair costs, and enjoys a longer lifespan compared to uncoated steel. Furthermore, it provides initial cost benefits over other coating materials, making it a practical and economical option for various applications.
Product Specifications
| Parameter | Description |
| Material | Carbon Steel (commonly ASTM A53, ASTM A500, GB/T 3091) |
| Shape | Round |
| Outer Diameter (OD) | Typically 10 mm to 630 mm (custom sizes available) |
| Wall Thickness | 1.0 mm to 12.5 mm (varies by diameter and standard) |
| Length | Standard lengths: 6 m or 12 m; Custom lengths available |
| Zinc Coating Thickness | Hot-dip galvanized: 40–100 μm; Electro-galvanized: 5–20 μm |
| End Types | Plain ends, beveled ends, threaded ends (customizable) |
| Applicable Standards | ASTM A53, ASTM A500, GB/T 3091, EN 10210 |
| Surface Finish | Hot-dip galvanized, electro-galvanized, smooth and uniform |
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Advantages
Excellent Corrosion Resistance
Durable zinc coating protects against rust and corrosion, ideal for outdoor and humid conditions.
Optimal Flow and Pressure Handling
Circular shape minimizes stress concentration, making it ideal for fluid transport and pressure vessels.
Superior Resistance to Torsion
Round cross-section resists twisting forces better, ideal for applications requiring rotational strength.
Long Service Life
Hot-dip galvanizing ensures lasting protection and reliable performance.
Applications
Structural: Scaffolding, handrails, guardrails, temporary supports.
Fencing: Posts and frames for various outdoor fences and gates.
Fluid Conveyance: Water and gas lines (non-potable/medium pressure), irrigation systems.
General Fabrication: Furniture frames (industrial style), gym equipment, display stands, agricultural structures (e.g., greenhouses).
Manufacturing Process
Galvanized tubes can be welded or seamless to form the base tube; either way, the overall process steps do not differ much.
- ERW Galvanized Round Tubing: Flat steel coil is shaped into a round form and welded using high-frequency welding. The finished ERW tube is then cleaned and hot-dip galvanized by immersing it in molten zinc for corrosion resistance, followed by cooling and inspection.
- Seamless Galvanized Round Tubing:A solid steel billet is heated and pierced to form a hollow tube, then rolled and sized to the desired round dimensions. This seamless tube is then cleaned and hot-dip galvanized in molten zinc for enhanced corrosion resistance, followed by cooling and inspection.
