Cangzhou Hengtai Zeyuan Anti-corrosion Pipeline Co., Ltd.
Hot-dip Galvanized Steel Pipe
📌 Product Description
Hot-dip galvanized steel pipe is a steel pipe that has been coated with a layer of zinc through the process of hot-dip galvanization. This process involves immersing the steel pipe into a bath of molten zinc at approximately 450°C, forming a metallurgical bond between the zinc coating and the steel substrate. The resulting zinc layer provides excellent corrosion resistance and extends the service life of the pipe in a wide range of environments.
Hot-dip galvanized pipes are available in both seamless and welded forms, and are widely used in applications where durability, corrosion resistance, and a clean, finished appearance are required.
⭐ Key Features
✅ Superior Corrosion Resistance
The zinc coating acts as a sacrificial layer that protects the base steel from rust and corrosion, even when the coating is scratched.
✅ Strong Mechanical Properties
Made from high-quality carbon steel, these pipes offer good tensile strength and load-bearing capacity.
✅ Durable Zinc Coating
The hot-dip process results in a uniform, tightly bonded zinc layer that adheres strongly to the surface and offers long-lasting protection.
✅ Cost-Effective Longevity
With minimal maintenance, hot-dip galvanized pipes offer a low life-cycle cost compared to painted or untreated steel pipes.
✅ Attractive Appearance
The silver-gray surface provides a clean, industrial aesthetic suitable for exposed use.
📐 Specifications
| Parameter | Description |
|---|---|
| Outer Diameter | 1/2" – 12" (DN15 – DN300), or customized |
| Wall Thickness | 1.5mm – 12mm |
| Length | 5.8m, 6m, 12m, or customized as required |
| Steel Grades | Q195, Q235, Q345, S235, S275, ASTM A53/A500, BS EN 10255, etc. |
| Zinc Coating | 200g/m² – 600g/m² (can be customized) |
| Pipe Ends | Plain, beveled, or threaded with plastic caps or couplings |
| Surface Finish | Hot-dip galvanized (shiny or matte), with or without oil coating |
| Manufacturing Types | Welded (ERW), Seamless |
| Tolerances | According to API, ASTM, or customer requirements |
📚 Standards Complied
| Standard | Description |
|---|---|
| ASTM A53 / A123 | American Standard for galvanized steel pipes |
| BS 1387 | British Standard for galvanized welded steel tubes |
| EN 10240 | European standard for zinc coating of steel tubes |
| ISO 65 | International standard for galvanized steel tubing |
| DIN 2444 | German standard for hot-dip galvanized steel pipes |
🏗️ Main Applications
Construction & Infrastructure
Structural supports, guardrails, scaffolding, greenhouse frames, roofing frameworks
Water Supply & Drainage Systems
Potable water pipelines, sewage lines, irrigation pipes
Gas & Air Transmission
Natural gas distribution, compressed air systems
Fire Protection Systems
Sprinkler pipe networks in residential, commercial, and industrial buildings
Fencing & Agricultural Use
Fencing posts, greenhouse poles, livestock shelters
Communication & Utility Structures
Electrical conduit, telecom towers, solar mounting frames
🛡️ Advantages Compared to Other Pipes
Longer lifespan (up to 50 years in dry environments)
Self-healing protection at scratches (zinc oxidation protection)
Suitable for both indoor and outdoor use
No painting required – maintenance-free in most applications
Excellent for welding, cutting, and threading
🎨 Surface Treatment Options
Hot-dip Galvanized (HDG): Immersed in molten zinc for full coverage protection
Pre-galvanized (PG): Zinc coating applied to steel strip before forming
Clear/Anti-rust Oil Coating: Applied to prevent white rust during storage
Passivation: Chromate treatment to enhance corrosion resistance and appearance
Factory Tour
Enterprise Qualification
Keywords
Hot-dip Galvanized Steel Pipe
Contact Us
Classification
Hebei Hengtai Group, 338 National Road North, Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province
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