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Galvanized Steel Pipe & Tube – Durable, Anti-Rust & Ready to Use
High-strength galvanized pipes in various shapes and coatings. Widely used in infrastructure, fencing, framing, and fluid transport. Custom sizes and export-ready inventory available.
What Are Galvanized Steel Pipes & Tubes?
Galvanized steel pipes are steel tubes coated with a protective layer of zinc to prevent corrosion and extend lifespan.
We supply:
Round Pipe – for fluid transport, scaffolding, poles
Square & Rectangular Tubes – for frames, fences, construction
Pre-Galvanized & Hot-Dip Galvanized Options
Welded (ERW) & Seamless options
These pipes are valued for cost-efficiency, rust resistance, and versatile usage in agriculture, buildings, greenhouses, machinery, and public infrastructure.
Products Link
Optional product specifications
| Property | Details |
|---|---|
| Base Material | Q195, Q235, Q345, DX51D, SGCC |
| Coating Method | Hot-dip galvanized (HDG) or pre-galvanized |
| Zinc Coating | Z60–Z275 g/m² |
| Pipe Shapes | Round / Square / Rectangular |
| Outer Diameter | Round: 21.3–406mm / Square: 20x20–200x200mm |
| Wall Thickness | 0.3mm – 12mm |
| Length | 5.8m, 6m, 12m or custom |
| Standard | ASTM A53 / BS1387 / EN 10219 / JIS G3444 |
* Threaded ends, grooved pipe, slotted holes, and plastic cap protection available.
Galvanized pipe is a type of steel pipe with a zinc coating. Through hot-dip galvanizing or electro-galvanizing processes, its corrosion resistance and service life are significantly improved. The following is a detailed analysis of its performance characteristics and applications.
I. Performance Characteristics
Corrosion Resistance
The zinc coating forms a zinc-iron alloy layer, effectively isolating oxygen and moisture, preventing the base steel from rusting, making it suitable for humid or chemically resistant environments.
Zinc acts as a sacrificial anode, preferentially corroding even if the surface is damaged, continuously protecting the steel pipe.
Mechanical Properties
The base material is carbon steel, possessing both high strength and ductility, capable of withstanding significant pressure and mechanical loads.
The zinc coating enhances surface hardness, reducing the risk of wear and scratches.
Durability and Economy
Service life can be 3-5 times that of ordinary steel pipes, with low maintenance costs.
Initial cost is lower than stainless steel pipes, offering excellent value for money.
Process Versatility
Hot-dip galvanizing provides a thick, strongly adhered coating, suitable for outdoor use; electro-galvanizing provides a thinner coating, suitable for precision components.
II. Main Applications
Construction Industry
Water Supply and Drainage Systems: Used for cold water pipes and fire-fighting pipelines to ensure water quality safety.
Structural Support: Used as scaffolding, guardrails, and door/window frames, providing stable load-bearing capacity.
Industrial Applications
Fluid Transportation: Transporting low-pressure fluids such as coal gas, oil, and natural gas, such as oil well pipes and pipelines.
Equipment Components: Used for chemical heaters, condensers, and mine tunnel supports.
Infrastructure
Transportation Engineering: Support structures for highway bridges and railway vehicles, resistant to environmental corrosion.
Agricultural Facilities: Greenhouse frames and irrigation pipes, suitable for long-term outdoor use.
Special Applications
Power and Communication: Cable trays and utility pole crossbars, ensuring electrical safety.
Marine Engineering: Piles for trestle bridges and oil pipelines, resisting seawater corrosion.
Galvanized pipes, with their superior corrosion resistance, mechanical strength and wide applicability, have become the preferred material in the construction, industrial and infrastructure sectors, especially in humid or corrosive environments.
Processing & Packaging
Pipe threading & end capping
Laser cutting or slotted holes
Oiled or dry finish
Bundled with steel straps and plastic caps
Wrapped with waterproof woven film for export
Why Choose Xishang?
- Full range of pipe types in GI finish
- ERW welded pipes in all common sizes
- Slitting, cutting, perforating, bending available
- Low MOQ: starting from 3 tons
- Surface options: plain, oiled, chromated
- Anti-corrosion treatment & cap sealing supported
Frequently Asked Questions
Q1: What's the lifespan of hot dipped galvanized pipe outdoors?
A:
With Z275 coating, GI pipes can last 20–30 years in open-air environments.
Q2: Do you offer square or rectangular galvanized tubing?
A:
Yes, we supply all three shapes: round, square, and rectangular.
Q3: Are your pipes suitable for water or gas lines?
A:
Yes, our round pipes meet structural and fluid transport standards.
Q4: Can you offer customized lengths or hole punching?
A:
Absolutely. We offer cut-to-length and hole slotting per your drawing.
Q5: Do you provide seamless galvanized pipes?
A:
Yes. For high-pressure or non-welded needs, seamless GI pipe is available upon request.
