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Galvanized Pipe
1.Product Overview
Galvanized steel pipes are carbon steel pipes coated with a protective layer of zinc to prevent rust and corrosion. They are widely used in construction, plumbing, fencing, and industrial applications due to their durability and cost-effectiveness.
Key Features:
Corrosion Resistance: Zinc coating protects against rust and extends service life.
High Strength: Suitable for structural and pressurized applications.
Easy Installation: Compatible with threading, welding, and mechanical joints.
Cost-Effective: Lower maintenance costs compared to non-coated pipes.
2. Types of Galvanized Pipes
(1) Hot-Dip Galvanized (HDG) Pipes
Process: Submerged in molten zinc (450°C) for a thick, durable coating (≥85µm).
Standards: ASTM A53, BS 1387, EN 10240
Applications: Water supply, gas distribution, outdoor structures.
(2) Electro-Galvanized (EG) Pipes
Process: Electroplated with a thinner zinc layer (5–25µm).
Standards: ASTM A153, ISO 2081
Applications: Indoor plumbing, electrical conduits, lightweight frameworks.
3.Technical Specifications
|
Parameter |
Specification |
|
Material |
Carbon Steel (Q195, Q235, ASTM A53) |
|
Zinc Coating |
40–300 g/m² (HDG), 5–25µm (EG) |
|
Diameter Range |
½" to 24" (DN15–DN600) |
|
Wall Thickness |
SCH 10, SCH 40, SCH 80 (or custom) |
|
Length |
6m, 12m (or cut-to-size) |
|
Pressure Rating |
Up to 16MPa (varies by schedule) |
|
Temperature Range |
-20°C to 300°C (HDG) |
4. Applications
✔ Plumbing & Water Supply (potable water, drainage)
✔ Construction (scaffolding, handrails, structural supports)
✔ Fencing & Guardrails (high weather resistance)
✔ Oil & Gas (low-pressure pipelines)
✔ Electrical Conduits (EG pipes for wiring protection)
5. Advantages vs. Alternatives
|
Feature |
Galvanized Pipe |
Stainless Steel |
PVC Pipe |
|
Cost |
Low |
High |
Very Low |
|
Strength |
High |
Very High |
Low |
|
Corrosion Resistance |
Good (depends on coating) |
Excellent |
Poor (UV-sensitive) |
|
Installation |
Welding/Threading |
Welding |
Gluing/Solvent |
6. Quality Standards & Certifications
ISO 9001: Quality management
ASTM A53/A123: HDG pipe standards
RoHS Compliance: Lead-free coating options
Third-Party Testing: Salt spray test (ASTM B117), coating adhesion test
7. Maintenance & Lifespan
Lifespan: 20–50 years (depends on environment)
Maintenance: Periodic inspection for coating damage; touch-up with zinc-rich paint if needed.
Do Not Use For: High-temperature steam (>300°C) or highly acidic/alkaline fluids.
8. Packaging & Shipping
Bundled with steel straps
Plastic end caps to prevent damage
Custom labeling (size, grade, standards)
9.Why Choose Our Galvanized Pipes?
✅ Competitive Pricing – Large-scale production reduces costs
✅ Custom Sizing – Cut, threaded, or grooved per request
✅ Fast Delivery – Stock available in multiple grades and sizes
Contact us for quotes, technical data sheets (TDS), or samples!
Galvanized Pipe Customer Evaluation
Galvanized Pipe FAQ
-
What is galvanized pipe mainly used for?
It is widely used in water supply, fire fighting, gas transportation, electrical conduit, and general construction piping.
-
What is the difference between hot-dip galvanized and electro-galvanized pipes?
Hot-dip galvanized has a thicker coating and better anti-corrosion performance; electro-galvanized has a thinner layer and is mostly used for indoor light applications.
-
Can galvanized pipe be used for drinking water supply?
Yes, but in many regions, plastic or stainless steel pipes are more recommended for long-term drinking water systems.
-
How long is the service life of galvanized pipe?
Under normal environment, it can be used for 10–20 years; hot-dip galvanized type can last longer.
Apr 16,2026
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