Zinc Coated Galvanized Steel Pipe
Zinc Coated Galvanized Steel Pipe
Specification
| Zinc Coating Thickness | 65–300 μm (Standard ≥85 μm) |
| Zinc Coating Weight | ≥500 g/m² (Standard ≥600 g/m²) |
| Coating Uniformity | Copper Sulfate Test ≥4 cycles without iron exposure |
| Coating Adhesion | No peeling in hammer impact test |
| Tensile Strength | 375–500 MPa |
| Yield Strength | ≥235 MPa |
| Elongation | ≥20% |
| Bending Test | 180° bending without cracking |
| Outer Diameter Range | DN15–DN600 (21.3–610 mm) |
| Wall Thickness Range | 1.0–20 mm |
| Pipe Types | Round Pipe, Square Pipe, Rectangular Pipe, Oval Pipe |
| Compliance Standards | Chinese Standard: GB/T 3091-2015 American Standard: ASTM A53 / ASTM A123 European Standard: EN 10240 / EN 10305 |
| Surface Condition | Uniform zinc spangle, slight local color differences and repair marks allowed |
| Internal/External Coating | Fully galvanized inside and outside (can be combined with plastic lining) |
| Connection Methods | Threaded, Flanged, Grooved, Welded, Press-fit |
| Length Specifications | 6m (fixed length), 12m (double length), custom cutting available |
| Packaging Forms | Bundled (with anti-rust film/paper), bare packing, palletized, customer-specified |
| Application Scope | Building structures, water transmission projects, fire protection pipelines, HVAC systems, photovoltaic supports, transportation facilities, etc. |
| Corrosion Resistance Life | ≥20 years in general environments, ≥10 years in industrial/marine environments (depending on coating thickness and environment) |
Core Advantages of Galvanized Steel Pipe
Why Choose Us – End-to-End Value Assurance from Source to Application
- Scientific-Grade Material Control
Utilizes low-carbon steel billets from leading mills (e.g., Baosteel/Shougang), with material certificates for every batch
Zinc ingot purity ≥99.995% (exceeding the national standard requirement of 99.9%)
Trace element control: Lead content ≤0.003%, Cadmium content ≤0.001%
- After-Sales Guarantee System
30-year quality warranty (industry standard is 15-20 years)
Complimentary anti-corrosion status inspection twice annually
48-hour on-site response for quality issues
- Certifications and Honors
ISO 9001:2015 Quality Management System Certification
ISO 14001 Environmental Management System Certification
National "Green Factory" Recognition
15 National Invention Patents in Galvanizing Technology
Strategic Supplier to 3 Fortune Global 500 Engineering Companies
FAQ
1. What is it?
A steel pipe coated with zinc to prevent rust.
2. Where is it used?
Old water & gas lines (pre-1970s)
Fire sprinkler systems
Fencing & handrails
Scaffolding & structural frames
3. What are the pros?
Very strong and durable
Good for outdoors & high heat
Long lifespan
4. What are the cons?
Can rust from the inside out, causing low water pressure and discoloration
Heavy and hard to install
Older pipes may contain lead
5. How to spot it?
Dull silver-gray color
Rough, bumpy texture
A magnet sticks to it
Very heavy compared to plastic pipes
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