ASTM A123 is the Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.
This specification directly applies to the manufacturing of hot dip galvanised pipe, establishing comprehensive requirements for the galvanizing process , including minimum coating thickness, coating weight, finish quality, and adherence to the base steel.
This specification is widely applied to steel shapes, plates, bars, and assembled fabrications intended for corrosion resistance through hot-dip galvanizing.
(For hot dip galvanised pipe specifically, these requirements ensure superior corrosion resistance through the hot-dip galvanizing process. The rigorous standards guarantee that every hot dip galvanised steel pipe delivers consistent performance and long-term durability in demanding applications.)
ASTM A123 hot galvanized steel pipe and tubes Specification
| Property | Description |
| Scope | Hot-dip zinc coating on iron and steel products |
| Coating Type | Zinc (by hot-dip process) |
| Materials Covered | Structural steel, iron castings, bars, plates, pipes, and fabricated assemblies |
| Coating Thickness | Based on steel thickness (ranging from 45 µm to over 100 µm) |
| Test Methods | Coating thickness (magnetic or weight method), visual inspection |
| Finish | Smooth, free from blisters, flux deposits, and uncoated areas |
| Adherence | Coating must withstand handling and fabrication stresses |
Coating Thickness Requirements (Average)
| Material Category | Steel Thickness (mm) | Minimum Average Coating Thickness (µm) |
| Plate, Strip, Bar | ≥ 6.0 | 85 |
| Structural Shapes | ≥ 6.0 | 85 |
| Pipe and Tubing | ≥ 5.0 | 75 |
| Wire Products | Varies | 50 to 100 |
Equivalent Standards to ASTM A123
| Standard | Region/Organization | Description |
| ISO 1461 | International | Hot-dip galvanized coatings on fabricated iron and steel articles |
| EN ISO 1461 | Europe | European version of ISO 1461 |
| CSA G164 | Canada | Hot dip galvanizing of irregularly shaped articles |
| AS/NZS 4680 | Australia/New Zealand | Hot-dip galvanized (zinc) coatings on fabricated ferrous articles |
| JIS H 8641 | Japan | Hot-dip zinc coatings on steel products |
This Galvanized Steel Pipe provides exceptional rust protection for harsh environments through effective sacrificial anode defense.
The Hot-Dip Galvanized Steel Pipe offers an extended service life and robust resistance to physical damage, thanks to its tough zinc coating.
Our Hot-Dip Galvanized Pipe guarantees reliable coating thickness and adhesion by strictly meeting the ASTM A123 standard.
This Galvanized Steel Pipe is the ideal solution for challenging uses like structural frameworks and high-pressure systems.
1. Project-Ready Galvanized Pipes with Full Customization
We supply precision-processed hot dip galvanised pipes with complete customization services
Offer accurate cutting to your specified lengths and tolerances
Provide custom threading services for secure connections
Execute precise drilling and fabrication according to your technical drawings
Deliver hot galvanized pipe solutions that integrate seamlessly into your projects
2. Certified Quality Assurance
Every galvanized pipe steel undergoes rigorous testing and quality control
Provide complete EN 10204 3.1 Mill Test Certificate with every shipment
Arrange third-party witnessed 3.2 MTCs for critical applications
All hot dip galvanised pipes strictly comply with international standards
Comprehensive after-sales support ensures complete project satisfaction
3. Reliable Technical Support
Technical team provides professional guidance on galvanized pipe steel applications
Offer customized solutions for specific project requirements
Ensure optimal performance of all hot galvanized pipe products
Maintain consistent communication throughout project execution
Deliver technical documentation and support services
Our commitment to quality customization and certified excellence makes us your trusted partner for hot dip galvanised pipe requirements across various industrial applications.
Hainan Yuan Steel Pipe Supply Chain Co.,Ltd is one of the leading ASTM A123 Hot Dip Galvanized Steel Pipe distributors.
If you want to buy or import best high-quality ASTM A123 Hot-Dip Galvanized Steel pipe, please kindly feel free to contact us.
