Worldwide Pipe Meets Industry Standards
English Views: 0 Author: Site Editor Publish Time: 2025-07-28 Origin: Site
In the fields of modern architecture and industrial manufacturing, pre-galvanized hollow section steel pipes have gradually become an essential structural material, thanks to their excellent corrosion resistance, superior mechanical strength, and outstanding machinability. They demonstrate particularly remarkable performance in engineering projects with high requirements for durability and oxidation resistance.
Ⅰ. What is Pre-Galvanized Hollow Section Steel Pipe?
Pre-galvanized hollow section steel pipe is a hollow-section steel product made from pre-galvanized steel strips through cold bending and high-frequency welding technology. Its cross-section can be square or rectangular and is widely used in construction structures, mechanical manufacturing, solar panel supports, and other industries.
Unlike traditional hot-dip galvanized pipes, pre-galvanized pipes undergo zinc coating treatment before pipe forming. After welding, the surface is repaired with metal spraying to restore the zinc layer, ensuring structural strength while providing excellent corrosion resistance.
II. Advantages and Features of Pre-Galvanized Hollow Section Steel Pipes
1. Diverse Material Grades and Specifications
Pre-galvanized hollow section steel pipes are typically made from low-carbon structural steels such as Q195 and Q235. They are available in a wide range of sizes, from 12x12mm up to 500mm, with wall thicknesses ranging from 0.6mm to 20mm, catering to various application scenarios. Customization is also available to meet specific customer requirements.
2. Strict Surface Treatment Standards
A metallization process (e.g., spraying molten zinc wire) is employed for zinc replenishment, ensuring that the seam areas achieve the same level of protective performance as the rest of the pipe. The internal weld seams, however, are generally left untreated to maintain their original state.
The total zinc coating weight on both the inner and outer surfaces is controlled between 0.90 oz/sq.ft and 1.20 oz/sq.ft, effectively preventing oxidation and corrosion of the steel in humid, acidic, or alkaline environments.
Ⅲ. The Wide Range Applications of Pre-Galvanized Hollow Section
Construction Engineering: Used for structural components such as steel frames, support beams, and stair railings, offering advantages like high strength and easy installation.
Machinery and Equipment Manufacturing: Employed in equipment supports, welded components, and transmission structures, enhancing overall structural stability.
Transportation and Energy Projects: Applications include guardrail systems and photovoltaic (PV) mounting systems.
IV. Conclusion
With the continuous advancement of global infrastructure construction and manufacturing industries, pre-galvanized hollow steel pipes have demonstrated remarkable performance across various fields due to their comprehensive advantages. Meta Company is committed to the research, development, and supply of high-quality steel pipe products. We welcome inquiries and collaboration from clients worldwide to jointly create more robust, durable, and sustainable building solutions for the future.
