Long-lasting rust inhibitor: One-time treatment, worry-free for ten years.
Double protective layer: The total thickness of the zinc-iron alloy layer (10%-20% of the total thickness) and the pure zinc layer (80%-90% of the total thickness), formed through hot-dip galvanizing, can reach 85–150 micrometers—significantly greater than the thickness of a cold-galvanized layer (10–30 micrometers). This double-layer structure effectively prevents air, moisture, and corrosive media from coming into contact with the base material.
Sacrificial anode protection: If there is even a minor scratch on the surface, the zinc will corrode before the steel, thereby protecting the base material from rust through an electrochemical reaction and eliminating the need for additional repairs.
Life expectancy: Under normal external conditions, the service life can range from 15 to 30 years. In a high-salt-spray environment along the coast, the service life can range from 10 to 20 years—equivalent to 3 to 5 times the service life of conventionally coated sheets.
2. High strength and stability: Achieving a balance between corrosion resistance and load-bearing capacity
Advantages of the base material: Made from high-quality steel sheets such as Q235 and Q355, the tensile strength of the base material itself is ≥375 MPa (Q235) and ≥470 MPa (Q355), meeting the load-bearing requirements of the project.
The process does not negatively affect performance: Although the hot-dip galvanizing process involves high temperatures, the temperature and duration are precisely controlled, ensuring that the mechanical properties of the base material remain unchanged and guaranteeing that the load-bearing capacity of the sections is not affected.
Precise dimensions: The formed features are first precisely calibrated in terms of dimensions and then undergo galvanizing treatment. The galvanized layer is applied uniformly and does not affect the accuracy of the assembly (such as the alignment of screw hole positions).
3. Low maintenance cost: Reduced subsequent investments
No need for frequent maintenance: After a single galvanizing process, there’s no need to repaint it every one to two years as is the case with conventional structures. It’s sufficient only to periodically clean the surface of dust, which reduces maintenance costs by more than 80%.
Reduced risk of failure: It avoids problems such as structural degradation and fracture caused by corrosion, thereby reducing the frequency of engineering maintenance operations and failure-related losses.
High cost performance over the entire lifecycle: Although the initial purchase cost is 10% to 20% higher compared to conventional segments, when considering a service life ranging from 15 to 30 years, the total lifecycle cost does not exceed one-third to one-half of the cost of conventional segments.
4. Environmental protection and compliance: in line with modern engineering requirements
No secondary pollution: The galvanized layer is stable and free of volatile harmful substances. No rust residues fall off during use, and it will not pollute the environment.
Recyclable: After dismantling the components, both the steel and the zinc coating can be recycled and processed again, aligning with the concept of a circular economy.
Compliance with Standards: Strict adherence to national standards such as GB/T 13912-2022 “Hot-Dip Galvanized Steel Sheets and Strips” and GB/T 2694-2018 “Technical Specifications for the Manufacture of Transmission Line Towers,” with all indicators—including zinc coating thickness and adhesion—meeting the required standards.