80 mm × 2.5 mm Galvanized Square Tube
80 mm × 2.5 mm heavy-duty galvanized square tube for medium to heavy structural applications requiring high strength and toughness.

80 mm × 2.5 mm Galvanized Square Tube
80 mm × 2.5 mm heavy-duty galvanized square tube for medium to heavy structural applications requiring high strength and toughness.
Specifications
| Size | 80 × 80 mm |
|---|---|
| Wall Thickness | 2.5 mm |
| Standard | GB/T 3091 |
| Zinc Coating | Hot-dip galvanized, 300 – 600 g/m² |
| Length | 6 m |
| Surface | Fine galvanized, smooth texture |
Description
Product Overview This 80 mm × 2.5 mm thick galvanized square tube, with its robust performance and meticulous craftsmanship, is the preferred material for medium to heavy-duty applications.
The 80 mm square cross-section combined with 2.5 mm thick walls maximizes structural stability and load-bearing capacity, making it suitable for building frames, heavy-duty shelving columns, and large greenhouse main frames. The fine galvanizing treatment provides a uniform and dense zinc layer with outstanding aesthetics.
Applications - Building frames and structural columns - Heavy-duty shelving and racking systems - Large greenhouse main frames - Municipal engineering railings - Industrial warehouse shelving
Galvanizing Process
Our galvanized square tubes undergo a meticulous hot-dip galvanizing process. The production chain includes: 1) Alkaline degreasing at 80°C to remove fabrication oils; 2) Hydrochloric acid pickling to remove mill scale and rust; 3) Fluxing in zinc ammonium chloride solution; 4) Immersion in molten zinc bath at 445–455°C; 5) Controlled cooling and inspection.
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