Galvanized Square Tubes

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
Product Details

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

Manufacturing

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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