Galfan gabion is a kind of Galfan or (Zinc 5%- Aluminum-Mischmetal Alloy-Coated) coated steel double twisted woven mesh gabion product. Galfan offers a more homogenous, ductile and smoother coating than galvanized zinc. The result is that the galfan is less affected by abrasion. Galfan coating offers up to 3 times better corrosion protection than standard zinc coating in salt spray test, and up to 2 times better corrosion protection than standard zinc coating in atmosphere test. Meantime compare with standard galvanized coating, galfan coating offers better sacrificial protection.Galfan gabion uses the same wire diameter or gauge as the galvanized gabion. In corrosive environments, galfan gabion used less steel wires than galvanized gabion and PVC coated gabion. The longevity of the gabion should be considered more when in a corrosive environment. Therefore galfan coated gabion is widely utilized when corrosion is the predominant factor.
Features
1. Galfan offers a more homogenous, ductile and smoother coating than does galvanized zinc. The result is that the galfan is less affected by abrasion.
2. Galfan coating offers up to 3 times better corrosion protection than standard zinc coating in salt spray test, and up to 2 times better corrosion protection than standard zinc coating in the SO2 Atmosphere test. Galfan offers better sacrificial protection of the steel wire than standard galvanized zinc.
3. Galfan gabions use the same wire diameters as the galvanized gabions. This is an advantage in corrosive environments over PVC coated gabions that have a reduced steel wire diameter as compared to the galvanized gabions. The result is a better corrosion protection coating than the galvanized zinc or the PVC coated gabions.
4. The corrosive resistance of the gabion wire is directly related to the longevity of the gabion wire. It is recommended that Galfan Coating be utilized when corrosion is the predominant factor for determining the expected life span of a gabion structure.
Specification
1. Mesh type: 8 x 10 2. Mesh wire: 3mm diameter (BS EN 10218-2 & BS EN 10223-3) 3. Selvedge wire: 3.9mm diameter (BS EN 10218-2 & BS EN 10223-3) 4. Corrosion protection: galfan galvanised (95% Zinc + 5% Aluminium Alloy + Mischmetals) coated to BS EN 10244-2. 5. Jointing: all joints and connections shall be formed with continuous 2.2mm Galfan coated lacing wire and/ or high tensile 3mm diameter Galfan coated C rings. 6. Diaphragms: fixed at 1.0m c/c along gabion length for units longer than 1.5mSTANDARD SIZES (NOMINAL)Length (m)Width (m) Height (M)1 1 11.5 1 0.51.5 1 12 2 0.52 1 1