Gabion, Mesh, Fence Manufacturer in China Zhuoda Gabion Since 2007

Philippines DPWH standard gabion and mattress shall be constructed of double twisted steel hexagonal wire mesh and shall be supplied in various lengths, widths and heights. 

Gabion is double twisted wire mesh container of variable sizes, uniformly partitioned into internal cells, interconnected with other similar units, and filled with stones at the project site to form flexible, permeable, monolithic structures such as retaining walls, sea walls, channel linings, revetments and weirs for erosion control. 

Mesh opening of gabion shall be 80x100 mm.

Size of gabion: 2x1x0.5 m, 3x1x0.5 m, 4x1x0.5 m, 2x1x1 m, 3x1x1 m, 4x1x1 m.

The width, height and length of the gabion as manufactured shall not differ by more than ±5 percent from the ordered size prior to filling. 

Mattress is double twisted wire mesh container uniformly partitioned into internal cells with relatively small height in relation to other dimensions, having smaller mesh openings than the mesh used for wire mesh gabions. Mattresses are generally used for riverbank protection and channel linings.

Mesh opening of mattress shall be 60 x 80 mm.

Size of mattress: 4x2x0.3 m, 6x2x0.3 m.

The width and length of the revet mattress as manufactured shall not differ by more than ±5 percent, and the height shall not differ more than ±10 percent from the ordered size prior to filling. 

The wire used in the manufacture of double-twisted mesh for use in gabions and mattresses shall conform to the Specifications as shown below as appropriate for the style ordered.

• Style 1 double-twisted mesh shall be manufactured from zinc-coated steel wire conforming to Specification ASTM A641M, Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire, Class 3 coating, soft temper.
• Style 2 double-twisted mesh shall be manufactured from Zn-5Al-MM-coated steel wire conforming to Specification ASTM A856M, Standard Specification for Zinc – five (5) percent Aluminum-Mischmetal Alloy-Coated Carbon Steel Wire, Class 3 coating, soft temper.
• Style 3 double-twisted mesh shall be manufactured from the same type of metallic-coated steel wire as Style 1 with an additional PVC coating extruded into the metallic-coated steel wire.

The minimum size of the galvanized and PVC coated wire to be used in the fabrication of the wire mesh gabions and mattresses shall be as follows: 

Diameter tolerances for galvanized Wire to be used in the fabrication of wire mesh gabion and mattress shall be ± 0.10 mm. The nominal and the minimum thickness of PVC coating shall be 0.50 mm and 0.38 mm, respectively.

The tensile strength of zinc-coated wire used in the fabrication of wire mesh gabions and mattresses when tested in accordance with ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products, shall be as follows:

The minimum weight of zinc per unit area of uncoated wire surface shall be as follows: