2.7mm HDP Galvanized Double-Twist Gabion Stone Wall Cage for River Protection

Product Specification

2.7mm HDP Galvanized Double-Twist Gabion Stone Wall Cage for River Protection

This 2.7mm HDP (Hot-Dip Galvanized) double-twist gabion stone wall cage is a specialized protective structure engineered for riverbank anti-erosion and aquatic ecosystem preservation. Crafted from high-quality low-carbon steel wire, its core strength lies in the hot-dip galvanization process—the wire is submerged in molten zinc at ~450°C to form a dense, uniform coating (≥200g/㎡) that delivers triple corrosion protection: a physical barrier isolating steel from moisture, cathodic protection where zinc sacrificially corrodes to shield exposed steel, and a zinc patina that slows corrosion to 1/30th the rate of uncoated steel . This makes it resistant to long-term immersion in river water, sediment abrasion, and mild aquatic salinity, ensuring a service life of over 30 years in harsh riparian environments.

The mechanical double-twist weaving technique forms a rigid hexagonal mesh structure that eliminates weak welding points. With 2.7mm thick wire (meeting EN10223-3 standards for riparian structures ), the cage withstands high-velocity water impacts (≥2m/s) and lateral soil pressure without deformation—critical for sections of rivers with steep slopes (1:1.2-1:1.5) or turbulent flow . The mesh is optimized for river protection: 80×100mm apertures securely hold 80-200mm durable block stones (compressive strength ≥30MPa) while maintaining 30-40% porosity . This balance prevents stone loss during floods and enables water permeability—river flow passes through gaps without building destructive hydrostatic pressure, while trapping sediment to naturally restore riverbank soil.

Designed for on-site efficiency, the cage adopts a modular structure (typically 2×1×1m, adaptable to terrain) that folds flat for transport, reducing logistics space by 60% compared to assembled units . Installation requires no heavy equipment: workers unfold the cage, splice adjacent units with galvanized binding wire (10-15cm spacing, double-twist knots), and fill with graded stones (large stones for exterior stability, small gravel for gap filling) . The interlocked cages form a monolithic barrier that adapts to minor foundation settlement, avoiding cracks common in rigid concrete revetments.

Beyond protection, it supports ecological restoration: mesh gaps allow aquatic plants (e.g., reeds, sedges) to root through, gradually forming a "vegetation-gabion-soil" ecosystem . This blends the structure with natural river landscapes, preserves aquatic habitat connectivity, and addresses the "hard isolation" flaw of traditional concrete bank protection—aligning with modern river governance principles of "engineering protection + ecological harmony".

1. Superior HDP Galvanized Corrosion Resistance: 2.7mm low-carbon steel with hot-dip zinc coating (≥200g/㎡); triple protection mechanism withstands river water, sediment, and salinity, service life over 30 years .
2. Rigid Double-Twist Mesh: Hexagonal woven structure (no welds) resists ≥2m/s water impact and soil pressure; meets EN10223-3 standards for riparian stability .
3. River-Optimized Design: 80×100mm apertures fit 80-200mm high-strength stones; 30-40% porosity balances anti-erosion and permeability, preventing flood-induced damage .
4. Modular & Cost-Effective Installation: Foldable for transport (saves 60% space); manual assembly with galvanized 绑丝,no heavy machinery—cuts on-site construction time by 40% .
5. Eco-Friendly Restoration: Mesh gaps enable plant rooting; forms "vegetation-gabion" ecosystem, preserves aquatic habitats, and integrates with natural landscapes .

Gabion Basket Technical Data as Followed:

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