Hot-dipped galvanized gabion boxes are modular stone-filled wire mesh containers used for retaining walls, slope stabilization, riverbank protection, and erosion control. The double-twist hexagonal mesh provides exceptional structural integrity, while the heavy galvanized coating ensures long-term corrosion protection in outdoor environments.
## Construction Principle
Gabion boxes work on a simple but effective engineering principle:
- **Rock-Filled Mass**: The wire mesh basket is filled with hard, durable stone (typically 100-200mm size)
- **Flexibility**: The double-twist mesh allows the structure to settle and conform to ground movement without cracking — unlike rigid concrete walls
- **Permeability**: Stone fill allows water to flow through freely, eliminating hydrostatic pressure build-up behind retaining walls
- **Mass Weight**: A 2x1x1m gabion filled with typical stone weighs approximately 3500-4000 kg, providing substantial mass for stability
## Key Advantages
- **Structural Flexibility**: Absorbs differential settlement without structural failure. Ideal for soft or variable foundation conditions.
- **Heavy Galvanizing**: >=250g/m2 zinc coating (Class 3 equivalent). Service life 20-30 years in normal outdoor conditions.
- **Permeable Structure**: Free drainage eliminates hydrostatic pressure, reducing risk of wall failure common in solid retaining structures.
- **Environmental Integration**: Stone fill promotes vegetation growth and provides habitat for aquatic and terrestrial organisms.
- **Cost-Effective**: Uses locally available stone fill. No concrete curing time — immediate load-bearing upon installation.
- **Modular Design**: Standard 2x1x1m baskets interlock and stack. Complex geometries (curved walls, stepped walls, corners) easily achieved.
- **Aesthetic Appeal**: Natural stone appearance blends with landscape. No painting or surface treatment needed.
## Technical Specifications
| Parameter | Value |
|-----------|-------|
| Dimensions | 2.0m x 1.0m x 1.0m (L x W x H) |
| Mesh Type | Double-twist hexagonal woven |
| Mesh Aperture | 80mm x 100mm |
| Wire Diameter | 2.5mm (selvedge 3.0mm) |
| Material | Q195 Low Carbon Steel Wire |
| Tensile Strength | 370-540 N/mm2 |
| Zinc Coating | >=250g/m2 (heavy hot-dipped) |
| Internal Diaphragms | 1 (divides basket into 2 cells) |
| Selvage Wire | 3.0mm (edge reinforcement) |
| Lacing Wire | 2.2mm (for assembly) |
| Connection | Spiral lacing or C-rings |
| Tolerances | +/-5% mesh opening, +/-0.5mm wire diameter |
| Standard | EN 10223-3, ASTM A974, YB/T 4193 |
| Certification | ISO 9001, CE |
## Standard Dimensions (Available)
| Model | Dimensions (L x W x H) | Volume | Internal Cells |
|-------|----------------------|--------|----------------|
| G-2x1x1 | 2.0m x 1.0m x 1.0m | 2.0 m3 | 1 |
| G-3x1x1 | 3.0m x 1.0m x 1.0m | 3.0 m3 | 2 |
| G-4x1x1 | 4.0m x 1.0m x 1.0m | 4.0 m3 | 3 |
| G-2x1x0.5 | 2.0m x 1.0m x 0.5m | 1.0 m3 | 1 |
| G-1x1x1 | 1.0m x 1.0m x 1.0m | 1.0 m3 | 0 |
## Installation Process
1. **Foundation Preparation**: Level and compact the base. Optional geotextile filter layer.
2. **Basket Assembly**: Unfold flat-packed basket. Fold up sides, lace corners with provided wire.
3. **Placement**: Position assembled basket at installation site. Connect adjacent baskets with lacing wire.
4. **Stone Filling**: Fill with hard durable stone (100-200mm). Hand-pack to minimize voids. Slight overfill to allow for settlement.
5. **Lid Closure**: Fold lid over, stretch tight, and lace to top edges of basket at 100mm intervals.
6. **Stacking**: For multi-tier walls, place next layer offset by half-basket width for interlocking bond.
## Applications
- **Retaining Walls**: Highway and railway embankments, residential development terracing
- **Riverbank Protection**: Anti-scour protection along rivers, canals, and streams
- **Slope Stabilization**: Erosion control on cut slopes and embankments
- **Bridge Abutments**: Scour protection and approach fill retention
- **Coastal Defense**: Breakwaters, groynes, and seawall toe protection
- **Noise Barriers**: Stone-filled gabion walls absorb highway noise
- **Landscaping**: Decorative walls, garden features, and property boundaries
## Packaging & Delivery
- **Packaging**: Flat-packed bundles (10-20 baskets per bundle), strapped with steel bands. Lacing wire coiled and included.
- **Container Loading**: 20ft GP ~ 500-800 baskets; 40ft HQ ~ 1000-1600 baskets (flat-packed)
- **Lead Time**: 5-12 days for standard specifications; 12-20 days for custom dimensions
- **Shipping**: FOB Tianjin / CIF / DDP
## Quality Assurance
- ISO 9001:2015 certified manufacturing process
- CE certified (EN 10223-3 compliance)
- Zinc coating weight test per batch (ASTM A90/A90M)
- Tensile strength test per batch
- Mesh dimension verification
- Selvage wire diameter verification
- SGS/BV third-party inspection available