1. Overview

The 3-axle U-type dump trailer is specifically designed for transporting and dumping bulk materials such as sand, gravel, coal, ores, and construction waste. The unique U-shaped body provides better load distribution, faster dumping, and reduced material sticking compared to traditional rectangular dump trailers. Built with high-strength steel and a reinforced subframe, this trailer is ideal for mining, construction, and quarry operations.

2. Key Features

• U-shaped body – Smooth interior walls prevent material sticking and improve dumping efficiency

• High-strength steel construction – Hardox or equivalent wear-resistant steel for extended service life

• 3 axles – 13T–16T per axle, total GVW 40–48 tons

• Heavy-duty suspension – Mechanical leaf spring (standard) or air suspension (optional)

• Powerful hoist system – Front-mounted telescopic cylinder (multi-stage) for stable, fast lifting

• Reinforced subframe – Distributes load evenly and protects truck chassis

• Double-acting tailgate – Opens automatically via cables or hydraulics; can be hinged or removed

• ABS braking system – Standard, with EBS optional

• Tarp system ready – Manual or automatic tarp mounting brackets included

3. Specifications

4. Applications

5. Configuration Comparison

6. Buying Guide

Provide the following for an accurate quote:

1. Material type & density (e.g., sand: 1.6 T/m³, ore: 2.5 T/m³)

2. Required capacity (cubic meters or tons per load)

3. Tractor specifications (horsepower, fifth wheel height, air system)

4. Destination country (for road legal compliance and axle load limits)

5. Operating environment (mine, highway, quarry, coastal)

6. Preferred options (air suspension, hydraulic tailgate, auto tarp, Hardox body)

Key tips:

• For heavy ores → Choose Heavy-Duty Pro with reinforced floor (6 mm Hardox)

• For sticky materials (clay, wet sand) → U-shape is essential to prevent sticking

• For long haul → Air suspension + EBS recommended

• For coastal / corrosive environments → Hot-dip galvanizing or special paint required

7. Delivery & Service