U Shape Dump Semi Trailer
The U Shape Dump Semi Trailer (also known as a U-Type Tipper Semi Trailer, Half-Pipe Dump Semi Trailer, Curved Body Tipper Trailer, or Streamlined U-Box Dump Semi Trailer) is an advanced heavy-duty self-unloading transport trailer specifically engineered for high-efficiency bulk material handling, sand and gravel transit, ore hauling, mining operations, and aggregate logistics. Designed with a distinctive curved "U-shaped" cross-section, this trailer eliminates sharp bottom corners, significantly lowering the cargo center of gravity and preventing material sticking, mud build-up, and residue hang-up during discharge. Constructed on an ultra-reinforced Q345B/Q550/T700 high-tensile structural steel main chassis using automated submerged-arc welding, it is paired with a high-strength, wear-resistant steel body (HARDOX 450 or high-tensile Q345B/T700) that maximizes structural strength while optimizing tare weight for higher legal payloads. Powered by a front-mounted multi-stage HYVA telescopic hydraulic cylinder system, it offers smooth, high-angle tipping, rapid unloading cycles, and enhanced resistance to structural flex. Outfitted with 2, 3, or 4 commercial heavy-duty axles (13T/16T FUWA, BPW, STEYR, or AQ axles), heavy-duty 11-leaf mechanical spring or air ride suspension, an automatic top-hinged rear tailgate with pneumatic locks, and a dual-line pneumatic braking system with WABCO emergency relay valves, this U-shape dump trailer delivers superior anti-rollover stability, lower fuel consumption per ton-kilometer, and exceptional long-term fleet return on investment. Fully certified under ISO9001, CCC, CE, and SGS standards.
Contact Us for Pricing
Interested in this product? Contact us now for detailed pricing and product information.
Product Details
Technical Specifications
Model NO. : Customized / Standard U-Shape Dump Spec
Type : Semi-Trailer / U Shape Dump Semi Trailer (Half-Pipe Tipper)
Load Capacity : 40 - 70 Tons (Heavy Duty Payload)
Volumetric Capacity : Approx. 25 - 45 CBM (Customizable)
Condition : New
Grade : Heavy Duty / Mining, Aggregate & Infrastructure Logistics Grade
Shape : U-Shape Curved Body / Half-Pipe Front-Tipping Dump Structure
Origin : Shandong, China
Production Capacity : Customized
Certifications : ECE / ISO9001 / CCC / CE / SGS
HS Code : 8716399000
Overall Dimensions : 9.8m * 2.5m * 3.2m (LWH) / Customized (9500-11500 x 2500-2550 x 3000-3600 mm)
Cargo Box Inside Dimensions : 9.3m * 2.3m * 1.6m (LWH) / Customized
Tare Weight : Approx. 7800 kg - 9800 kg (Lightweight High-Strength Design)
King Pin Setting : 1220 mm
Steel Sheet Thickness : Floor Thickness 6mm - 8mm, Side Wall Thickness 4mm - 6mm (High-Tensile Steel or HARDOX Wear Plate)
Hydraulic Jack : Full set of HYVA hydraulic system, front setting telescopic hydraulic cylinder
Tailgate : One-piece tailgate with upper articulation, automatic mechanical/pneumatic safety lock system
Wheel Base : 4800mm + 1310mm + 1310mm / Customized
Tread : 1840 mm
Axle Number : 3 Axles (Optional 2 / 4 Axles)
Axle Brand : AQ, FUWA, BPW or STEYR axle
Axle Capacity : 13 Ton / 16 Ton per axle
Rims & Tires : Rim 8.0-20 or 8.5-20 / 9.00-22.5; Tire 11.00-20, 12.00-20 or 12R22.5
Tire Number : 12 pcs + 1 Spare Tire
Tire Brand : Triangle / Double Coin / Linglong
Suspension : 3 axle mechanical suspension with 11-pcs leaf spring / Air Ride Suspension / Bogie Suspension
Leaf Spring : 11-pcs (or 10/12-pcs heavy reinforced spring packs)
Brake System : Dual lines pneumatic brake system, WABCO Emergency Relay Valve; T30/30+T30 air chamber; parking brake
ABS Brand : WABCO / Kemi
Self-dumping : Self-dumping (Rear End Tipping)
Main Beam : I shape, Mild Alloy (16Mn / Q345B / Q550 / T700) by Automatic submerged arc welding
Cross Beam : Mild Alloy Q235 High-Density Crossmember Matrix
King Pin : Welded / Bolted kingpin, size 50# (2") or 90# (3.5")
Landing Gear : Double sides operation, Static capacity 30 Ton (JOST / FUWA)
Spare Tire Carrier : 1 or 2 Units Heavy-Duty Winch Carriers
Tool Box : 1 Unit Heavy-Duty Lockable Steel Box
Lights & Reflectors : Rear light, rear reflector, turn indicative light, side reflector, fog lamp, number plate light
Wiring : 24V, 6 lines / 7 lines ISO Standard Wiring Harness
Air/Elec. Connector : ISO standard air connector, 24V 7 pin plug socket
Paint : Sand blasting before painting, color upon request (Sa 2.5 + Epoxy Zinc Primer + Polyurethane Topcoat)
Warranty : Main Beam Frame 3 Years / Axles & Major Parts 1 Year
Package : Nude Packing / Bulk Vessel / Ro-Ro / SKD Packaging
Delivery Time : 20 - 25 Working Days
Payment Terms : T/T, L/C
Key Structural & Performance Features
1. Curved U-Shape Body Geometry & Rapid Discharge
- No Dead Angles & Clean Unloading: The smooth arc transition between the floor and side walls eliminates traditional 90-degree square corners, preventing wet sand, clay, coal, or fine aggregate from sticking and building up during discharge.
- Lower Center of Gravity & Rollover Prevention: The U-shaped structure naturally sits lower within the chassis frame, significantly reducing the trailer's center of gravity during both highway transport and high-angle tipping operations.
- Lightweight High-Strength Construction: Curved wall profiling provides high intrinsic structural rigidity without requiring heavy vertical exterior side stiffeners, reducing dead tare weight and allowing higher legal payloads per trip.
2. Front-Mounted HYVA Hydraulic Hoist & Frame Durability
- High-Leverage Front Telescopic Cylinder: Outfitted with a premium front-mounted HYVA multi-stage hydraulic cylinder system that optimizes lifting force, reduces hydraulic operating pressure, and ensures smooth tipping elevation.
- Submerged-Arc Welded High-Tensile Chassis: Constructed with high-strength Q345B/Q550/T700 steel main I-beams using automated submerged-arc welding, delivering supreme torsional resistance and frame integrity under dynamic loads.
- Automatic Rear Tailgate Locking: Top-hinged heavy-duty steel tailgate features automatic mechanical link latches and pneumatic safety clamps that unlatch seamlessly as the body elevates and seal tight upon lowering.
3. Commercial Running Gear & Pneumatic Braking Safety
- 13T/16T Heavy Commercial Axles: Fitted with 3 commercial heavy-duty axles (FUWA, BPW, STEYR, or AQ) rated for 13 to 16 tons per axle, ensuring compliant weight distribution and global spare parts availability.
- 11-Leaf Mechanical or Air Ride Suspension: Heavy-duty 11-piece leaf spring packs or optional pneumatic air ride suspension effectively absorb dynamic road shocks and keep chassis alignment stable across unpaved mining access tracks.
- WABCO Air Braking System: Dual-line pneumatic brake system equipped with a WABCO emergency relay valve, T30/30+T30 spring brake chambers, and a parking brake for immediate braking response and complete vehicle stability.
Commercial & Logistics Terms
- Shipping & Delivery: Shipped via Ro-Ro vessel, Bulk Cargo vessel, or stacked in SKD format to minimize international ocean freight costs.
- Warranty Coverage: 3-Year structural guarantee on the main chassis frame; 1-Year warranty covering axles, landing gear, hydraulic cylinder assembly, and braking valves.
- Payment Terms: 30% T/T deposit, 70% balance paid prior to dispatch; irrevocable L/C at sight accepted.
