Automatic Submerged Arc Welded Dump Semi Trailer
The Automatic Submerged Arc Welded Dump Semi Trailer (also known as an SAW Submerged Arc Welded Chassis Tipper, Submerged Arc Welded Main Beam End Dump Trailer, Precision Welded Self-Unloading Semi Trailer, or Automated Weld Heavy-Duty Tipper) represents the pinnacle of structural frame integrity, deep weld penetration, and long-term fatigue resistance in heavy-duty bulk material transport. Engineered around a precision chassis frame where the main longitudinal I-beams, upper/lower flange plates, and web plates are joined using fully automated double-sided submerged arc welding (SAW) technology, this trailer eliminates human welding errors, cold joints, and internal weld porosities. The resulting continuous, high-flux molten weld pool delivers superior tensile strength and anti-torsional rigidity under extreme loading and tipping stresses. Constructed on an ultra-reinforced high-tensile Q345B/Q550/T700 structural steel or HARDOX 450 wear-resistant steel chassis, it features an 8mm–10mm floor deck and 6mm–8mm side wall cargo body backed by an extra-dense transverse crossmember matrix. Powered by a front-mounted multi-stage HYVA telescopic hydraulic hoist system, it delivers maximum tipping leverage, a steep 55° discharge angle, and rapid unloading cycles. Outfitted with 3, 4, or 5 commercial heavy-duty axles (13T/16T/20T FUWA, BPW, STEYR, or AQ axles), 11-leaf mechanical spring, heavy bogie, or air ride suspension, an automatic top-hinged tailgate with mechanical/pneumatic safety locking jaws, and a dual-line pneumatic air braking system with WABCO emergency relay valves, this automated submerged arc welded tipper trailer provides zero main beam cracking risk, maximum payload capacity, and exceptional lifetime operational reliability across severe mining, construction, and bulk logistics supply chains. Fully certified under ISO9001, CCC, CE, and SGS standards.
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Product Details
Technical Specifications
Model NO. : Customized / Submerged Arc Welded Dump Spec
Type : Semi-Trailer / Automatic Submerged Arc Welded Dump Semi Trailer (Automated SAW Frame Tipper)
Load Capacity : 40 - 80 Tons (Severe Duty Heavy Payload Rating)
Volumetric Capacity : Approx. 28 - 48 CBM (Customizable Volume Design)
Condition : New
Grade : Premium Heavy Duty / Mining, Aggregate, Highway Logistics & Heavy Infrastructure Grade
Shape : Heavy Rectangular or Deep U-Shape Cargo Box / Front-Hoist End Dump
Origin : Shandong, China
Production Capacity : Customized
Certifications : ECE / ISO9001 / CCC / CE / SGS
HS Code : 8716399000
Overall Dimensions : Customized (Approx. 9500-12000 x 2500-2550 x 3100-3700 mm)
Cargo Box Inside Dimensions : Customized (Approx. 9000-11500 x 2300-2400 x 1400-1800 mm)
Tare Weight : Approx. 7800 kg - 10200 kg
King Pin Setting : 1220 mm
Steel Sheet Thickness : Floor Thickness 8mm - 10mm, Side Wall Thickness 6mm - 8mm (High-Tensile Steel Q345B / Q550 / T700 or NM400 / HARDOX 450 Wear Plate)
Frame Welding Process : 100% Automated Gantry Double-Sided Submerged Arc Welding (SAW) on Main Longitudinal Beams
Hydraulic Jack : Full set of HYVA hydraulic system, front setting multi-stage telescopic cylinder
Tailgate : One-piece tailgate with upper articulation, automatic mechanical/pneumatic safety locks with rubber sealing gaskets
Wheel Base : 4800mm + 1310mm + 1310mm / Customized
Tread : 1840 mm / 1850 mm
Axle Number : 3 Axles, 4 Axles, or 5 Axles
Axle Brand : AQ, FUWA, BPW or STEYR Heavy Duty Axles
Axle Capacity : 13 Ton / 16 Ton / 20 Ton per axle
Rims & Tires : Rim 8.0-20, 8.5-20, or 9.00-22.5; Tire 11.00-20, 12.00-20, 12R22.5, or 315/80R22.5
Tire Number : 12 / 16 / 20 pcs + 1 Spare Tire
Tire Brand : Triangle / Double Coin / Linglong
Suspension : Heavy Duty Mechanical Suspension with 11-pcs Leaf Spring / Bogie Equalizer / Air Ride Suspension
Leaf Spring : 11-pcs, 12-pcs, or 14-pcs heavy-duty 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 : Front-Hoist HYVA Hydraulic Self-dumping (Rear End Tipping)
Main Beam : I shape, Mild Alloy (16Mn / Q345B / Q550 / T700) welded by 100% Automatic submerged arc welding
Cross Beam : Mild Alloy Q235 High-Density Transverse Crossmember Matrix
King Pin : Welded / Bolted JOST kingpin, size 50# (2") or 90# (3.5")
Landing Gear : Double sides operation, Static capacity 30 Ton / 35 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. Automated Double-Sided Submerged Arc Welding (SAW) Integrity
- Deep Flux-Shielded Penetration: Manufactured using automated gantry submerged arc welding equipment, submerging the arc under a granular flux layer to produce deep, uniform weld penetration joining top/bottom flanges and web plates without slag inclusions or micro-cracks.
- Superior Anti-Fatigue Strength: The continuous, unbroken weld bead eliminates localized stress concentration points along the main longitudinal I-beams, enabling the chassis to endure severe cyclic bending and twisting forces during high-angle tipping operations.
- 100% Ultrasonic & X-Ray Weld Testing: All critical SAW load-bearing joints undergo non-destructive ultrasonic and X-ray flaw detection testing to ensure structural compliance prior to chassis assembly.
2. Front HYVA Telescopic Cylinder & High-Tensile Chassis
- Front-Mounted HYVA Hydraulic Package: Equipped with an authentic multi-stage HYVA front-mounted telescopic hydraulic cylinder, providing maximum lifting leverage at the furthest distance from the rear pivot, reducing required hydraulic operating pressure.
- High-Density Crossmember Support Matrix: High-tensile steel transverse crossmembers are interlocked through precision laser-cut web pass-throughs and continuously welded to distribute heavy concentrated loads across the entire chassis frame.
- Steep 55° Clean Gravity Discharge: Reaches a steep elevation angle ensuring rapid, 100% complete gravity clearance of sticky clay, crushed rock, aggregates, or mineral ore without manual scraping.
3. Commercial Heavy Running Gear & Pneumatic Braking Safety
- 13T/16T/20T Heavy Commercial Axles: Powered by commercial heavy-duty axles (FUWA, BPW, STEYR, or AQ) engineered for high payload endurance and global spare parts support.
- WABCO Air Braking System: Dual-line pneumatic compressed air braking system equipped with WABCO emergency relay valves and T30/30+T30 spring brake chambers guarantees instant braking actuation and complete vehicle holding during tipping operations.
- Automatic Tailgate Safety Locking: Top-hinged heavy-duty tailgate unlatches automatically via mechanical/pneumatic linkage as the body elevates and seals tight upon lowering to prevent spillage.
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.
