Heavy Duty Cargo Semi Trailer - Flatbed Sub-Frame
The Heavy Duty Cargo Semi-Trailer with Flatbed Sub-Frame (also known as a Flatbed Sub-Frame Cargo Semi-Trailer, Reinforced Flatbed Platform Trailer, or Heavy-Duty Multi-Purpose Base Semi-Trailer) is an ultra-versatile, high-strength transport trailer engineered for severe-service logistics, heavy industrial machinery, bagged construction materials, containers, steel coils, timber, and heavy general freight. Built around a heavy-duty flatbed chassis sub-frame featuring deep main I-beams, dense transverse crossmembers, and reinforced perimeter side beams welded via automated submerged-arc processes (Q345B/Q550/T700 steel), this design serves as a robust load-bearing foundation capable of accepting flat deck operations, container twist locks, or modular side wall installations. Outfitted with an anti-skid 3mm or 4mm checkered steel floor deck, 3 or 4 commercial heavy-duty axles (13T/16T/20T FUWA or BPW), extra-heavy multi-leaf spring or heavy bogie suspension, multi-position container locks, and a dual-line pneumatic air braking system with WABCO ABS, this trailer delivers maximum structural rigidity, exceptional anti-sag endurance, and long-term fleet return on investment across demanding mining and highway routes. 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
Type : Semi-Trailer / Heavy Duty Cargo Semi-Trailer with Flatbed Sub-Frame
Load Capacity : 40 - 70 Tons (Severe-Service Heavy Cargo Payload)
Condition : New
Grade : Extra Heavy Duty / Severe-Service Multi-Purpose Logistics Grade
Shape : Flatbed Platform Sub-Frame / Heavy Cargo Base Structure
Origin : Shandong, China
Production Capacity : Customized
Certifications : ECE / ISO9001 / CCC / CE / SGS
HS Code : 8716399000
Overall Dimensions : Customized (Approx. 12500-14600 x 2550 x 1500-1600 mm)
Deck Usable Length : Customized (Approx. 12300-14400 x 2480-2500 mm)
Sub-Frame Structure : Reinforced Flatbed I-Beam Layout with Integrated Crossmember Grid
Side Beam : 16mm / 18mm / 20mm Channel or Box Steel
Container Twist Locks : 4 / 8 / 12 Sets Heavy-Duty Drop-Down Twist Locks (Optional for 20ft/40ft Containers)
Wheel Base : 6800mm - 8800mm
Tread : 1820 mm
Axle Number : 3 / 4 Axles
Axle Brand : FUWA / BPW / HuaJin Severe-Service Heavy Duty
Axle Capacity : 13T / 16T / 20T per axle
Tire Number : 12 / 16 pcs + 1 or 2 Spare Tires
Tire Specification : 12.00R20 / 12R22.5 / 11.00R20 / 315/80R22.5 Heavy-Duty Radial Tires
Tire Brand : Triangle / Double Coin / Linglong
Rim : 8.5-20 / 9.00-22.5 Heavy-Duty Steel Rims
Suspension : Heavy Duty Mechanical Multi-Leaf Spring / Heavy Bogie / Air Ride Suspension
Leaf Spring : 10 pcs / 12 pcs / 14 pcs Extra-Thick Pack (90x16mm or 100x16mm)
Brake System : Dual-Line Pneumatic Air Braking System with ABS
ABS Brand : WABCO / Kemi / Haldex
Self-dumping : Not Self-dumping
Material : High-Tensile Structural Steel Q345B / Q550 / T700 Ultra-High Strength
Main Beam Height : 500mm / 520mm Heavy I-Beam
Upper/Down Plate : 16mm / 18mm / 20mm Extra-Thick Flange
Middle Plate (Web) : 8mm / 10mm / 12mm / 14mm
Welding : Automatic Submerged-Arc Welding
Floor Plate : 3mm / 4mm / 5mm Heavy Anti-Skid Checkered Steel Plate
Cargo Securing : Perimeter Rope Hooks / Stake Pockets / Heavy Floor D-Rings / Lashing Winches
Landing Gear : JOST / FUWA 28T Heavy-Duty Two-Speed Manual Landing Gear
King Pin : JOST 50# (2-inch) or 90# (3.5-inch) Heavy Duty Bolted / Welded King Pin
Spare Tire Carrier : 1 or 2 Heavy-Duty Winch Units
Tool Box : 1 Unit Heavy-Duty Lockable Steel Box
Electrical System : 24V, 7-Pin ISO Socket, Full LED Lighting Package
Painting / Finish : Sand Blasting (Sa 2.5) + Epoxy Zinc-Rich Primer + Polyurethane Topcoat
Colour : Optional / Customized RAL Code
Warranty : Main Beam Frame 3 Years / Axles & Major Parts 1 Year
Package : Nude Packing / Bulk Vessel / Ro-Ro / SKD Packaging
Delivery Time : 25 - 30 Working Days
Payment Terms : T/T, L/C
Key Structural & Performance Features
1. Ultra-Rigid Flatbed Sub-Frame Architecture
- Heavy-Duty Main Beam Infrastructure: Built around dual 500mm/520mm main I-beams fabricated from ultra-high-tensile Q345B/Q550/T700 steel using automated submerged-arc welding. Thickened flange plates (up to 20mm) prevent frame deflection or bowing under concentrated heavy loads.
- High-Density Crossmember Support: Dense transverse crossmembers spaced at short intervals penetrate through the main beams, forming an interlocking grid sub-frame that evenly disperses point loads across the chassis.
- Multi-Cargo Loading Versatility: Serves as a multi-functional transport base capable of carrying general palletized freight, heavy industrial machinery, timber, steel products, or ISO containers via integrated container twist locks.
2. Reinforced Anti-Skid Deck & Securing Hardware
- 3mm/4mm/5mm Checkered Steel Floor: Non-slip steel checkered deck plate is continuously welded to the sub-frame, enduring heavy forklift drive-in operations, track machinery loading, and heavy pallet friction without dishing.
- Comprehensive Cargo Securing: Outfitted with perimeter lashing hooks, heavy-duty floor D-rings, stake pockets, and optional side ratchet tensioners to ensure positive securing of diverse heavy cargo types.
- Optional ISO Container Twist Locks: Equipped with 4, 8, or 12 retractable container twist locks for seamless switching between general breakbulk cargo and ISO standard containers (1x40ft, 2x20ft, or 1x20ft heavy container).
3. Severe-Service Running Gear & Braking Safety
- Heavy Commercial Axles: Fitted with 3 or 4 commercial heavy-duty 13T, 16T, or 20T axles (FUWA or BPW) to handle intense payload demands and maintain compliance with axle-weight regulations.
- WABCO Air Braking with ABS: Dual-line pneumatic compressed air braking system with WABCO ABS delivers short stopping distances, rapid air pressure response, and wheel-lock protection across all wheel positions.
- Heavy Mechanical or Bogie Suspension: Reinforced 10 to 14-leaf spring packs (up to 16mm thick) with heavy equalizer rockers absorb dynamic shocks from rough unpaved roads and severe mining site access tracks.
Commercial & Logistics Terms
- Shipping & Delivery: Shipped via Ro-Ro vessel, Bulk Cargo vessel, or stacked in SKD format to optimize international ocean freight costs.
- Warranty Coverage: 3-Year structural guarantee on the main chassis frame; 1-Year warranty covering axles, landing gear, container twist locks, and braking components.
- Payment Terms: 30% T/T deposit, 70% balance paid prior to dispatch; irrevocable L/C at sight accepted.
