US DOT/FMVSS Standard Heavy-Duty Flatbed Trailer
The US DOT/FMVSS Standard Heavy-Duty Flatbed Trailer is a precision-engineered commercial transport semi-trailer designed specifically to comply with United States Department of Transportation (DOT) regulations and Federal Motor Vehicle Safety Standards (FMVSS)—including FMVSS 121 (air brake systems) and FMVSS 108 (lamps, reflective devices, and associated equipment). Constructed with high-strength Q345B/Q550 structural steel and automated submerged-arc welding, it features North American standard dimensions (48-foot or 53-foot lengths, 102-inch overall width), a heavy-duty side rail winch track system with sliding winches and straps, stake pockets with pipe spools, and heavy-duty tandem or spread axle configurations. Equipped with durable commercial axles, WABCO/Haldex FMVSS-compliant ABS air brakes, and multi-position ISO twist-locks, it delivers exceptional payload capacity, highway safety compliance, and operational versatility for North American long-haul flatbed freight. Fully certified under DOT, FMVSS, ISO9001, CCC, CE, and SGS standards.
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Product Details
Technical Specifications
Model NO. : Customized
Type : Semi-Trailer
Load Capacity : 40T / 50T (80,000 lbs GVWR Rated)
Condition : New
Grade : Heavy Duty / North American DOT Compliant Grade
Shape : North American Standard Flatbed (48' / 53')
Origin : Shandong, China
Production Capacity : Customized
Certifications : DOT, FMVSS, ISO9001, CCC, CE, SGS
HS Code : 8716399000
Overall Dimensions : 14630mm (48') / 16154mm (53') x 2590mm (102") x 1450-1500 mm
Platform Dimension : Customized North American Standard Platform
Wheel Base : Tandem Axle or Spread Axle (49", 60", or 10-Foot Spread Configurations)
Tread : 1820 mm / 2050 mm
Axle Number : 2 / 3 Axles
Axle Brand : FUWA / BPW / American-Spec Heavy Duty
Axle Capacity : 20,000 lbs / 25,000 lbs per axle (approx. 13T/16T)
Tire Number : 8 / 12
Tire Specification : 11R22.5 / 295/75R22.5 Low-Profile Radial Tires
Tire Brand : Triangle / Double Coin / Linglong / Chaoyang
Rim : 8.25-22.5 / 9.00-22.5 Steel / Aluminum Disc Wheels
Suspension : Heavy Duty Mechanical Leaf Spring / Air Ride Suspension
Leaf Spring : 10pcs / 12pcs (90x16mm / 100x16mm)
Brake System : FMVSS 121 Compliant ABS Air Braking System
ABS Brand : WABCO / Haldex DOT-Spec
Self-dumping : Not Self-dumping
Material : High-Strength Steel (Q345B/Q550)
Main Beam Height : 500mm / 530mm
Upper Plate : 14mm / 16mm
Down Plate : 16mm / 18mm
Middle Plate : 8mm / 10mm
Welding : Automatic Submerged-Arc Welding
Platform Floor : Apitong Hardwood / Composite Flooring or 4mm/5mm Checkered Steel Plate
Securing System : Side Rail Winch Track with Sliding Winches & Straps, Stake Pockets, and Pipe Spools
Landing Gear : 25T / 28T Two Speed Heavy Duty (JOST / Holland Style)
King Pin : 2-inch (50#) SAE Kingpin (Adjustable Setting per State Bridge Laws)
King Pin Brand : JOST / FUWA
Twist Lock : 12pcs Integrated Multi-Position ISO Container Locks
Spare Tire Carrier : 1-2pcs Winch-Type Carrier
Tool Box : 1pcs Heavy-Duty Aluminum or Steel Lockable Box
Electric System : 24V / 12V Converted, FMVSS 108 Compliant Sealed LED Lighting
Wiring Harness : Sealed Weatherproof Armored Lines with SAE Standard Plugs
Painting : Shot-Blasting + Epoxy Zinc-Rich Primer + Polyurethane Topcoat
Colour : Optional Custom RAL Code
Warranty : Main Beam 3Y / Axle 1Y
Package : Nude / Container / Ro-Ro
Delivery Time : 25-30 Working Days
Payment Terms : T/T, L/C
Key Structural & Performance Features
1. North American Regulatory Architecture & Dimensions
- DOT & FMVSS Compliance: Designed and manufactured strictly in accordance with US Department of Transportation requirements and Federal Motor Vehicle Safety Standards (FMVSS 108 lighting, FMVSS 121 braking, and structural integrity guidelines).
- Standard North American Profile: Built to standard US dimensions (48-foot or 53-foot length, 102-inch width) with optimized kingpin settings to ensure seamless interchangeability across North American highway networks and intermodal yards.
- Q345B/Q550 High-Tensile Spine: Main longitudinal beams fabricated from high-yield structural steel using continuous automated Submerged-Arc Welding (SAW), delivering maximum bending stiffness and resistance to heavy concentrated loads.
2. North American Cargo Securing & Winch Track System
- Side Rail Winch Track & Sliding Winches: Fitted with heavy-duty exterior C-channel side rails featuring integrated winch tracks, movable sliding winches, and high-strength nylon straps for fast, secure lashing of lumber, steel, and general freight.
- Stake Pockets & Pipe Spools: Heavy-duty structural stake pockets and full-length pipe spools welded along both side rails to accommodate vertical side stakes and chain tie-downs.
- Dual-Purpose Decking Options: Configured with durable apitong hardwood composite flooring or heavy-duty checkered steel plate, paired with 12 retractable ISO twist-locks for optional container transport.
3. Axle, Suspension & FMVSS-Compliant Pneumatics
- Heavy-Duty Axle & Suspension Setup: Premium commercial axles (FUWA / BPW / American-spec) paired with robust multi-leaf mechanical suspension or air-ride systems designed for smooth highway tracking and minimal tire wear.
- FMVSS 121 Compliant Braking: Equipped with WABCO / Haldex DOT-approved ABS pneumatic braking systems, emergency relay valves, and spring brake chambers to guarantee fast response and short stopping distances.
- FMVSS 108 Lighting Package: Sealed 24V/12V LED clearance markers, stop/turn lamps, and high-visibility retro-reflective tape layout meeting all federal conspicuity and lighting mandates.
Commercial & Logistics Terms
- Warranty Policy: 3-Year warranty for the main structural chassis frame; 1-Year warranty for axles.
- Delivery Lead Time: 25 – 30 working days upon order confirmation.
- Packaging & Shipping: Nude packing; shipped via Container, Ro-Ro vessel, or Bulk Cargo ship.
- Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit).
