Low Bed Semi Trailer with Extension Board

Low Bed Semi Trailer with Extension Board

This low-bed semi-trailer with extension board is manufactured throughout the entire process in accordance with the national "Technical Requirements for Lowbed Semi-Trailers" and relevant road transport equipment standards, ensuring compliance with basic road traffic and freight transport regulations from the design stage.
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Description
 

introduction

 

 

Low Bed Semi Trailer with Extension Board is a heavy-duty transport trailer designed for oversized and over-width cargo. The fold-out extension boards increase deck width to accommodate wider equipment without sacrificing stability.

 

 

 

features

 

 

 

  1. Fold-out extension boards enlarge the deck width from the standard 3,000 mm up to 3,500–4,000 mm, allowing one trailer to transport over-width cargo.
  2. High-strength welded main beams made from Q460 or T700 steel provide excellent bending and torsional resistance, ensuring structural reliability under concentrated heavy loads.
  3. Low deck height of 850–1,100 mm lowers the cargo center of gravity, improving road stability and helping meet transport height restrictions.
  4. Mechanical or hydraulic extension board operation enables quick width adjustment, reducing loading preparation time and increasing operational efficiency.
  5. Reinforced extension hinges and locking pins secure the side boards under dynamic loads, preventing movement during transport.
  6. Multiple lashing rings, side stakes, and optional outriggers improve cargo restraint, making the trailer suitable for irregular and oversized machinery.
  7. Optional air suspension, hydraulic ramps, and steering axles can be customized, allowing distributors to match local regulations and market demands.

 

 

 

applications

 

 

· Construction Industry – Transports excavators, bulldozers, and wheel loaders with wide tracks or attachments.

· Mining Industry – Moves crushers, drilling rigs, and oversized mining equipment between project sites.

· Agricultural Machinery – Carries combine harvesters, seeders, and sprayers with large operating widths.

· Wind Power Projects – Supports transportation of transformers, nacelle components, and heavy auxiliary equipment.

· Oil and Gas Industry – Delivers skids, tanks, and modular equipment to remote energy facilities.

· Infrastructure Projects – Moves precast beams, steel structures, and large industrial components.

· Equipment Rental Companies – Provides flexible transport for a wide range of standard and oversized machines.

 

 

 

Manufacturing Capability

 

Production Equipment

  • Equipped with CNC plasma cutting machines, automatic submerged arc welding lines, robotic welding stations, and large shot blasting systems.
  • Hydraulic assembly platforms and axle alignment equipment ensure precise dimensional control.

 

Manufacturing Process

  • Main beams are welded using full-penetration submerged arc welding to maximize structural strength.
  • Steel surfaces are shot blasted to Sa 2.5 and coated with epoxy primer and polyurethane topcoat for corrosion resistance.

 

Capacity & Delivery

  • Annual production capacity exceeds 5,000 trailer units with stable export supply capability.
  • Standard models can typically be delivered within 20–35 working days after order confirmation.

 

OEM/ODM Customization

  • Available options include payload capacity, axle brands, suspension type, deck dimensions, extension width, ramps, and paint colors.
  • Trailer design can be customized to meet local transport regulations and customer branding requirements.

 

Quality Control System

  • Each trailer undergoes material inspection, weld inspection, dimensional checks, axle alignment verification, and full load testing.
  • Manufacturing is conducted under a documented quality management system with complete traceability.

 

 

 

FAQ

 
Q1: What is the purpose of the extension boards?
A: The extension boards increase the usable deck width, enabling the trailer to transport over-width cargo such as agricultural and construction equipment.
 
Q2: How wide can the trailer be extended?
A: Depending on the design, the deck width can typically expand from 3.0 m to 3.5–4.0 m or according to customer specifications.
 
Q3: Are the extension boards strong enough for heavy machinery?
A: Yes. The side extensions are reinforced with heavy-duty hinges and locking systems designed to withstand dynamic transport loads.
 
Q4: What customization options are available?
A: Payload capacity, axle quantity, suspension, ramps, steering axles, hydraulic systems, and deck dimensions can all be customized.
 
Q5: How is the trailer protected against corrosion?
A: All steel components are shot blasted and coated with industrial-grade primer and topcoat to ensure long-term resistance to rust and weather exposure.

 

 

 

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