Four-Axle Flatbed Semi-Trailer – Heavy-Duty Load Capacity & Road Compliance

Product Overview

Prime Mover Industries Four-Axle Flatbed Semi-Trailer is a heavy-duty logistics transportation solution engineered for high-load, long-haul, and cross-border freight scenarios. Upgraded from traditional 3-axle flatbed models, the 4-axle layout achieves scientific load dispersion, effectively reducing single-axle pressure to fully comply with global highway axle load limit regulations. Built with high-tensile steel integral welding technology, this trailer integrates ultra-high bearing capacity, superior driving stability and versatile cargo adaptability, solving the pain points of insufficient load capacity, easy overload penalty and poor stability of ordinary flatbed trailers. It is the core preferred equipment for fleet companies engaged in container transportation, engineering machinery haulage and heavy industrial cargo delivery.

Core Product Advantages

Scientific 4-Axle Load Distribution, Full Compliance

Equipped with four heavy-duty standard axles, the load is evenly distributed on the road surface, which greatly reduces single-wheel and single-axle pressure. It perfectly adapts to strict weight inspection standards in Europe, the Middle East, Africa, Southeast Asia and other regions, completely avoiding traffic fines and road restriction problems caused by overload. Meanwhile, the multi-axle design disperses driving vibration force, effectively reducing chassis fatigue deformation and extending the overall service life of the trailer.

Ultra-High Bearing Capacity, Wide Cargo Adaptability

Adopts reinforced Q345B high-strength steel main beam with deepened I-beam structure and integral submerged arc full welding process. The overall frame is resistant to bending and deformation, with a stable bearing limit. It can stably carry heavy cargo such as large construction machinery, steel structures and oversized equipment, breaking the load limitation of traditional flatbed trailers and realizing one-time transportation of heavy and large freight to improve fleet delivery efficiency.

Enhanced Driving Stability & Safety

The four-axle wide-track layout optimizes the trailer’s center of gravity balance, effectively reducing body sway during high-speed driving, sharp turning and uneven road driving. Matched with high-performance suspension and professional braking system, it realizes stable braking and anti-skid control, greatly improving transportation safety, especially suitable for long-distance highway transportation and complex mountain road working conditions.

Durable Structure & Low Operation Cost

The whole vehicle adopts sandblasting anti-rust treatment + epoxy primer + weather-resistant topcoat three-layer anti-corrosion process, which resists corrosion in humid, coastal and dusty industrial environments. The standard configuration of wear-resistant tires and high-quality axle parts reduces later maintenance frequency and replacement cost. The reasonable load dispersion design also reduces tire wear and road resistance, saving long-term fuel consumption for fleets.

Flexible Customization & Strong Versatility

Supports multiple customized configurations: adjustable container twist locks, detachable side guardrails, multi-specification lashing rings, optional hydraulic rear ramps, lift axle system and automatic leveling devices. It can freely switch between container transportation, bulk cargo transportation and mechanical equipment transportation scenarios, maximizing vehicle utilization rate.

Complete Technical Parameters (Standard Version)

Item	Standard Specification	Optional Upgrade
Overall Dimension	13000×2480×1550mm	12m/14.6m/17m customized length
Axle Configuration	4×13T heavy-duty axles (FUWA/BPW optional)	4×16T reinforced heavy-load axles
Tare Weight	7800kg	Lightweight high-strength steel body (reduce 600kg)
Max Payload	60 Ton	70–80T super-heavy load version
Suspension System	Heavy-duty mechanical suspension	Full air suspension / front/rear airbag lift suspension
Tire Specification	12.00R22.5 tubeless tires	315/80R22.5 wide-base tires
Main Beam	Q345B steel, 500mm deepened I-beam	Q690 ultra-high strength steel
Flat Deck	3mm anti-slip checkered steel plate	Hardwood anti-slip floor / thickened wear-resistant plate
King Pin	2-inch JOST bolted kingpin	3.5-inch heavy-duty kingpin
Landing Gear	28T double-speed manual landing legs	Hydraulic remote-control landing gear
Brake System	WABCO brake valve + ABS anti-lock system	EBS electronic braking system
Container Fittings	16 standard fixed twist locks	Adjustable twist locks + enhanced lashing rings
Certification	ISO9001, CE, DOT, GCC, SGS	Custom regional certification for Africa/Middle East

Main Application Scenarios

Container Logistics Transportation

Suitable for 20ft/40ft standard container round-trip transportation between ports, inland depots and logistics parks. The four-axle load balancing design avoids overload during full-load transportation, ensuring compliant passage at border crossings and highway toll stations, and greatly improves the efficiency of cross-border container logistics.

Engineering & Construction Machinery Haulage

It is the preferred trailer for transporting large excavators, loaders, road rollers, concrete mixing equipment, tower crane accessories and other engineering machinery. The high-strength flat platform and stable bearing capacity ensure no chassis deformation during heavy-load transportation, and reliable fixing accessories prevent equipment displacement.

Heavy Industrial Cargo Transportation

Widely used for steel coils, steel plates, H-beams, aluminum ingots, precast concrete components, wind power accessories and other heavy industrial materials. Uniform load distribution avoids local pressure overload of the vehicle body and effectively protects the integrity of cargo and trailer structure.

Oversized & Bulk Freight Transportation

Adaptable to irregular oversized cargo such as stone slabs, large glass, agricultural machinery and vehicle equipment. The open flatbed design is convenient for cargo loading, unloading and binding, and the multi-point lashing structure ensures firm fixation of various bulk and special-shaped cargo.

Daily Maintenance & Upkeep Guidelines

Daily Pre-Trip Inspection

Check the tightness of all axle fixing bolts, suspension U-bolts and frame connectors to avoid loose parts during driving; inspect tire pressure, tread wear and sidewall damage, and ensure consistent pressure of four axles to avoid unbalanced load; test the braking and ABS system to confirm sensitive and stable braking; clean the air tank drainage to prevent pipeline corrosion.

Regular Periodic Maintenance

• Every 5,000km: Lubricate axle bearings, kingpins and landing gear gears, and retighten all chassis bolts;
• Every 20,000km: Inspect suspension spring plates, shock absorbers and brake wear parts, replace aging brake pads and sealing accessories;
• Every 50,000km: Conduct overall chassis anti-rust inspection and touch-up painting, calibrate four-axle parallelism and braking balance, and comprehensively detect the frame bearing structure.

Prohibited Operation Specifications

Strictly prohibit overloaded transportation beyond the rated load to avoid permanent deformation of the frame and suspension; avoid long-term driving on severely bumpy roads with full load; do not park the vehicle for a long time with single-side stressed to prevent chassis distortion; regularly clean the flatbed surface to avoid long-term accumulation of heavy sundries causing local fatigue damage.

Global After-Sales Service Support

Professional Warranty Policy

Main frame and four-axle bearing structure: 60-month/300,000km long warranty; core components such as suspension and braking system: 24-month warranty; factory-provided spare parts enjoy genuine quality assurance. Consumable parts have standard limited warranty, and man-made damage and improper operation are excluded from free warranty.

24/7 Global Technical Support

Multilingual after-sales teams provide online video and remote technical guidance 24 hours a day, responding to fault handling requests within 4 hours. Provide professional operation and maintenance training for drivers and maintenance personnel to help fleets standardize use and reduce failure rates.

Global Spare Parts Supply Network

With overseas spare parts warehouses in the Middle East, Africa, Southeast Asia and other regions, we realize fast delivery of original accessories, effectively shortening maintenance cycle and reducing fleet downtime losses. All spare parts are sold at factory direct prices to control customer operation costs.

Customized Service & On-Site Support

Support personalized modification and upgrade of trailers according to local traffic regulations and customer working conditions. For bulk orders, we provide overseas on-site delivery inspection, installation debugging and one-stop technical training services, and support multi-language official operation and maintenance manuals.

Brand Closing

Prime Mover Industries Four-Axle Flatbed Semi-Trailer breaks the limitation of traditional flatbed transportation, with stronger load capacity, higher driving safety and full road compliance. It helps global logistics fleets reduce compliance risks, improve transportation efficiency and create higher long-term economic benefits.

Contact our international sales team now to get exclusive customized solutions, detailed drawings and preferential quotation.