Two 40 Ton 3 Axle Flatbed Semi Trailers for Tanzania

Project Summary

ROADKING manufactured two 40 ton 3 axle flatbed semi trailers for a steel and construction materials supplier based in Dar es Salaam, Tanzania.

The trailers will transport steel plates, H-beams, reinforcing bars, steel pipes and other construction materials from Dar es Salaam to project sites in Mwanza, Arusha and other inland regions.

Both units have completed production and final inspection. Shipment to Dar es Salaam Port is currently in progress.

Customer Background

The customer is a local steel and building materials supplier serving construction sites, road and bridge projects, and industrial customers across Tanzania.

Its products arrive through Dar es Salaam Port before being distributed to inland destinations. Typical cargo includes:

• Steel plates
• H-beams and structural steel
• Reinforcing bars
• Steel pipes
• Construction materials
• Steel coils carried with suitable support frames

The company required two durable flatbed semi trailers for daily cargo loads of approximately 35 to 38 tons. A 40 ton rated configuration was selected to provide an appropriate operating margin within the approved vehicle and route limits.

Main Transport Challenges

Heavy Steel Loads

Steel plates, beams and reinforcing bars create concentrated loads on the trailer platform. The customer was concerned that an insufficient frame specification could lead to bending, weld fatigue or structural cracking during repeated transport.

The trailer therefore needed a reinforced main frame designed for regular heavy-duty steel and construction material delivery.

Mixed Road Conditions in Tanzania

The trailers will operate on major highways as well as regional roads and access routes leading to construction sites.

Some inland sections contain sharp bends, uneven surfaces and unpaved areas. The customer therefore preferred a mechanical suspension system that could provide reliable load support without creating complicated local maintenance requirements.

Cargo Movement on the Platform

Steel products can slide during braking, cornering or travel over uneven roads. The customer required a checker-plate platform and multiple heavy-duty lashing points around the deck.

These features allow operators to secure beams, plates and other materials using appropriate chains, straps and cargo-control equipment.

Local Parts and Maintenance

The customer wanted commonly serviceable running-gear components that Tanzanian workshops could inspect and repair.

For this reason, the trailers were configured with three 13 ton American-type axles, mechanical suspension and standard heavy-vehicle braking components.

Customised ROADKING Solution

40 Ton Rated Flatbed Configuration

The two trailers were configured for a rated payload of 40 tons, matching the customer’s regular 35 to 38 ton steel transport requirement.

Actual road loading must remain within the approved gross vehicle weight, axle-load distribution and Tanzanian route requirements.

Three 13 Ton American Type Axles

Each trailer is equipped with three 13 ton American-type axles.

This configuration supports heavy-duty operation while using a component type familiar to many commercial vehicle workshops. The customer can more easily identify compatible brake linings, wheel-end parts and other common service components.

Heavy Duty Mechanical Suspension

The customer selected mechanical suspension instead of air suspension.

Its straightforward structure is suitable for heavy loads and mixed road conditions. It also simplifies routine inspection and repair in areas where specialised air-suspension service may not be readily available.

Steel Transport Platform

The flatbed uses a checker-plate deck to provide a durable working surface and additional grip during loading.

Multiple lashing rings are arranged around the platform for securing steel plates, structural beams, reinforcing bars and construction materials.

Steel coils must be transported with suitable coil supports, chocks and a cargo-securement plan designed for the actual coil weight and dimensions.

Braking and Safety Components

The trailers are fitted with a dual-line pneumatic braking system and an emergency relay valve.

LED rear lamps, mudguards and the required electrical connections were installed and checked before shipment.

Customer Specified Blue Finish

Both trailers were finished in the customer’s selected blue colour. Powder coating and protective surface treatment were applied to improve corrosion resistance during coastal and inland operation.

Final Technical Specifications

Project Implementation

Transport Requirement Review

ROADKING reviewed the customer’s cargo types, normal loading weight, delivery routes, tractor compatibility and local maintenance conditions.

The customer confirmed that the trailers would mainly transport long steel products and construction materials between Dar es Salaam and inland project locations.

Configuration Confirmation

The final configuration included:

• 13 metre platform length
• 2.5 metre overall width
• 40 ton rated payload
• Three 13 ton American-type axles
• Mechanical suspension
• Twelve 12R22.5 tubeless tires
• Checker-plate platform
• Multiple cargo lashing rings
• Dual-line pneumatic braking
• Blue exterior finish

The kingpin height, electrical connections and braking interface were checked against the intended tractor configuration before production.

Frame Production and Welding

The main frame and platform structure were manufactured according to the customer-confirmed technical drawing.

During production, the team checked frame alignment, principal steel sections, welding positions and mounting points. Particular attention was given to the main load-bearing structure and the areas around the suspension brackets.

Assembly and Final Inspection

After frame production, the axles, mechanical suspension, braking system, tires, landing gear, lighting and accessories were installed.

Final checks covered:

• Trailer dimensions
• Frame and platform condition
• Axle and suspension installation
• Brake-line connections
• Emergency braking operation
• LED lighting
• Lashing rings
• Landing gear
• Tire installation
• Paint and surface finish

Shipment to Tanzania

Both trailers have completed production and final inspection.

They are currently being shipped under CIF Dar es Salaam terms. The customer will arrange customs clearance, local registration and inland delivery after the trailers arrive at Dar es Salaam Port.

Documentation and Customs Support

ROADKING prepared the English nameplates and the manufacturing and export documents agreed in the sales contract.

The document package includes:

• Commercial invoice
• Packing list
• Bill of lading
• Product specification
• English nameplate information
• Contracted manufacturing and inspection documents

All customs documents are prepared according to the actual product configuration and commercial transaction. The customer’s customs broker can use these documents when completing the Tanzanian import declaration and registration process.

Final tariff classification, import duties, vehicle registration and road approval remain subject to the relevant Tanzanian authorities.

Spare Parts and Technical Support

A recommended spare-parts list can be prepared according to the installed axle, suspension and braking components.

Priority service items include:

• Brake linings and brake components
• Wheel bearings and seals
• Suspension bushes and pins
• Leaf-spring components
• Air hoses and connectors
• LED lamps
• Electrical connectors
• Landing-gear parts

ROADKING can also provide remote technical guidance for arrival inspection, trailer preparation and routine maintenance.

Project Result

ROADKING completed both 40 ton 3 axle flatbed semi trailers within the agreed 35-day production period.

The finished trailers combine three 13 ton American-type axles, mechanical suspension, 12R22.5 tubeless tires, a checker-plate platform and multiple heavy-duty lashing points.

Shipment to Dar es Salaam is now in progress. The trailers have not yet been described as delivered or placed into service because the shipment and local registration process are still underway.

Frequently Asked Questions

Can the Trailer Carry Steel Plates and H Beams

Yes. The flatbed platform is configured for steel plates, H-beams, reinforcing bars, pipes and other construction materials. Cargo must be positioned and secured according to its actual weight and dimensions.

Can It Transport Steel Coils

Steel coils can be transported when suitable coil supports, chocks and approved securing equipment are used. The coil weight and centre of gravity must be checked before loading.

Why Did the Customer Choose Mechanical Suspension

Mechanical suspension has a straightforward structure and is suitable for heavy-duty operation. It is also easier for many regional workshops to inspect and maintain than a specialised air-suspension system.

Are Spare Parts Available for the American Type Axles

ROADKING can provide a spare-parts list based on the installed axle model. The use of American-type axles also makes it easier to identify commonly used brake and wheel-end service parts through commercial vehicle parts suppliers.

What Documents Are Supplied for Tanzania

The contracted documentation includes English nameplate information, applicable conformity documentation, packing list, commercial invoice, bill of lading and relevant product specifications.

Request a Flatbed Trailer Quotation

If you need a 3 axle flatbed semi trailer for transporting steel, construction materials or industrial cargo in Tanzania, send ROADKING your cargo type, loading weight, tractor model, operating routes and destination port.

Our team can prepare a technical configuration, CIF Dar es Salaam quotation, production schedule and recommended spare-parts package for your project.