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Innovative Angle 

W Type Nontipping Semi Trailer that is designed according to the European Pressure Vessels Regulation and customer demands with our own know-how license and production technology, fully conforming to ADR regulations, CE conformity approval for dangerous powders and granules transportation, can be made of carbon, stainless steel and aluminium alloy materials, with wide volume range, geometric structure for quick and easy discharge, multi-outlets, side and rear discharge alternatives;  It is intelligent investment with the full and quick discharge capability of materials carried in different contents while being produced with continuous high performance robotic welding technology and also gains ’’Innovative Angle’’ to the sectors that serve beyond the boundaries of its reputation with its unique design, safe and long life structure that raises the standards.

31 ~ 56 m³

Volume Range

1 ~ 5

Discharge Funnel

-40 ~ +80 °C

Design Temperature

0,5 ~ 3 Bar

Design Pressure

Solid Future

Shape the future with innovative structure that changes habits and raises standards in the sector, trustworthy certification processes and gained profit.

Modular Options

Options of special designed alternative volume, discharge systems and equipment; sort out your job.

Show of Strength

Its style of unique body design, original stand and visual aesthetic against compeers; makes it more attractive.

Safe Lightness

We do not underestimate the weight! Carry out the dynamic loads at high volume under the heavy duty conditions with safe weight optimization and without compromising of the ergonomic driving.

Performance Needs Source

Durable body structure together with superior production technology and premium equipment turns the long lifetime into profit.


Automatic opening handrail
Provides ease of use, safety and automatically locks the brake system
Special body design at right angles
Prevents the material from staying inside and provides fast discharging, efficient use of air
Multiple output body design
Allows different types of material to move without mixing
Grouped, defined and systematic discharge line installation
Provides ergonomic, easily accessible, controlled and fast response
Safety valve and manometers
Provide safe pressure control
Discharge funnels
Provides quick and easy intervention against clogging with camlock connection, provides easy cleaning of the body
Outputs on the discharge funnel
Pneumatic controlled, ergonomic, interceptible
Body production in accordance with 97/23/EC Pressure Vessels Directive
CE certificated, safe, national international current legislation compliance
Integral construction on body and chassis
Perfect fit between body and chassis on all kinds of road conditions, increase strength, reduce tension by distributing force that comes to the body from the road conditions
Seamless one-piece plates in the body structure
The least number of (T) joints provide high strength and longlife
The longest welding seam technology in weld joints
Safe, smooth surface and unique body structure
Seamless high performance robotic welding technology
Minimizes welding faults on the body due to tension and human factors and secures against impact
Homogeneous paint application with advanced technical equipment
Provides surface gloss in varnish quality
Portable compressor mounting platform
Vibration absorber, Light and Strong
Germany KBA approved 2007/46/EC Vehicle Type Approval
National and International current legislation compliance
Coloured, POLYAMID air hoses
Prevents complexity on installation cables, provides serviceability


Width : max. 2.550 mm.
Height : max. 3.850 mm. *
Axle Distance 1.300 ~ 1.400 mm *
Wheel Height 1.250 ~ 1.350 mm *
Dead Weight : 4.300 ~ 8.350 kg *
Geometrical Volume : 31 – 34 – 37 – 40 – 50 – 56 – 60 m³ *
Number Of Compartment : 1 ~ 5 *
Silo Trailer
Category : 4
Construction Material Serial * : Carbon Steel
Transported Materials : Cement and similar Powder and Granular Materials *
Working Temperature : -400C  +800C
Working Pressure : 2 Bar
Test Pressure : 3 Bar
Certification : ISPESL CE (2014/68/EU Pressure Vessels Regulations)

* The product type and optional equipment can vary depending on your choice.

Silo Trailer Body:
  • W-type multi-output design in accordance with AD 2000 design standard,
  • High strength steel material,
  • Unique body structure with safety, smooth surface, with a minimum number of joints (T) points produced by the longest welding seam technology in the welded joints, in the Silo Trailer production sector, with circular joints in the special trunk construction,
  • ISO 3834 Welded manufacturing quality qualification approved,
  • Utilizing seamless high-performance robotic welding technology, welding faults due to tension and human factors on the body are minimized and secured against impact,
  • Lower body design with right angle, DN 800 discharge funnel with conical design, which prevents the material from staying inside, provides fast evacuation with efficient air use, provides leakproofness between lower body parts and prevents weld wear at junctions,
  • DN 400 discharge outlet flange with mounting bolt and preventing friction in the lower metal body, providing vibration inner collapsible lined with fiber woven fabric felts DN 200 referred funnel,
  • The DN 200 delivery funnel at the bottom of the hopper T outlet facilitates quick response to the drainage obstructions in the housing and provides a practical solution for the cleaning of the inside of the housing, the side line outlet with a self-locking flange, removable, pneumatically controlled drain valve control,
  • At chassis junctions, the holistic construction, designed to increase body strength, reduce stress effect, is achieved by synergy welding machines by certified specialist welders with perfect compatibility,
Loading/Discharge Line:
  • Loading Line:
    • Top filling with manhole covers
  • Discharge Line:
    • Of guide funnel, fast, reduces wear, without the risk of clogging may be easily interfered, flanged, bolted, direct, DN 200 according to the driving direction with the lower outlet piping rear or left from the discharge line and the outlet end of the double pernol the camlock associated cover welded joints are reinforced by external reinforcement against wear,
Air Line Installation:
  • Ergonomic, easily accessible, controlled and fast intervention, grouped, defined and systematic,
  • Controlled in-tank air inlet valve, which allows passage of pressurized air from the compressor into the body,
  • Emergency air discharge valve, which discharges pressurized air in the event of possible danger during discharge,
  • The collector discharge valve, which discharges the air in the collector pipe,
  • The controlled, air-vibration valve, which accelerates the flow of material in the body to the discharge funnels,
  • The material accelerating jet nozzles, which accelerate the material flow in the material delivery line,
Compressor and Connection Platform:
  • Optionally, the preferred compressor,
  • The compressor operation of vibration damping occurs during special wedge is integral with the tray plate, compressor safe connection platform,
  • Suitable for body design, specially drawn "T" profile welded, special design with overturning safety, monoblock chassis with the same features as the body material,
  • Chassis construction parts are manufactured with synergy welding machines by certified welders under the approval of ISO 3834 Welded manufacturing quality qualification with perfect conformity,
Chassis Equipment:
King-Pin : Conforms to ECE R 55 regulation, type approved 2 "or 3.5" demountable king pin
Landing Legs : Each is double speed, 25 ton dynamic, 50 ton static load capacity trailer landing legs
Axles : Axle set with 9 ~12 tonnes each, mechanical or air suspension, drum or disc brake
Rims : 14,00 – 11,75 – 9,00 x 22,5
Tires : 425 - 385/65 R 22,5 (Single) or 315/80 R 22,5 (double)
Brake System : EBS / ABS braking system suitable for ECE R 13 regulation
Electric System: : ADR electrical set suitable for ECE R 105 regulation
Bumper: : Suitable for ECE R 58 regulation
  • At least 2 coats of epoxy primer
  • "OVEN-DRYING" application on topcoat with 2 coats of acrylic paint,
  • Improved technical equipment ensures homogeneous distribution on each side of the body and surface gloss of varnish paint gloss,

OKT TRAILER reserves the right to make changes in the products. Technical information is approximate and is intended for standard product application. The measurements may vary depending on the truck brand and model. The above information is not quoted. If you contact us, you can get more detailed information about the product.