Side view of Wilco Bulk Storage Trailer

Bulk Storage Trailer

Our Wilco WST-1600 trailer-mounted stationary bulk storage bins incorporate four pressure vessels and are used for on-site storage and pneumatic handling of bulk cement and other powdered bulk materials.

  • Description Description
  • Ruler Specifications
  • Resources Resources

The trailer is deployed empty to well locations. The trailer’s hydraulic landing legs are contracted, and the four-tank trailer drops to the ground, where it is supported by a specially designed under-frame structure.

The paint system is shot-blast with epoxy primer and acrylic urethane top coat with the customer’s choice of color and other finish details. Optional organic zinc-rich primer is available for units operated in marine environments or other harsh operating areas.

Wilco™ WST-1600 bulk storage trailers are warrantied for 12 months from shipment date for repairs resulting from workmanship. Components for outside vendors including engines, compressors, axles, and suspension are covered by the original manufacturer’s warranty. 


  • Hydraulic landing leg jacks: Two Ø 4-in. (101.6-mm) diameter hydraulic landing legs for raising and lowering the trailer for on-site deployment or for attachment to tractor. The legs are operated using a hydraulic pump mounted on the engine with a 10-gallon (38-L) hydraulic fluid reservoir. Each leg is independently controlled with a dual control valve.
  • Manifold: Fill and discharge by manually controlled butterfly valves; remote-control air-actuated valves available
  • Dust collector (optional): Wilco standard ASME cyclone dust collector or Wilco ASME dust collector with Donaldson ToritR filtration system available

Bulk Storage Trailer Specifications

Note: Trailer should only be transported empty.


47.0 ft 5.5 in. (14.47 m)


8 ft 6 in. (2.59 m)


13 ft 4 in. (4.06 m)

Total weight (empty)

37,100 lb (16 800 kg)

Weight at rear axles (empty*)

19,600 lb (8890 kg)

Unloaded kingpin weight

17,500 lb (7940 kg)

Bulk Storage Trailer Power Unit Specifications

Power unit

Tier III export or Tier IV final diesel engine

Fuel tank

30 gallons (114 L)


30-gallon (114-L) ASME air receiver with 3 in. (76.2 mm)


30-hp (22.4-kW) compressor producing approximately 200 ft3/min (5.66 m3/min) at 30 psi (207 kPa) at 2,000 RPM engine speed


Bulk Storage Trailer Frame Specifications



Steel I-beam frame mounted with a single axle and air ride suspension


25,000-lb (11 340-kg) axles with 71.5-in. (1.812-m) track


25,000-lb (11 340-kg) Neway air ride suspension

Steel wheel

22.5 × 8.25, 10-hole


11R22.5, 14-ply

Kingpin coupler

Heavy-duty 2-in. (50.8-mm) SAE Holland Hitch (other sizes also available)

Under-frame support structure

The special under-frame support structure is designed to maintain structural integrity of the trailer in a variety of conditions. This frame is employed after the trailer is deployed to a field location and the landing legs are contracted. The air suspension air pressure is released, and the total weight of the trailer and its contents are supported by the under-frame structure. The design is such that if the trailer were deployed on uneven ground that the structure retains structural integrity.

Bulk Storage Trailer Storage Vessel Specifications*

*Note: The tanks are designed per the ASME pressure vessel code for temperatures above -20 °F (-29 °C). Special low-temperature (-50 °F [-45.6 °C]) pressures can be optionally supplied.

Bulk storage tanks

Four 422-ft3 (12.0-m3) bulk storage tanks

Useable volume transport tanks

415 ft3 (11.8 m3)

Maximum allowable working pressure

40 psi at 250 °F (276 kPa at 121 °C)

Minimum design metal temperature

-20 °F at 40 psi (-29 °C at 276 kPa)


  • Bulk Storage Trailer Data Sheet
  • Wilco Capabilities and Services Brochure

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