DYWIDAG Threadbar Micropile System

The ideal foundation element: economical, space-saving, and strong.

The DYWIDAG ThreadbarMicropile is a drilled and grouted micropile with a diameter of less than 300mm (12 in.). Centrally reinforced with one DYWIDAG Threadbar, the DYWIDAG ThreadbarMicropile transfers large loads (including tensile, compression, and alternating) using small diameter drill holes in any soil type. It is particularly suited to low headroom applications or where piles are located adjacent to existing structures.

The DYWIDAG ThreadbarMicropile is a simple, economical and universally applicable foundation element.

  • Compact, lightweight drilling equipment allows for pile installation even in areas with low headroom or restricted space

  • Small, economic drill hole diameters, thus less cutting volume to manage

  • Vibration-free drilling prevents damage to adjacent structures, so drill holes can be placed close to existing walls or structures whilst keeping disruption to a minimum

  • Short bar sections with couplers can be utilized in low headroom locations 

  • Continuous robust thread allows for rough site handling and for easy on-site length adjustments since cutting or coupling of the rod is possible along its entire length

Main standards of steel nuances

Europe/ Asia/ Latin America: GEWI 500/550 Mpa, GEWI 555/700 Mpa, GEWI-Plus 670/800 Mpa, DYWIDAG Prestressing Steel Threadbar 950/1050 Mpa​

UK:  GEWI 500/600 Mpa, GEWI-Plus 670/800 Mpa, DYWIDAG Prestressing Steel Threadbar 950/1050 Mpa​

North America: Grade 75, 80, 100 DYWIDAG Threadbar Reinforcing Steel, Grade 150 DYWIDAG Threadbar Prestressing Steel​


  • Bearing plates with nuts and angle compensation

  • Borehole centralizers/spacers

  • Tremie tubes for borehole grouting from bottom up

  • Post-grouting tubes complete with TAM (tube à manchette) valves for bond stress enhancement

  • Rigid or hinged lifting shackles for suspending bars

  • Double Corrosion Protection (DCP), Galvanized or Epoxy coated options for bars and hardware

Industrial Buildings
Commercial & Residential Buildings