horizontal directional drilling rig / fixed / portable / rotary



  • Drilling type:

    horizontal directional

  • Mobility:

    fixed, portable

  • Drilling unit:


  • Other characteristics:

    hydraulic, construction, semi-automatic

  • Drilling diameter:

    Min.: 63 mm (2 in)

    Max.: 160 mm (6 in)

  • Drilling depth:

    50 m, 60 m (164'00")


A lightweight & portable hydraulic underground piercing unit.
UNB-20 has a full steering capability thanks to radiolocation navigation system. UNB-20 is a multifunctional unit designed for drilling in areas with limited accessibility and in confined urban spaces. The works are accomplished in two steps: 1) drilling a pilot bore with directional guidance, 2) pulling a reamer and expanding the hole by means of dry compaction. After that a new pipe is pulled into the expanded hole.


Installation of pipelines up to 160 mm in diameter at the distances of up to 60 meters
Replacement of old pipes up to 160 mm in diameter using the method of static pipe-bursting
Distinctive features

The principal competitive advantage of UNB-20 is its mobility. The equipment set consists of easy assembly modules. A crew of two persons without any lifting equipment can assemble the machine at construction site and start works within 20-30 minutes.

UNB-20 can be transported with light-duty motor vehicles. No cranes or excavators are required to assemble the machine at the construction site. This is very important for the construction of pipelines in remote areas or in areas of limited accessibility.

This unit can be safely recommended for specialized construction companies with significant experience and a fleet of drilling equipment, and as well as for the companies who are new to trenchless technologies.

Unb20 zIMG 2451 hydrost.jpg
Options for the UNB-20 unit installation and operation: