Drillto Trenchless Co., Ltd. is pleased to share another successful international project. A customized upgraded ZT-58/110A Horizontal Directional Drilling (HDD) Rig recently completed a municipal sewage pipeline installation project in Uzbekistan, demonstrating exceptional stability, drilling accuracy, and reliability in one of the most challenging underground construction environments.
The project required the installation of a Ø426 mm steel pipeline through water-bearing sand formations, while accurately crossing active railway lines, underground power cables, and fiber optic communication networks. Thanks to the upgraded configuration of the ZT-58/110A and the expertise of the construction team, the project was completed safely, efficiently, and on schedule.
Project Location: Uzbekistan
Project Type: Municipal Sewage Pipeline Installation
Equipment: Drillto ZT-58/110A Horizontal Directional Drilling Rig (Customized Upgraded Version)
Pipe Diameter: Ø426 mm Steel Pipe
Ground Conditions: Water-Bearing Sand Formation
Crossing Obstacles:
Railway
Underground Power Cables
Fiber Optic Communication Cables
Project Challenges
The construction site presented several technical challenges that required both high-performance equipment and precise drilling control.
The pipeline route needed to pass beneath an operating railway while avoiding existing underground electrical and communication infrastructure. In addition, the project was carried out in water-bearing sandy soil, where unstable ground conditions can easily lead to borehole collapse, drilling deviation, and increased construction risks.
To ensure successful completion, the customer required an HDD rig capable of delivering:
Stable pullback and rotary performance
High drilling accuracy
Reliable operation in saturated sandy formations
Continuous output under demanding working conditions
Enhanced safety during complex underground crossings
Customized Equipment Solution
Based on the project's geological conditions and construction requirements, Drillto supplied a customized upgraded ZT-58/110A HDD rig with optimized hydraulic and structural configurations.
The upgraded machine provided:
Stable hydraulic power output throughout the drilling process
Enhanced drilling stability in water-bearing sand formations
Improved operational efficiency and control
Reliable performance during long-distance drilling
Smooth operation with reduced maintenance requirements
The customized configuration enabled the customer to maintain accurate bore paths while ensuring continuous construction progress.
Outstanding Project Performance
During construction, the ZT-58/110A demonstrated excellent reliability and precise steering capabilities.
The machine successfully completed the following key tasks:
Accurate crossing beneath an active railway without affecting rail operations
Safe passage below underground power cables
Precise installation beneath fiber optic communication lines
Successful installation of a Ø426 mm steel pipeline through water-bearing sand
Despite the difficult geological conditions, the drilling process remained stable from pilot drilling to final pipe pullback, ensuring high construction quality and minimizing project risks.
The municipal sewage pipeline project was completed successfully, meeting all construction and safety requirements.
Successful installation of a Ø426 mm steel pipeline
Stable drilling performance in water-bearing sandy soil
Precise crossing of railway infrastructure
Safe protection of existing underground utilities
Improved construction efficiency
Reduced project risks and downtime
High customer satisfaction with equipment performance
The project once again demonstrated the reliability of Drillto HDD equipment in demanding trenchless construction applications.
The customer expressed great satisfaction with the performance of the customized ZT-58/110A HDD rig.
Throughout the project, the machine maintained consistent hydraulic output, smooth drilling operation, and excellent steering accuracy. The upgraded configuration performed exceptionally well in complex geological conditions, allowing the construction team to complete the pipeline installation efficiently and safely.
The customer also highly appreciated Drillto's customized engineering solution, professional technical support, and responsive after-sales service, and looks forward to cooperating on future underground infrastructure projects.
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With more than 25 years of experience in trenchless construction equipment manufacturing, Drillto continues to provide reliable HDD solutions for customers worldwide.
Customized HDD machine solutions for challenging projects
Advanced hydraulic technology and stable machine performance
Extensive experience in railway, highway, and river crossing projects
Strict quality control and comprehensive factory testing
Exported to more than 40 countries
Professional technical support and lifetime service
Whether your project involves municipal infrastructure, oil and gas pipelines, utility installation, or complex geological conditions, Drillto delivers dependable Horizontal Directional Drilling equipment designed to maximize productivity and minimize construction risks.
