Operating in challenging winter conditions and complex hard rock formations in Changchun, Jilin, HDD Master successfully delivered a high-precision natural gas pipeline crossing project. Utilizing our heavy-duty HDD Drilling Rig (ZT-140), high-torque HDD Drill Bits & Rock Heads, and heat-treated HDD Drill Rods, the project team safely pulled a 426mm steel gas pipeline across a 600-meter span with exceptional stability and accuracy.
Country / Project Type：
Location: Changchun, Jilin, China
Application: Municipal Natural Gas Pipeline Installation (Winter Construction)
Project Scope: Long-Distance Hard Rock Bore Crossing
HDD Rig Model
Deployment: High-Performance Drillto-Drillmaster ZT-140 HDD Machine (Engineered for high-torque rock drilling and severe geological conditions)
Ground Conditions and Bore Specifications
Geology: Hard Rock Formations & Frozen Winter Soil
Bore Specifications: 600 Meters in Length | 426 mm (approx. 16.8 inches) Diameter Steel Pipeline
Equipment & Tooling Configuration
Drilling Rig: ZT-140 Heavy-Duty Horizontal Directional Drilling Rig equipped with robust hydraulic pulling capacity.
Downhole Cutting Tool: Specialized HDD Rock Bits & Pilot Drilling Heads optimized for hard rock penetration.
Drill String Assembly: High-Tensile Forged HDD Drill Pipes designed to withstand extreme rotational torque and pullback strain.
Reaming & Mud System: Multi-stage high-shear mud mixing and recycling unit ensuring optimal borehole stability and slurry suspension.
Verified Project Results
Successful Rock Penetration: Overcame dense rock strata and freezing winter conditions with zero deviation or tool failure.
Smooth Pipe Pullback: Completed the 600-meter, 426mm steel pipe pulling in a single continuous operation ahead of schedule.
Proven Durability: Demonstrated the exceptional reliability, high torque output, and structural integrity of rigs and tooling from HDD Master in severe cold-weather rock formations.