Project Overview
Urban road horizontal directional drilling construction site
This set of field applications covers multiple typical trenchless construction scenarios: urban road crossing, farmland & open field pipeline installation, river and muddy ground crossing, mountainous terrain HDD pilot hole drilling. The construction team adopts crawler horizontal directional drilling rigs for trenchless laying of water supply, gas, communication and power pipelines. No large-area excavation is required, which protects roads, vegetation and existing surface facilities.
Adopted product: North Star HDD drill rods
Working condition: Complex strata (clay, silt, sand, mixed gravel), urban road / farmland / river crossing, long-distance pilot hole drilling & pipeline pullback, frequent make-up and break-out of drill strings
Construction Challenges
Stacked North Star HDD drill rods at mountain HDD construction yard
The construction sites feature varied and unstable formations.
During pilot drilling and pullback, drill rods bear large torque, tension, bending load and mud abrasion. Common on-site problems: thread galling, connection loosening, fatigue fracture, poor sealing, frequent replacement of drill rods and construction delay. Muddy and water-rich strata will further accelerate wear and corrosion of drill rod threads.
On-site Application & Performance
Muddy river crossing HDD construction, drill rod string in operation
نجم الشمال HDD drill rods are matched with mainstream crawler horizontal directional drilling rigs for pilot hole drilling and pipeline back-reaming pullback. The drill rod thread design ensures stable connection, reliable sealing and good torque transmission during continuous drilling and frequent rod connection operations.
Enclosed safety HDD construction site for rural pipeline crossing project
In multi-condition field verification including urban road crossing, wet muddy river sections and mountain gravel layers, North Star HDD drill rods maintain stable straightness of pilot holes. They effectively reduce thread wear and unexpected rod failure, lower the frequency of shutdown for drill string maintenance, improve the overall progress of trenchless pipeline projects and cut the comprehensive construction cost of drill consumables.
Summary
North Star HDD drill rods are developed for horizontal directional trenchless pipeline projects. Adaptable to urban, farmland, river-crossing and mountain complex strata, with excellent torsion resistance, tensile resistance and thread wear resistance. It is a stable and cost-effective drill string solution for long-distance HDD trenchless construction.
