Trenchless

Trenchless technology covers a range of methods for installing, repairing, and replacing underground pipes, cables, and conduits without open-cut excavation along the full route length. Municipal engineering departments, utility maintenance contractors, telecommunications infrastructure operators, and military engineering units across Pakistan use trenchless methods to reduce surface disruption, traffic interference, and reinstatement costs compared to conventional open trench installation on urban road networks and established infrastructure corridors.

Horizontal directional drilling steers a drill head through the ground along a pre-planned bore path from a surface entry point to a surface exit point, pulling back the product pipe or cable duct through the completed bore after breakthrough. Bore diameters run from 50mm for small service connections up to 1200mm for large diameter trunk main installations. Bore lengths extend from 50 meters on short road crossings up to several kilometers on river and railway crossing installations. Additionally, pipe bursting replaces existing buried pipes by pulling an expanding head through the old pipe, fracturing it outward into the surrounding soil and simultaneously pulling a new pipe into the void created by the bursting tool. This method suits cast iron, clay, and concrete pipe replacement without excavating the existing pipe route.

Cured-in-place pipe lining rehabilitates deteriorated existing pipes by inserting a resin-impregnated flexible liner tube into the pipe bore and curing it against the existing pipe wall using hot water, steam, or ultraviolet light. The cured liner forms a new structural pipe within the host pipe. It seals cracks, joints, and corrosion pitting without disturbing the ground surface above. Furthermore, pipe ramming drives a steel casing through the ground using a pneumatic impact hammer at one end, advancing the casing through undisturbed soil without a steered bore path, suiting short crossings beneath roads and embankments where directional control is not critical.

Inspection before and after trenchless installation uses CCTV drain cameras and sonar profiling to confirm bore path conditions and liner cure quality. Moreover, locating equipment including sondes and electromagnetic pipe locators tracks drill head and installed pipe position from the surface during installation, ensuring the bore path stays on the planned alignment throughout the drive.

Tactical Supply Pakistan supplies trenchless technology equipment, inspection tools, and locating instruments to utility installation contractors, municipal engineering departments, telecommunications infrastructure operators, and military engineering units requiring non-excavation underground infrastructure installation and rehabilitation capability across urban and rural project environments throughout Pakistan.