Property of TGI.,It is the main asset of the Company. It consists of a first section up from the city of Barrancabermeja to the city of Neiva, which includes pipelines Montañuelo in the town of San Luis to the town of Gualanday in the Department of Tolima, and the pipeline Dina - Tello-Los Pinos in the department of Huila, the second section goes from Vasconia to Cogua, near Zipaquira. The first section provides natural gas to 26 municipalities in the departments of Boyaca, Santander, Caldas, Cundinamarca, Tolima and Huila; Through the Operational Center of Sebastopol we transport gas to the pipeline Sebastopol-- Medellín; This pipeline supplies the electricity generating plants of Termocentro, Termodorada, Termomeriléctrica , Termosierra and also the Mariquita pipeline to the West. The second sector supplies 18 municipalities in the departments of Cundinamarca, Boyacá and Santander and the capital, Bogota.

The total length of the pipeline is 1005 km in its two main trunk: Barrancabermeja - Neiva pipeline (560,630 kilometers), Vasconia -Cogua - Bogota pipeline (208.7 kilometers) Montañuelo - Gualanday of 37.4 Km, Dina - Tello-Los Pinos with 19.9 Kmts, the variant pipeline Puente Guillermo Sucre oriental 34.12 Km and in its branches 145.1 Km (2 "(99.68 Km), 3" (34.62 Km) and 12 "(10.8 Km)).