Supply, Installation, and Commissioning of Pipelines including but not limited to Pre-insulated Carbon Steel pipes with diameters extending between 80mm to 900mm with about 7300M in length. Most used diameters will be 700mm and 750mm double-line; main & return. - Chambers: More than 30 Chambers for valves, air vents, release, etc. - Soil Works: Trench/Backfill for around 12,000 Cubic Meters.