An improvement project of 26" old pipeline that was stopped for long time was defined to supply and increase Gooreh pumping station's unrefined oil and to pump the oil and export from Khark Island. The mentioned project was to improve 28600m oil exporting of 26" Gachsaran –Gooreh pipeline, from mileage 27/56, located in Siyamakan to mileage 45/1, located in Gooreh's pumping station, the project consist of pipeline direction grading and excavating, pig running and cleaning old pipeline, cutting pipe, sand blasting and primer coating, welding, wrapping 26" pipe, covering pipes, installing security system and side-foundation and finally hydro test and commissioning of the 26" pipeline.