After the two milestone gas transmission pipeline projects, Grissik-Duri Transmission (28”-536 km pipeline) and Grissik-Batam-Sakra (Singapore) Transmission (28”-470 km pipeline) in 1998 and 2003 respectively, completion, PGN continues to strive develop of what is known as the Integrated Indonesia Gas Transmission (IGT) System, which consists of the following transmission as well as distribution pipeline projects: