Iran's 7th cross-country gas pipeline will be put into operation tomorrow.
The 902-kilometer pipeline is considered the first phase of the proposed Iran-Pakistan-India gas pipeline project, dubbed as the Peace Pipeline.
The pipeline, which extends from Assalouyeh in the southwest Iran to Iranshahr in the southeast, is projected to transfer natural gas from the South Pars field to some southern provinces as well.
President Mahmoud Ahmadinejad is scheduled to attend the inauguration ceremony, ILNA news agency reported.
The IPI route is designed to transport Iranian gas to Pakistan and India, though the signature of a final deal agreement has been delayed several times over price and political issues.
Iran, Pakistan, and India conceptualized the Peace Pipeline project in 1990s, to help boost peace and security in the region.
Due to the tense India-Pakistan relations, New Delhi stepped back from the later stages of negotiations, although it has never formally withdrawn from the project.
The IPI gas pipeline is a proposed 2,775-kilometer pipeline to deliver natural gas from Iran to Pakistan and India.
Iran's proved natural gas reserves are about 1,000 trillion cubic feet, of which 33 percent are as associated gas and 67 percent is in non associated gas fields. It stands for world's second largest reserves after Russia.