NEW DELHI (Agencies) A day after sealing final pacts with Iran on a long-talked gas pipeline, Pakistan on Monday said it will welcome India joining the project and will guarantee safe delivery of the fuel. With New Delhi boycotting talks on Iran-Pakistan-India pipeline over pricing and security concerns, Iran and Pakistan on Sunday signed government guarantees - the last of a series of agreements - that commits the Islamic republic to supply its eastern neighbour with natural gas from 2014. We have kept open the option of India joining the project (at a later date). We will welcome India (in the project), Muhammad Ejaz Chaudhry, Additional Secretary in Pakistans Ministry of Petroleum and Natural Resources, told PTI from Islamabad. We yesterday (Sunday) signed government guarantees, letters of comfort and condition precedents for the project, Ejaz Chaudhry said. Pakistan had in July last year signed a gas sale and purchase agreement and in March signed among other pacts a gas transportation agreement (GTA). The GTA, which has been notarised in Paris, provides for internationally acceptable transit arrangement for gas to be supplied to India. We will stand guarantee for safe delivery of gas (at Pakistan-India border), Ejaz Chaudhry said. Of the 1,035-km length of the pipeline in Pakistan, only 100-odd km would be exclusively for carrying gas to India while the rest would be transporting fuel for both Pakistan and India, he said, pointing that it was in Pakistans own interest to protect the pipeline. Ejaz Chaudhry said Pakistan will now start work on the pipeline from Iran-Pakistan border to its consumption centres. We expect first gas (from Iran) to flow by December 2014, he said. The estimated cost of the project was $1.2b inside Pakistan from its point of entry in Balochistan up to Nawabshah, the hub of the countrys gas pipeline system. Iran will supply 21.5 million cubic meters a day of gas to Pakistan for 25 years. The deal can be extended by five years and the volume may be increased to 30 million cubic meters on Pakistans request. The Persian Gulf nation has so far constructed 907km of the pipeline from the industrial hub Assaluyeh in southern Iran. It will now start the second leg of the pipeline towards Pakistan, about 300km in length, that will carry natural gas from Irans South Pars field. South Pars, which extends from Qatars North Field, forms the largest known gas deposit in the world. Pakistan plans to use the gas purchased from Iran for its power sector, the Additional Secretary said.