New Delhi : Facing a prospect of being split into two, GAIL India on Thursday said it supports reforms like unbundling of gas marketing and transportation business but such a move globally has been done only after gas market has matured. In a point by point rebuttal to critics, its Chairman and Managing Director B C Tripathi said GAIL is the only company in the country that has built multiple gas pipelines in last one decade while the private sector even after getting authorisation has not laid an inch. Also, it has thrown open all of the 11,400-km of pipeline length to third parties for accessing on common carrier basis, he said. In mature markets, monopoly gas transporting and marketing companies have been unbundled or split after the share of natural gas in energy mix has reached at least 15 per cent and a well-connected pipeline network built. Also, domestically produced gas forms bulk of consumption.