Russia's OAO Gazprom, the world's largest gas producer is in talks with China National Petroleum Corp to finalize a gas pipeline crossing from Russia into China, China Daily reported. The pipe will cross the border in either Xinjiang province in the west or Heilongjiang province in China's northeast. The line would have a capacity of between 20 and 30 billion cubic metres of gas annually. Gazprom would build the Russian sections while CNPC would lay the Chinese pipeline. If the western route is chosen it will likely link up with China's forthcoming west-to-east pipeline, which will transport 12 billion cubic metres of natural gas from the Tarim Basin in Xinjian to Shanghai.