Turkmen gas is delivered to China's east coast through three trunk pipelines 1,833 kilometers long, passing through Kazakhstan and Uzbekistan.
Both countries are moving forward with a planned fourth pipeline - the 1,000-kilometer Line D, which also links Tajikistan and Kyrgyzstan - that will eventually increase annual supply capacity from Central Asia to 85 billion cubic meters (bcm) per year from the current 55 bcm.
Xiong predicts Turkmen gas flows to China will rise to nearly 70 billion cubic meters.
At a meeting on Friday, Jinping and Berdymukhamedov agreed to raise bilateral relations to the level of a "comprehensive strategic partnership.























