Alataw Pass Duoadu Pipeline Co Ltd planned to develop China-Kazakhstan LPG Cross-border Pipeline Design Engineering Project, from Kazakhstan to Dushanzi. China Petroleum Pipeline Engineering was the design consultant. The length of the pipeline was nearly 300 km, with a diameter of 273 mm, with a design pressure of 9 mpa. There were 4 stations and 13 circuit block valve chambers along the project. The consultant would undertake the survey, preliminary design and all design tasks of production drawings. The project responded to Belt and Road Initiative and It was of great significance for promoting the economic and social development and for meeting China's import demand of LPG.