输二线工程－中石油Second west-east gastransmission project - petrochina基本参数basic parameter： 输二线的管道全长为8794公里，其中，干线全长4945公里，1219mm，采用X80钢级管材； 8条支干线全长3849公里，采用X70钢级管材。全线用钢量440万吨，其中X80钢材量278万吨。 The length of the second line ofwest-east gas transmission pipeline is 8794 kilometers, of which the length of themain line is 4945 kilometers and the pipe diameter is 1219mm. X80 steel pipe isadopted.The total length of 8 branch arteries is 3849 kilometers, using X70 steelgrade pipe.The steel used in the whole line has a volume of 4.4 million tons, ofwhich X80 has a volume of 2.78 million tons. 最高设计压力12MPa。 Maximum design pressure is 12MPa. 共22座站场。 A total of 22 stations. 输二线配套建设3座地下储气库，分别为河南平顶山、湖北盐穴储气库和南昌麻丘水层储气库，总库容45亿方，工作气量22亿方。 Threeunderground storage reservoirs, with a total capacity of 4.5 billion cubic meters and aworking gas capacity of 2.2 billion cubic meters, are built in the second line of thewest-east gas transmission line, respectively in pingdingshan of henan province,yunying salt point of hubei province and water layer storage of nanchang maqiu. 1座200万吨/年LNG调峰站。LNG peak-shaving station