China's electrified railway mileage has surpassed 30,000 kilometers, ranking the second in the world, said the China CREC Railway Electrification Bureau Group (CCREBG) on Saturday.

It achieved the goal with the completion of a 1,422.2-kilometer electrified railway line which connects Beijing and Lehua in south China's Jiangxi Province on Saturday, according to the CCREBG.

The project, involving an investment of more than 7.6 billion yuan (or US$1.112 billion), will increase the trains' speed from 120 kilometers to 160 kilometers per hour and raise the transportation volume from 3,500 tonnes to 6,000 tonnes by each train.

The operation of this railway links the electrified railways in the country's central and eastern regions, and it would help to ease transportation strains on the Beijing-Kowloon Railway, according to the CCREBG.