Satpura Express The most extensive narrow gauge 2'6" network in India was the Satpura lines of the South Eastern Railway, which in 1980 totalled over 1000 Km. Much of the network has since been converted, or is planned for conversion, to broad gauge. On 1983.03.26, ZE class 2-8-2 No.32 is in charge of the 'Satpura Express' between Jabalpur and Nainpur.