| W01 | Repair and Maintenance of Track, Bridges and Culverts | Nationwide |
| W02 | Renovation/Upgrade of Railway Stations and other buildings together with associated facilities | Nationwide |
| W03 | Manufacture/Supply and Commissioning of Locomotives, Coaches, Wagons, Railway Inspection Vehicles and Cranes (Narrow Gauge and/or Standard Gauge) – OEMs and/or their representatives only | Nationwide |
| W04 | Rehabilitation of Locomotives, Coaches, Wagons, Railway Inspection Vehicles and Cranes (Narrow Gauge and/or Standard Gauge) | Nationwide |
| W05 | Procurement/Rehabilitation and Installation of Equipment for Mechanical/Electrical, S&T, Security, Printing, Operations, Civil and ICT facilities | Nationwide |
