Production units

Indian Railways manufactures much of its rolling stock and heavy engineering components at its six manufacturing plants, called Production Units, which are managed directly by the Ministry. Popular rolling stock builders such as CLW and DLW for electric and diesel locomotives; ICF and RCF for passenger coaches are Production Units of Indian Railways. Over the years, Indian Railways has not only achieved self-sufficiency in production of rolling stock in the country but also exported rolling stock to other countries. Each of these six production units is headed by a General Manager, who also reports directly to the Railway Board. The six Production Units are:-

Sl. No	Name	Abbr.	Year Established	Location	Main products
1.	Golden Rock Locomotive Workshops	GOC	1928	Trichy	Diesel-electric Locomotives
2.	Chittaranjan Locomotive Works	CLW	1947	Chittaranjan, Asansol	Electric Locomotives
3.	Diesel Locomotive Works	DLW	1961	Varanasi	Diesel Locomotives
4.	Diesel-Loco Modernisation Works	DMW	1981	Patiala	Diesel-electric Locomotives
5.	Integral Coach Factory	ICF	1952	Chennai	Passenger coaches
6.	Rail Coach Factory	RCF	1986	Kapurthala	Passenger coaches
7.	Rail Wheel Factory	RWF	1984	Bangalore	Railway wheels and axles
8.	Rail Wheel Factory	RWF	2011	Chhapra	Railway wheels and axles