Indian Ordnance Factories Board
Address: Ayudh Bhawan
10-A, S. K. Bose Road
Kolkata – 700001, India
Telephone Nos. – 0091-33-22430472-0476, 0091-33-22485077-5080, 0091-33-22489121-9127
Telephone (D): 0091-33-22481209
Fax : 0091-33-22482927
Email : sec.ofb@nic.in
Websit: ofbindia.gov.in