| Contact Information | |
| Addressee | Deputy Director General |
| Address 1 | Ordnance Factory Board |
| Address 2 | 10-A, S.K. Bose Road |
| Address 3 | Kolkata - 700 001 |
| State | West Bengal |
| Pin | 700001 |
| Phone | 0091-33-22430472-0476 |
| Fax | 0091-33-22482927 |
| sec[dot]ofb[at]nic[dot]in | |
| Website | https://ofb.gov.in/ |
आखिरी अद्यतन : 26 June 2021
