Bharat Wagon & Engineering Company Ltd (BEWL) was incorporated on 8th December 1978 as a Public Sector Unit by take over of two historical wagon manufacturing units of Arther Butler & Co and Britannia Engineering Co, both in Bihar at Muzaffarpur and Mokameh. The third industrial unit was added to the company in 1983-84 at Bela, Muzaffarpur for manufacture of LPG Cylinders. In the year 1986 the company became a subsidiary of BBUNL, Calcutta.

Both, Muzaffarpur and Mokameh Units are traditionally wagon manufacturing units. The lay-out, plant and machinery and locations are ideally suited for this product. With a rich experience of steel fabrication of over a half century, BWEL possess almost all the desired infrastructral facilities over heavy steel fabrication in house. A 316 MT Brake Press at Mokameh is a rare asset in this direction. All the three manufacturing works are self-sufficient in power by way of installation of captive DG sets. Adequate open space is available at both Mokameh and Bela Works. Operational ease is made possible by location advantage of railway connectivity close to the works.