Bharat Earth Movers Limited is a public sector company of India.
It was founded in the year 1964.
It’s headquarter is located in Bengaluru, Karnataka, India.
As you have asked about BEML and DMRC order, I writing some info below

According to a press release by BEML dated 10th June, 2015,

Defence Public Sector Undertaking & Major manufacturers of Metro Cars in the Country, BEML has received order worth Rs. 645 crores from DMRC (Delhi Metro Rail Corporation) for design, manufacture, supply testing and ordering of 74 no’s broad gauge Metro Cars for their RS-13 project (Rolling Stock).
In this regard, Shri H S Anand, Director (Rolling stock), Delhi Metro Rail Corporation sign up a Contract Agreement with BEML for supply of Metro Coaches in the presence of Shri S S Joshi, Executive Director (RS), Shri Amarendra Kumar, Chief Eletrical Engineer, DMRC, Shri P Dwarkanath, Chairman & Managing Director, Shri Aniruddh Kumar, Director, (Rail & Metro), Shri S Prasad, Executive Director, Shri B L Manjunath, Chief General Manager, BEML at Bangalore.

BEML has forayed into manufacture and supply of Metro Cars during 2002 and is the reliable Make in India partner in Metro Rolling Stock, having supplied so far more than 600 Metro Cars to Delhi Metro.
BEML has already supplied 150 Metro Cars to Bangalore Metro for their Phase I.
BEML is also the rolling stock supplier to the Jaipur Metro project and supplied 40 Cars, the revenue operations of which have commenced recently.
With this, BEML emerged as the preferred Metro Coach manufacturer in the country to cash out emerging opportunities in the Metro segment.