Hi Srikanth, the score seems to be very good to secure a PSU call. Generally cutoffs vary every year, based on various factors like number of test takers, number of seats available etc. However by past records,

The cutoff for BHEL for SC category is around 55 and you are in a safe zone. 

The cutoff for BEML is around 50 for the SC category. 

You can refer to our link, where the cutoff details for various PSU have been mentioned in detailed. 

https://engineering.careers360.com/articles/what-are-gate-scores-for-psu-recruitment