As per your score and previous year cutoff, the call from following PSUs you will get. Also, your score is at boundary, so there might be chances that you don't get call from some of the below PSU's. :-
HAL
HPCL,ONGC
OCES/ DGF
The last year cutoff for ONGC/OCES is 809. To know more about your chances of getting other colleges check out the PSU/college predictor link below:
GATE 2020 College Predictor with PSU Chances – Know your admission cha ...
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