There are many PSUs recruiting through GATE and providing good pay scale. Their cutoff vary accoiding to the number of vacancies. Most of the PSUs conduct their separate interview after shortlisting through Gate. Some might not take. 

Airports Authority of India (AAI): marks - 53.33

ONGC: general - 864, obc- 745, sc- 682 and st- 629.

BARC: 807 for all category.

BBNL: general,obc - 61.93, sc- 50.59, st- 48.82. 

The above cutoffs are of previous years. 

other PSUs: HAL, RITES, HPCL, IOCL, BPCL, NTPC, PGCIL, NLC INDIA LIMITED, DRDO, DMRC and few others.