Onky few PSU recruitment take place without GATE scores like following :

• Indian NavY
• UDHD
• HCL
• ECIL
• CPCL

Link for application below. 

http://www.gate2016.info/psus-not-through-gate/

However generally majorly many of  PsU shallneed GATE scores and cutoff list will be on minimum marks as per PSU criteria. 

Application link for all shared below via GATE scores. 

https://engineering.careers360.com/articles/psu-recruitment-through-gate/amp