Yes they are eligible for the public sector unit through GATE marks.the followings are the list of the PSU :-

The list of PSUs that a CSE candidate can apply though GATE are :-

BEL,IOCL,SAIL,HEC,HAL,BPCL,ONGC,VIZAG STEEL PLANT,ECIL

In GATE examination , you must secure a rank within 150 to get call letters from the above listed PSUs . All PSUs have a fixed pay band for freshies .