hello aspirant,

there is not many psus which hires candidate from production engineering through gate.

as production engineering is the part of mechanical engineering most of the vacancies are for mechanical engineering. try to get a rank with in 100 to get psus as number of total vacancies ranges from 20-30. but it totally depends on the companies on which year they would hire a large number of candidates. some companies for production engineering branches are like,

iocl, hpcl, mdl, npcil etc.