Yes, this is the rule in most of the colleges. While it totally depends on the campus and the company which came for recruitment, but a minimum of 60 percent is required throughout for most of the companies out there.

Since this is a company criteria, thus it is applicable to all the courses including M.Tech, so essentially, yes, the 60% criteria will also be applicable to the M.Tech students of the college.

Hope I have answered your question. All the best!