You will have to give Jee main to get seat in HBTU and PEC Chandigarh. And percentage criteria is given below -

HBTU - 45% marks (40% marks for SC/ST Category candidates) in aggregate in required three subjects.

Pech Chandigarh - Only those candidates are eligible who have passed class 12th with at least 60% marks in aggregate (55% in case of candidate belonging to Scheduled Caste/Scheduled Tribe/Persons with Disability (PwD)/Backward Class) in the above subjects taken together.

Hope this helps!!!