Discover a Wide Range of Diploma Courses in Chennai at HIET: HIET Polytechnic College was started in the year 1979 at No. 40 G.S.T. Road, St. Thomas Mount, Chennai – 600 016. It is affiliated to the Directorate of Technical Education, Government of Tamil Nadu, to conduct Diploma Courses in Engineering (3years) vide G.O.M.S. No. 536 Dated: 5/4/79 and approved by AICTE, vide F.No. So... https://www.hiet.in/