Hey Ritik.

Yes, you can get admission in HBTI, Kanpur after diploma too by taking the entrance test conducted by UPSEE for Lateral Entry admissions directly to the Second year. 

You can use the link below for any other details.

https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://upsee.nic.in/publicinfo/Handler/FileHandler.ashx%3Fi%3DFile%26ii%3D215%26iii%3DY&ved=2ahUKEwjZiMCn7LLdAhVB7WEKHQ-2DSUQFjALegQIBxAB&usg=AOvVaw1hDPoPXv4L1tuDc1axnLqD

Best of luck!