There is no reference to pull-e-sirat anywhere in the Quran. Translation of the passage that you referenced is as below in context:
Quran 19:66-71
Translation by Javed Ahmed Ghamidi / Dr. Shehzad Saleem
Man [176] says: “Will I be taken out and given life again after I die?”Does man not remember that We have created him before when he was nothing.[177]So, by your Lord! We shall surely gather them too and their devils also. [178] Then We shall bring them forth around Hell such that they will be sitting on their knees [like criminals].Then from each group We shall sort people by separating those who were the most rebellious against the Merciful God.[179]Then it is We alone Who would also be the most aware of those most worthy of entering Hell.[180][O you who are being arrogant before the Merciful God,] each of one you shall surely enter it.[181] This is a matter decided [O Prophet] to fulfil which is the responsibility of your Lord.
Link to Translation