As per your concern I will let you step by step way to login in HP has portal of Hindustan Petroleum Corporation Limited.

Here is the procedure

Visit my HPgas portal of Hindustan Petroleum Corporation Limited which looks like this

Hindustan Petroleum Corporation Limited



There at top right hand side page
You can see section of sign in
Then click on it a newpage will open
Which looks like this there you can get information easily

Hindustan Petroleum Corporation Limited, sign in




Address:-
Hindustan Petroleum Corporation Limited
Petroleum House, 17,
Jamshedji Tata Road,
Mumbai 400020