As you want to download Application Form for Issuance of Caste (OBC) Certificate of West Delhi Municipal Corporation, so you should not to go anywhere.

I am giving application form here:

West Delhi Municipal Corporation Issuance of Caste (OBC) Certificate Application Form





You have to fill following details in this Form:
e-District Registration Number
UID (AADHAAR) No
Name of Beneficiary
4. Name of Father
5. Name of Mother
6. Name of Spouse
7. Gender
Date of Birth
Mobile No
Present Address (Address of Parents in case of Minor )
House Name/No
Locality
Sub- division
State
PIN Code
Sub-Locality
Village/Town
District
Country etc.