Linux – Centos how to set default permissions for specific folder

I have a centos server that one of my apps creates files in a tmp folder. The files are always created with the permissions r–r–r– and i need all the new files in this directory to be created with at the least, the permissions rw-rw-rw-.

How can i achieve this?

EDIT
Here's my current setup. I've chmod 777 everything in the /page folder. Then when i run something in my app, it creates or modifies files and they are not rw-r–r–.

/page

ls -ald
drwxrwsrwx 2 tomstest psacln 12288 Aug  2 20:32 .

/page

ls -al
-rw-r--r--  1 tomstest psacln     2 Aug  2 20:32 size
-rwxrwxrwx  1 tomstest psacln     5 Jul 20 16:58 version

My app errors I think because of the line that is rw-r–r–.