I need to extend the pipe leading outside from my sump pump, but it's never been extended and it's just a piece of galvanized steel pipe, and the end of the pipe is flush with the brick exterior of my house. It's a female end, but the pipe threads have rusted and corroded a bit. Can I just insert a piece of pvc in there without threading it onto the steel pipe? Does pvc glue adhere to steel? Any advice would be appreciated.