Washing Machine Outlet Pipe is a flexible hose that connects the washing machine to a drain or standpipe. It is responsible for carrying the dirty water from the washing machine to the drain or sewer system. The outlet pipe is typically made of rubber or plastic and can be either black or white in color. To clean the outlet pipe, you can use a mixture of vinegar and baking soda or a commercial pipe cleaner. Proper maintenance of the Washing Machine Outlet Pipe can help prevent clogs and other issues with your washing machine.