To provide an equipment connection pipe for reliably connecting equipment to a pipe in a limited space while preventing effluent from getting stuck in the equipment connection pipe, and to provide a pipe unit using the same.

The equipment connection pipe 1 is formed of a flexible material having a bellows all over the periphery. It is easily elongated in the specified peripheral direction by making the bellows higher in the specified peripheral direction than in the other peripheral directions, and it is easily bent in the specified peripheral direction by making the bellows lower in the specified peripheral direction than in the other peripheral directions. The specified peripheral direction where the bellows is lower is downside in view from the equipment connection pipe in the mounted condition, thus preventing passing materials from getting stuck in the equipment connection pipe.