| Business | Phone |
| Cincinnati Piping Supply Inc 5583 Creek Rd, Cincinnati 45242 | (513) 793-6015 |
| Harrington Plastics/Corro-Flo 1227 Hill Smith Dr, Cincinnati 45215 | (513) 771-0880 |
| Main Line Supply Co 121 Hosea Ave, Cincinnati 45215 | (513) 242-8700 |
| Pipe Products 1223 Budd St, Cincinnati 45203 | (513) 621-2271 |
| Robert James Sales 9643 Inter Ocean Dr, Cincinnati 45246 | (513) 874-6960 |
| Robinson Pipe Cleaning Co 7728 Reinhold Dr, Cincinnati 45237 | (513) 794-0101 |