| Business | Phone |
| Bergen Power Pipe 225 Merrimac St, Pittsburgh 15211 | (412) 323-1904 |
| E W Hartman Inc 103 Emily Dr, Pittsburgh 15215 | (412) 968-5774 |
| Pena-Plas Co 3917 Neville St, Pittsburgh 15224 | (412) 683-3665 |
| Pittsburgh Industrial Pipe Co 534 Harrogate Rd, Pittsburgh 15241 | (412) 784-8300 |