O PN-25 equivale a série de tubo S 2,5.
| TU202503 | Tubo PN-25 Ø 20 mm – 3 mts | |
| TU252503 | Tubo PN-25 Ø 25 mm – 3 mts | |
| TU322503 | Tubo PN-25 Ø 32 mm – 3 mts | |
| TU402503 | Tubo PN-25 Ø 40 mm – 3 mts | |
| TU502503 | Tubo PN-25 Ø 50 mm – 3 mts | |
| TU632503 | Tubo PN-25 Ø 63 mm – 3 mts | |
| TU752503 | Tubo PN-25 Ø 75 mm – 3 mts | |
| TU902503 | Tubo PN-25 Ø 90 mm – 3 mts | |
| TU1102503 | Tubo PN-25 Ø 110 mm – 3 mts |
