For internal systems of distribution of hot and cold water in buildings, for systems of floor and central heating, ventilation. Polypropylene pipe with nominal pressure rating PN-16 – the most suitable for cold and hot water supply systems with temperatures up to +60℃, and a nominal working pressure of 16 bar (16.32 kg/cm²).
| Size, mm | Article | Nominal pressure | Ø ext. mm | Ø int., mm | Thicknesses. walls, mm | Number |
| 20 × 2.8 | KR.PPSS20 | PN-16 (1 pcs = 4 m) | 20.0 +0.3 | 14.4 +0.3 | 2.8 +0.5 | 100 r.m. / 25 pcs |
| 25 × 3.5 | KR.PPSS25 | PN-16 (1 pcs = 4 m) | 25.0 +0.3 | 18.0 +0.3 | 3.5 +0.6 | 60 r.m. / 15 pcs |
| 32 × 4.4 | KR.PPSS32 | PN-16 (1 pcs = 4 m) | 32.0 +0.3 | 23.2 +0.3 | 4.4 +0.7 | 40 r.m. / 10 pcs |
| 40 × 5.5 | KR.PPSS40 | PN-16 (1 pcs = 4 m) | 40.0 +0.3 | 29.0 +0.3 | 5.5 +0.8 | 20 r.m. / 5 pcs |