PP
Polypropylene (PP) is the versatile material for industry, chemicals and building services – with broad chemical resistance and higher temperature resistance than PE.
Application & properties
Polypropylene (PP) is the versatile material for industry, chemicals and building services – with broad chemical resistance and higher temperature resistance than PE.
- Chemical and process lines
- Heating and cooling (PP-R)
- Ventilation and wastewater
- Vessel and apparatus construction
Material properties
Typical values for first orientation. The standard and the delivery data sheet are decisive.
| Property | Value |
|---|---|
| Density | ~ 0.91 g/cm³ |
| Yield stress σ | ~ 32 N/mm² (PP-H) |
| E-modulus (short-term) | ~ 1.300–1.600 N/mm² |
| Thermal conductivity | ~ 0.22 W/(m·K) |
| Thermal expansion α | ~ 0.16 mm/(m·K) |
Standards, jointing & product forms
| Topic | Detail |
|---|---|
| Standards | DIN 8077/8078, EN ISO 15494 |
| Jointing | Butt, electrofusion & IR welding, flange; PVC-U/-C also solvent-cementing |
| Dimensions | d 16 – d 1200 mm · bis PN 16 |
| Short name / aka | Polypropylen · PP-H · PP-R |
We supply PP as a complete plastic piping system – pipes, fittings, valves and welding technology, on request including installation and welding service.
Frequently asked questions about PP
What is the difference between PP-H and PP-R?
PP-H (homopolymer) is stiffer, for industry/chemicals; PP-R (random copolymer) is tougher, for hot-water and heating installations.
Up to what temperature can PP be used?
In continuous service up to approx. 80–95 °C depending on pressure.
Is PP chemically resistant?
Yes, PP resists many acids, alkalis and salt solutions – ideal for process and chemical plants.
Request PP?
Medium, pressure, temperature, size and quantity are enough – we recommend the material and supply the complete system including fittings and welding technology.
All data are typical values for first orientation – without warranty. The applicable standard and the delivery data sheet/certificate are decisive.