PVC pipes for street sewerage STIGMA UK
Materials
Pipes and fittings are made of unplasticized polyvinyl chloride (PVC-U), which is one of the most widely used polymeric materials and also extremely tested, as it has been used for pipelines for more than 80 years.
Various additives such as ointments, fillers, pigments, UV and other stabilizers are added to the carrier material – polyvinyl chloride in order to achieve physical and chemical properties that will best meet the requirements.
Pipes are made of raw material with the following characteristics:
| density | 1,38 - 1,45 | g/cm³ |
|---|---|---|
| tensile strength | ≥ 45 | N/mm² |
| softening point temperature (Vicat) | ≥ 79 | °C |
| modulus of elasticity (E) | ≥ 3600 | N/mm² |
| coefficient of linear thermal expansion | ∼0,8x10 | K¹ |
| thermal conductivity coefficient | ∼0,16 | W/mK |
| surface electrical resistance | >10¹² | Ω |