Pipes and fittings for the outdoor sewerage
Nowadays the plastic pipes used for sewerage are applied habitually not occasionally. Their advantages result in better cost, as well as performance parameters versus the cast-iron ones. Plastic sewage pipes meet all requirements of modern indoor and outdoor sewerage.
The plastic sewage pipes are the most cost-effective solution for any real estate item. The assembling of such pipes requires no optional equipment; the transportation is costless due to the material lightweight. Reliability and long service life are the key advantages of plastic pipes, which are resistant to a corrosive medium impact; sustain heavy mechanical loads. Besides the plastic pipes are completely leaktight and possess high carrying capacity.
The PP-R pipes are considered the perfect ones among all plastic sewage pipes. The polypropylene pipes are corrosion-resistant (unlike polyvinylchloride and polyethylene) and sustain high-temperatures (more 90°С) of effluents very well.
The PP-R pipelines serve longer. Considering the minimum costs for maintenance their service life achieves 50 years or more. The undeniable advantages of polypropylene pipes specify their choice during utilities systems arrangement.
The basic mechanical and thermal behavior at 20°С
| Property | Method | UOM | Value |
| Density | The National Standard GOST 15139-69 | g/cm³ | >0,91 |
| Linear expansion factor | The National Standard GOST 15173-70 | 1,5×10´ | |
| Tensile yield limit | The National Standard GOST 11262-80 | MPa | 25-28 |
| Rupture strength | The National Standard GOST 15173-80 | MPa | 28-35 |
| Elongation at failure | The National Standard GOST /1262-80 | % | >100 |
| Conductivity | The National Standard GOST 23630-79 | W/m °С | 0,26 |
Chemical resistance of polypropylene sewage pipes
| Chemical | Concentration, % | 20°С | 60°С | 100°С |
| Acetone | 100 | r | cr | |
| Aniline | 100 | r | cr | |
| Butane, bottled | 100 | r | ||
| Butane, gas | 100 | r | r | |
| Calcium chloride | Standard | r | r | r |
| Calcium nitrate | Standard | r | r | |
| Liquid chlorine | 100 | n | ||
| Gaseous chlorine, crude | 10 | cr | ||
| Chloroform | 100 | cr | ||
| Chromium trioxide | Standard | r | n | |
| Glycerine | 100 | r | r | |
| Glycol alcohol | 100 | r | r | |
| Hexane | 100 | r | cr |
r – resistant, cr – conditionally resistant, n – non-resistant