SISTEKO : Polyester pipes
Pipes made of polyester and reinforced with glass fibres – reinforced polyester (GRP) have a broad range of applications. They are designed for installation in sewage systems to remove waste and precipitation water, in fire fighting systems, in hydro power plants, in industrial technological liquid transport systems and chemical or other waste discharge systems, in seawater desalination systems, in irrigation systems and in potable water or rainwater networks.
Advantages of polyester pipes
- High load bearing capacity with small specific weight
- Totally impermeable to water and non-porous
- Superbly smooth internal surface layer
- Excellent hydraulic performance
- Non-corrosiveness and high chemical stability
- High resistance to erosion
- Simple pipe joining, i.e. shorter installation times
- Lower costs of pumping in pressurised networks
- Low maintenance costs
- Low transport costs
- Short delivery times
- Long service life
Technology
Our polyester pipes are manufactured by applying a continuous spinning process, which is, at present, the state-of-the-art polyester pipe manufacturing process. This process allows for continuous introduction of reinforcement in the circumferential direction. This technology results in a very compact laminate that enhances the effects of all the three basic raw materials: glass fibres, silicate sand filler and polyester resin. The pipe strength is significantly increased due to glass yarn and chips. Sand filler in the core serves to increase the wall thickness and in turn to increase pipe stiffness. The system to apply resin into the outer and inner layer supports the use of different special resins for special purpose applications. As an example, the inner surface may be lined with resin suitable for handling corrosive substances, while the structural and outer laminate layers are treated with standard polyester resin.
Technical specifications
| Basic material | polyester reinforced with glass fibres (GRP) |
|---|---|
| Medium temperature | -60°C do +120°C |
| Standard length | 6 and 12 meters |
| Corrosion protection | not necessary |
| Pipe diameters (DN) | 80 – 2400 |
Stiffness classes (SN) | 1250 – 10 000 |
| Pressure classes (PN) | 1 – 32 |
| Standards | SIST EN 14364, SIST EN ISO 3216, SIST EN 1228, SIST EN 1393, SIST EN1226, ISO 10468, ISO 10471, SIST EN 1119 |
