- Recommended flow rate for the standard GRP pipe is 4 m/s maximum. Pipes allowing a higher flow rate can be manufactured by special design.
Ratings to be used in hydraulic calculations for SUPERLIT GRP pipes:
- Hazen–William flow coefficient: C = 150
- Manning coefficient: n = 0,009
- Colebrook–White coefficient:
k = 0,029 mm for the pipes manufactured by the continuous filament winding method.
k = 0,012 mm for the pipes manufactured by the centrifugal casting method.
- Performance of GRP pipes is not negatively affected by UV rays. Observing color changes on the surface, which do not affect the strength, is normal.
- Poisson ratio that can be used in standard engineering calculations for GRP pipes is between 0,22 – 0,29.
- Service temperature of standard GRP pipes is between -40 ̊C and +35 ̊C. Special pipes can be designed for service temperatures up to 50 ̊C.
- Thermal expansion and contraction coefficient of SUPERLIT GRP pipes in axial direction:
between 24 and 30 x (1/106) mm/mm/°C