Determination of ring stiffness.

Test methods

A sample (pipe) is subjected to deformation at a constant speed and the curve representing the force according to deformation is obtained. The ring stiffness is calculated using the necessary force to deform the diameter of the pipe by 3%.

Products that applies

Plastics piping systems for civil works for water in:

Drainage and sewerage without pressure made of unplasticized poly (vinyl chloride) (PVC-U) EN 1401-1.

Buried drainage and sewage without pressure (structured wall) of:

Unplasticized poly (vinyl chloride) (PVC-U) EN 13476-1, -2, -3
Polyethylene (PE) EN 13476-1, -2, -3
Polypropylene (PP) EN 13476-1, -2, -3

Conveyance of water under pressure made of oriented unplasticized Poly (vinyl chloride) (PVC-O) ISO 16422

Supply of buried and above ground drainage, sewerage and irrigation water under pressure - Oriented unplasticized poly(vinyl chloride) (PVC-O) UNE EN 17176-2, -5 / UNE-CEN/TS 17176-3.

Plastics piping systems for building and discharge of waste water made Polypropylene (PP) EN 1451-1