- UNI EN 1092 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories designated by PN
- ISO 2536 Unplasticized polyvinyl chloride (PVC) pressure pipes and fitting, metric series Dimension of flanges
- UNI EN 1452 Plastic piping systems for water supply Unplasticized polyvinyl chloride (PVC-U)
- COLOR Matt gray in accordance with UNI EN 1452 P
- HEALTH RESCRIPTIONS Compliant with the requirements of Ministry of Health Decree N174 of 6/04/2004. Suitable for the conveyance of drinking water or water to be potable and other food fluids.