? Produced with materials resistant to shock and chemical and physical agents ? The fittings of the Bi-Bi Koll gluing line, available in multiple diameters ? Made with a quick coupling system that allows perfect adhesion and watertightness of the systems ? They comply to EN1329 and NF-E standards ? Produced with a mixture of self-extinguishing PVC and are therefore NF-Me branded ? The range of fittings is completed with WC drain fittings (siphons for toilets, sockets, as well as bends, adapters and flexible bends in white PVC) and aerators for waste pipes

The choice of the diameter of the PVC fittings depends on that of the pipes already installed on the PVC network must meet the standards of the sanitary elements, and a minimum diameter depending on the use: 32 mm for bidet, sink, water heater drain 40 mm for shower, sink, washing machine or dishwasher 50 mm for bowl 100 mm for toilet and general drainage