VESDA Aspirating Pipe and Fittings are produced in ABS under a stringent quality control system approved to BS EN ISO 9001, EN54-20 and EN61386-1 Class 1131 ABS (Acrylonitrile Butadiene Styrene) is a robust polymer, which has the most suitable physical properties for aspirating detection, optimising performance with tensile strength, chemical resistance, ductility, weatherability, heat stability and processability.