With accurate temperature, time melting, rapid absorption of active ingredients and other additives, fine features. PVC-U Drainage Fittings:Expansion Joint. BS Standard,High Flow Capacity, Corrosion Resistant,Low Installati Features:Descriptions: Expansion Joint (HUB×GASKET)Material: unplasticized poly (Vinyl chloride)Colors: white and other colors availabe upon requestStandard: BS 5255/ BS 4514 ...