... resistance * does not swell * can easily be welded PP Bar Characteristics:Polypropylene has good mechanical properties and stiffness even ... in high temperature (up to +100°C); also, PP is easy to weld.Typical Properties:# Higher temperature resistance# ... duct, cap, cover, valve, pump housing# Etching & electro-plating equipment.# Container, pipes, galvanizing, laboratory equipment. PP Bar