... 30 ~ 60 °CBack pressure 5 ~ 10 Mpa3.Enhanced PP PP can be enhanced substantially increase the tensile strength, stiffness, hardness ... and linear expansion coefficient, and maintain a good chemical resistance of PP, the price is relatively low, can be used as ... case, battery boxes, etc.; for the chemical industry, manufacture of metering pumps, corrosion-resistant pipe Road, and frame filter shell ...