PPH pipe and PPR pipe are both pipes made of polypropylene, but they have several differences as follows.
Different materials: PPH pipes use polypropylene copolymers, while PPR pipes use random copolymers of polypropylene, which have different molecular structures.
Different temperature resistance: PPH pipes usually have a temperature range of 0°C-90°C, while PPR pipes usually have a temperature range of -10°C-95°C. Therefore, PPR pipes are more durable than PPH pipes in low temperature environments.
Different compressive performance: PPR pipes have good compressive performance and their compressive strength can reach PN25 or PN32 level, while PPH pipes are weaker and their compressive strength is usually below PN16.
Different coefficient of thermal expansion: PPR pipe has a smaller coefficient of thermal expansion than PPH pipe, so PPR pipe has less deformation in case of thermal expansion and contraction.
Different colors: PPH pipe is usually white or gray, while PPR pipe is usually green or white.
In conclusion, PPH pipe and PPR pipe are both high quality pipes with certain characteristics and application scenarios, and the right material should be selected according to the actual needs; PPR pipe is suitable for some demanding piping systems, such as hot water piping, heating piping, etc., while PPH pipe is suitable for some low pressure, general temperature piping systems, such as drainage piping, chemical piping, etc.