PP-R (Polypropylene-random copolymer) is a random
copolymer of polypropylene, often known as type
three polypropylene, by a small amount of ethylene
monomer and propylene polymerized by railless
copolymerization, it neutralizes the advantages of
PP-H, PP-B, can not only withstand a certain high
temperature, but also improve the low temperature
impact resistance. Become more ideal, can be widely
used in hot and cold water systems.