1.good impact strength 2.heat preservation & energy-saving ability 3.light weight 4.cost effective 5.high acoustic insulati Our PP-R ... : (1)PN2.0Mpa: Ø 20×2.8, Ø25×3.5, Ø32×4.4, Ø40×5.5, Ø50×6.9, Ø63×8.6, Ø75×10 ... ) Air conditioning facility 4) Pipeline network for swimming pool 5) solar energy facility of pipeline6) Agriculture or garden production transporting system, etc ...