... pipe fitting : PP-R tool,ppr-fr-ppr pipe,PP-R coupling,PE-RT, tee, coupling, flange,PP-R elbow,PP-R tee... PPR pipe fitting ... corrosion resistance, anti-deposition and long service life, PP-R tubes also enjoy some other advantages ,like hygienicness, heat- ... friendly construction materials. Compared with aluminum multiunit tubes, PP-R tubes can be made into tubular products with larger calibers ...