... ,OEM 5.Manufacturer supplier PPR tubes, also called random copolymerized polypropylene(type 111)tubes, are a new generation of ... resistance, anti-deposition and long service life, PP-R tubes also enjoy some other advantages ,like hygienicness, heat-resistance ... by bacterium ;Corrosion Resistant: resist chemical matters or electron chemical corrosion;Lower Installation Costs: light weight and ease ...