1.used for industrial cleaner with diameter 4'' 2. flat inwall 3.good toughness 4.weather resistance 5.long-term service The product of PVC hose pipe mainly used for industrial vacuum cleaners, has the range of diameter from 2.5''to 7'', featuring light weight, weather resistance,good toughness and long-term service, it reaches the ROHS standard. The product has been exported to America, Europe ...