1.With ribs,the range of diameter from 2.5'' to 7'', 2.light weight, 3.good toughness 4.weather resistance 5.flat inwall 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 ...