1.Meetregulations of form 2
2.Liquidresistance: immerse a sample of ventilation hose in #120 gasoline at a roomtemperature of 23+/-2 Celsius degrees, weight change of the sample after 24hwas not greater than +/-10%.
3.Gas permeation test: take a ventilation hosewith length of 900mm, feed propane-containing gas in concentration of more than98% into the ventilation hose, then exert pressure of 55.99kPa in the sample,after ventilating for 24h, and measure the gas amount permeating the sample in6h, keep it no more than 5ml/h.
Small bending radius, bending resistance
Resistance to abrasion, collision and tear
High elastic return memory effect
Accomodate flammable objects to flow, beingwelded
And resistance to oils and part ofnon-corrosive chemicals
Burn into ashes 100%, and approvedenvironment-friendly products