PU Pneumatic hose suitable for air, general industrial water, non-corrosive oils. To maintain a long service life, will face used on the rated working pressure and ambient temperature. As the temperature rises, the working pressure should be reduced, if it exceeds the limit, the hose may be broken. Fluid temperature is too high or corrosive chemical fluid costs may lead to polyurethane air hose rupture, ambient temperature is too high or workspace chemical gases may cause the hose to crack, storage in damp places or deposit side of too long, it will make the hose hydrolysis or aging, may lead to breakage