①Inner tube:Seamless black Nitrile, oil-resistant synthetic rubber, Thin outer cover
②Reinforcement:One layer high-tensile steel wire with protective middle coating layer
③Cover:Flame.weather.zone.oil.abrasion-resistant synthetic rubber
④Temperature:"-15℃ -  +100℃ " ( +5℉ - +212℉ )        Safety factor: 4:1
⑤Application:Low-pressure oil lines, Crane ,oil-field,mine,road construction machinery etc.