①Inner tube:Seamless black Nitrile, oil-resistant synthetic rubber
②Reinforcement:One or two braids of high-tensile steel wire, 1/4"-1/2" : 1  layer wire,   5/8"-1" : 2 layers wire
③Cover:Flame.weather.zone.oil.abrasion-resistant synthetic rubber
④Temperature:"-15℃ -  +100℃ " ( +5℉ - +212℉ )        Safety factor: 4:1
⑤Application:Low.Medium-pressure oil lines, Crane ,oil-field,mine,road construction machinery etc.