... 4) stroke: customized HRPC brand double acting hydraulic stell oil cylinders 1)carbon steel material2)working pressure 70/140 kgf/cm23 ... stainless steel ball valve, carbon steel ball valve, oil cylinders, multi-stage cylinders, ect.Besides, we also can produce or develop aluminum ... ) CUSTOMIZEDDetails of HRPC brand double acting hydraulic stell oil cylinders HRPC brand double acting hydraulic stell oil ...