... 100mm 4) carbon steel material HRPC brand double rods hydraulic oil cylinder 1) type:doubling acting2) inner/external thread3) ... manufacturer of hydraulic components, our products include:hydraulic ball valves, high pressure ball valves, threaded ball valve, flanged ball valve, ... stainless steel ball valve, carbon steel ball valve, oil cylinders, multi-stage cylinders, ect.Besides, we also can ...