... automatic oil pipe pressure tester. Performance of Hydrostatic Tester This machine is mainly used for tubing and casing hydraulic testing, oil ... 60mm-508mm Length of application pipe,8-12m Pressure testing,0-70Mpa Pressure holding time,5S-1000S(adjustable) Testing medium, ... exhausting——close the water suppling and air exhausting valves——pressure setting——testing and recording——unloading and the water ...