Hydrostatic test of casing pipe:
①. Use high-pressure water gun to clean the inside of the tube;
②. The surface of the thread must be coated with lubricant to minimize damage during the hydrostatic test (plugging and unloading);
③. Correctly clamp the workpiece, check whether the various parts of the equipment are running normally;
④. Check whether the protective device is safe and reliable;
⑤. Water injection and suppression, the suppression time is 7 seconds;
⑥. Fill in "Hydrostatic Test Report of Threaded Sleeve" carefully according to the workpiece number.