1 Baidu and equipment must be in charge of special personnel, and operators must be certified to work. 2. Before using the pipe threading machine, check whether the four blades are installed in sequence, whether the connection is firm, whether the lubrication of each running part is good, and whether there is any leakage phenomenon, and the empty car test operation is confirmed to be correct, before entering the normal operation. 3. When processing steel bars, you must use the steel bars cut by a toothless saw. 5. When threading, you must ensure the flow of coolant and replace the coolant in time. When threading in winter, you must pay attention to heat preservation and night water discharge to prevent water pumps. The motor is damaged.