1. The steel pipe should be placed at a distance of not less than 1mm from the edge of the shaped pipe trench to prevent the collapse of the pipe trench from hurting and damaging the equipment.
2. When using the internal pairing device, the matching equipment, compressor equipment and pipelayer must be inspected and qualified before going online, and the use and operation are flexible. When using it, it should be operated according to the operating procedures.
3. Carefully check whether the equipment used by the group is in good condition before the group is paired. When the group is paired, a special person must be set up to command, and it is not allowed to point the nozzle with a finger to avoid hurting the finger.
4. In the construction, if the pipeline is raised with earth mound or rice husk with rice husk, the height must be firm and firm to prevent the pipeline from rolling and hurting people. Frozen soil and stones are not allowed to cushion the pipes.
