Pipeline renovation is a project that is not encountered in home renovation. The gas pipeline needs to be approved by the gas management department for construction. The main water and sewage pipes and heating pipes that residents can dismantle.
When renovating the water supply pipeline, the pre-excavation of the pipe-piercing hole, the pipe threading of the pipe, and the pipe bracket shall be pre-buried according to the design requirements. When installing the water supply pipeline, it should be pre-installed first, and after the inspection is correct, the formal connection installation is carried out. The connection of the pipe is generally screwed. The pipe end is screwed onto the pipe fitting with internal thread and then connected with other pipe sections. The specific method is: firstly wrap the pipe joint with a hemp thread in the direction of the thread, and then evenly apply white. After the lead oil is directly wrapped with tape, press the joint at the joint and screw it into the 1/2 joint length. Then, the second section of the pipeline is treated in the same way, screwed into the joint for another 1/2 length, and screwed out. The white lead oil and hemp should be cleaned up in time. The construction of the heating pipe is the same as above.
The construction specifications for the pipeline renovation project are:
Perforation through the wall: According to the design requirements of the pipeline transformation, mark the center of the wall through the hole in the wall, mark it on the wall with a crosshair, punch the hole with the impact drill, the center line of the hole should be the pipe through the wall The center line is anastomosed and the holes should be straight.
Pipe Thread: This is the key to ensuring the quality of the installation. It is necessary to use a threaded plate to thread the thread on the inner wall of the nozzle. When the thread is lapped, the force is required to be uniform, and the twill and the chaotic thread cannot be formed, and the nozzle should be tapered.
Connection: The pipe should be cleaned before installation, and the inner wall is clean and free of debris. When installing, find the position and direction of each water pipe joint to ensure that the water equipment is properly connected after installation. When the hot and cold water pipes are installed in parallel above and below, the hot water pipes should be above the cold water pipes. When renovating the water pipeline, the indoor water supply main valve shall be closed and no water operation shall be carried out. After the transformation, test the water to see if the interface is closed and there is no blockage. After the pipeline is installed, the pipeline should be cleaned, and after applying anti-corrosion coating, apply silver powder paint.
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