Xi 'an Heating Pipe Network Replacement Process

1. First contact Xi 'an pipeline property right unit, find out the name of pipeline transportation medium, and cut off the pipeline from the original device.

2. Secondly, after the pipeline is perforated, exhaust the residual gas, excavate the earthwork under pressure until the pipeline is completely exposed, select a higher place, cut the pipeline with a saw bow, and properly discharge an appropriate amount of nitrogen at the saw bow and pipeline cutting place for protection. There is no open fire operation within 50 meters of the workplace, and it is equipped with 10 dry powder fire extinguisher.

3. Fire-proof and antistatic asbestos cloth is laid around the pipeline opening. Workers wear anti-static cotton overalls, keep air circulation on site, and can replace heat pipes.