The installation procedure, steps and methods of metal bellows are as follows:

1. First measure the full length of the prepared metallic expansion bellows (including the connecting flange), draw the positioning center line for the installation of the metal expansion joint on the pipeline, and draw the side line of the bellows expansion joint according to the length of the bellows expansion joint (to the connecting flange) edge).

　　2. Cut the pipe according to the line, and consider the length of the flange and gasket when connecting the flange.

　　3. Connect the bellows expansion joint of the welding interface: use a temporary support and hanger to support the bellows expansion joint for alignment. The interfaces on both sides of the bellows expansion joint should be aligned at the same time, and spot welding should be carried out at the same time. After checking the correct position of the bellows expansion joint, the welding is carried out in sequence.

4. Connect the bellows expansion joint of the flange interface: first temporarily install the two flange gaskets on the bellows expansion joint, use the temporary support and hanger to support the bellows expansion joint, carry out the matching, and perform spot welding at the same time to check the position of the bellows expansion joint When appropriate, unscrew the flange bolts, remove the bellows expansion joint, weld the two flanges, clean the welding slag after welding, check the welding quality, and perform anti-corrosion treatment on the inner and outer welds after passing the test, and then lift the bellows expansion joint Perform the formal installation of the flange.