Appropriate rush repair of cracks in ductile iron pipes

 

We have encountered a ductile iron pipe with a 25 cm compensator and a force hole at both ends of the crack in the pipe body. If the pipe is damaged carelessly in use, then we will adopt a sleeve with big or small head or replace a new pipe. Is it easy to repair the pipe?

 

1. The first thing we want is drainage. When draining, all valves from the beginning to the end of the straight pipe are closed, and the water stored in the crack is discharged as soon as possible.

 

2. After digging out cracked pipes, rush repair cards are used, but the revolutionary who can't block cracks is to prevent the cracks from continuing to extend.

 

3. To determine the exact location of the crack to the cutting work, it is necessary to cut off all the damaged parts. The length of the cut is between 100-300 mm. The marking pen is used to make the cutting marks.

 

4. The length of the new ductile iron pipe to be installed is 10-20 mm shorter than that of the original pipe. When cutting, it is necessary to ensure that both ends of the pipe are flat after cutting.

 

5. Soil repairing after pipe change. After cutting, the new pipe and the old pipe are coated with galvanized asphalt of the same raw material. If it is found that the lining is damaged, it is repaired together.

 

6. Install nodular cast iron bushing to ensure balance. Finally, press and tighten sealing treatment.