What to do with lost ductile iron pipes? Shouldn't there be a way to restore them? Today, the ductile iron pipe editor will teach you how to restore lost ductile iron pipes.

1. Campus Roundtable

By utilizing hydraulic or mechanical lifting methods, lift the internal pressure outward or apply pressure inward from the exterior of the pipe. To avoid damaging the cement mortar lining, use hardwood wedges that resemble the internal shape of the pipe. Restore the external appearance of the ductile iron pipe.

2. Tube Cutting:

The abrasive cutting machine used for tube cutting should be capable of mounting both cutting wheels and polishing wheels. Wheels made of corundum (silicon carbide) are particularly suitable for cutting tubes lined with cement. When cutting tubes, the tube should be placed on a level ground or on blocks of wood. The steps for tube cutting are: marking, cutting, and polishing.

3. Graphite Cast Iron Pipe External Coating Repair

Clean the surface with a brush and steel wool; dry with a gas torch if necessary, then use a steel brush to clean thoroughly before applying paint.

4. Graphite Cast Iron Pipe Lining Repair

a. Move the sections requiring repair to the bottom and discard the damaged parts.

b. Use a metal brush to remove any remaining cement chunks, moisten the edges of the cement layer to be repaired, and then wait for a few minutes.

c. Fill with cement mortar and compress it to the original thickness of the cement coating.

d. Apply a smooth finish to the surface and add some water or cover it with a damp cloth to prevent the cement from drying too quickly and cracking.