Cracking

Cracking or pipe cracking is used if the old pipeline is severely deformed or if the interior measure of the old pipe proves to small for the new pipe designed. A hydraulic expander used a bursting head a shatters the old pipe and enlarges the path for the new pipe.

A specific characteristic of cracking is the fact that the diameter of the new pipe may be the same size or bigger than that of the old one.

Advantages of cracking:

• pipes made of material that can be broken, such as clay, concrete or cast iron, may re replaced using the cracking method;
• the throughput capacity of the new pipe equals or even exceeds that of the old pipe, if the diameter of the existing pipe is upsized;
• cracking may be used for renovating water, sewerage and gas pipelines;
• compact equipment allow working also in constrained circumstances.

Diameters: 100 to 450 mm.