Cutting of Steel Structures
Application of a high DC current and a flowing gas between an electrode and the object to be cut generates heat to melt and cut the object.

The electrical arc caused by applying a high DC current between a high-speed rotating disc blade and an object to be cut generates heat and cuts the object by melting and removes the melted metal by the rotative force of the disc blade.

Pressing a rotating disc saw against the inner surface of a pipe causes plastic deformation of the pipe and this cuts the pipe without causing chips.

Objects are cut via the explosive energy generated from the detonation of shaped explosives with a V-shaped depression and copper linear.