| abstract |
The invention relates to a device for processing the inner surface of a pipe, in particular for material removal, surface smoothing and removal of undesirable substances, wherein the device comprises a heating source and a supply device for a thermally and / or photochemically activated etching gas, whereby a heating of the portion of the pipe to be machined and contacting with the supplied etching gas, and means are also provided to remove the deposited from the inner surface of the tube elements. |