Agru Kunststofftechnik Gesellschaft M.b.h.

Alois Gruber Gmbh

Albert Lueghamer

Gerald Severa

Wolfgang Prangl

Erich Gruber

The invention relates to a weldable connecting elementfor connecting or joining thermo-plastic line elements. The connecting elementcomprises:

Weldable connecting element for connecting or joining thermoplastic line elements, and a welding assembly and a method for producing a welded connection

A method for connecting a thermoplastic line element to a connecting element includes the steps of: providing the at least one thermoplastic line element; providing the connecting element having a thermoplastic body wherein a heating element is embedded in the body for generating heat in a welding region for welding the body to the at least one line element; joining the connecting element to the at least one thermoplastic line element; providing a welding device for welding the connecting element to the at least one thermoplastic line element; welding the connecting element to at least one thermoplastic line element by generating heat in the welding region using the welding device. The welding of the connecting element to the at least one thermoplastic line element is stopped by the welding device before the end of the planned welding duration if an error criterion is met.

Method for producing a welded connection, and welding device

A floatable pipe combination has a plastic pipe having a rear longitudinal end, on which a rear flange region is formed, and a front longitudinal end, on which a front flange region is formed, a closing cover arranged on the rear longitudinal end, and a closing cover arranged on the front longitudinal end. A pulling device is arranged on the closing cover. At least on the front longitudinal end, a flange protection with an outer protective covering is arranged. The outer protective covering is formed to radially project with respect to the outer diameter of the plastic pipe.

Floatable pipe combination

A method for assembly of a fitting with a pipe piece using a flange connection disposes centering elements on the fitting at a distance from one another on the circumference, and centering bolts are inserted into centering openings of the centering elements and into accommodation openings of the fitting. A collar surface of the pipe piece is aligned on alignment surfaces of the centering elements. Subsequently, a loose flange ring is aligned on the centering bolts via its passage openings. The fitting and the pipe piece, which are aligned with one another, are connected with one another by the flange ring as well as connection elements, and in this regard, the centering elements and centering bolts are removed. Also a method having a similar effect, for assembly of two pipe pieces uses a flange connection, as does a centering apparatus for assembly.

Method for joining pipe pieces and centering device for the joining process

A concrete-protecting panel with integrated undercut protuberances which has an enhanced resistance to groundwater pressure. The protuberances or wing-element pairs ( ) of the plastic panel ( ) have spread wing elements ( ) which may spread open even further in their top region . The wing elements are connected to one another by a supporting web , of which the height is at least 70% of one wing-element pair. The wing-element pairs are fastened on the base plate of the protuberance-containing panel via a foot widened in an arcuate manner.

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Sierning, Austria

Albert Lueghamer