Minimax Viking Research & Development Gmbh

Mv Pipe Technologies Gmbh

Minimax Viking Patent Management Gmbh

Jan Ehlers

Andreas Rönpagel

Hanjo Diederley

Kai Zeugner

Jendrik Schütt

Andreas RÖNPAGEL

The invention relates to a method for producing a polymer-enhanced pipeline element, in particular of a fire extinguishing installation, and to a pipeline element and a pipeline system of a fire extinguishing installation. It is proposed according to the invention to provide a first a first and a second hollow body, to align in each case one encircling edge surface of the hollow bodies with one another, to weld the two hollow bodies to one another along the encircling edge surfaces such that an encircling weld seam is generated which has a root extending on the inside of the pipeline element, and to apply a polymer-based layer to the inside of the pipeline element, wherein the polymer-based layer completely covers the inside of the pipe element and the root of the weld seam.

Method for producing a polymer-improved pipe element and pipe element and pipe system comprising same

The invention relates to an apparatus () for producing a peripheral groove () in an end portion () of a metal tube (), in particular a metal tube () which is to be coated on the inside, the groove () being set up for receiving tube connectors, having a first, rotationally driven roller (), a second, freely rotating roller (), the first roller () having a roughened or structured surface () relative to the second roller (), a pressing device () for producing a relative movement between the first and second roller (), between a first and a second position, the rollers () assuming a first spacing from one another in the first position, which first spacing permits an introduction of a wall of the tube between the rollers (), and assuming a smaller, second spacing from one another in the second position, which second spacing is smaller than a material thickness (M) of the wall of the tube. It is proposed according to the invention that the first, driven roller () is set up to grip the tube from the outside in the second position and to rotate it, with the result that a peripheral groove () is pressed into the tube in the second position when the first roller () is driven.

Apparatus and method for producing a peripheral groove in an end portion of a metal tube

The invention relates to a method for producing a number of pipes () with a predetermined pipe diameter. The method includes feeding multiple pipe parts () with the predetermined pipe diameter to a welding station (), aligning in each case a first pipe part () and a second pipe part () coaxially with respect to one another and axially adjacent to one another, welding the pipe parts () by means of a fully encircling weld seam () to form a pipe run (), conveying the pipe run () to a cutting station () in a machine direction (A) downstream of the welding station (), and cutting off the number of pipes () in a respectively designated length from the pipe run ().

Method for producing a number of pipes having a predefined pipe diameter, pipe, and piping system

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Scharbeutz, Germany

Jan Ehlers