Method for strengthening and calibrating a pipe segment

The invention relates to a method and a device (60) for producing an outer pipe (12) of a telescopic support, to the telescopic support, and to the outer pipe (12) contained by the telescopic support. For reasons of weight and stability, the outer pipe (12) can be produced from a standardization gal...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ANDREE JURGEN, SPECHT JURGEN
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE FIXED CONSTRUCTIONS FORMS HANDLING BUILDING MATERIALS ON THE SITE MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS SCAFFOLDING SHUTTERING TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	The invention relates to a method and a device (60) for producing an outer pipe (12) of a telescopic support, to the telescopic support, and to the outer pipe (12) contained by the telescopic support. For reasons of weight and stability, the outer pipe (12) can be produced from a standardization galvanized steel pipe having a large outside diameter and small wall thickness. In the method, a pipe segment (76) of the outer pipe (12) is expanded by means of a die (62) and then narrowed back to the original outside diameter by means of a ring (64). A strengthening of the pipe segment (76) and a calibration of the outside diameter of the pipe segment (76) can thereby be achieved. An external thread (36) can be rolled onto the pipe segment (76).