The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2026
Filed:
Aug. 22, 2022
Benteler Steel/tube Gmbh, Paderborn, DE;
BENTELER STEEL/TUBE GMBH & CO. KG, Paderborn, DE;
Abstract
The present invention provides a method for producing a steel tubular product which includes shaping a steel tube into a pre-geometry by non-rotationally and axially moving the steel tube into an outer tool to reduce an outer diameter of the pre-geometry in an end region in the outer tool. An inner diameter is calibrated with the pre-geometry arranged within the outer tool by introducing an inner mandrel into the end region of the pre-geometry, and pressing against the outer tool to calibrate the inner diameter via a shaping. The pre-geometry is non-rotationally removed from the outer tool, and the inner mandrel is non-rotationally removed from the pre-geometry. The pre-geometry is moved axially into a drawing tool, thereby shaping the pre-geometry into the steel tubular product with a rotationally symmetrical outlet opening centrally in the end face. The steel tubular product is then removed from the drawing tool.