{"number":"US12703021B2","kindCode":"B2","documentType":"grant","title":{"original":"Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product","english":"Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product"},"abstract":{"original":"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.…","english":"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.…"},"applicants":["BENTELER STEEL/TUBE GMBH"],"inventors":["DANIEL LUECKE","DIRK TEGETHOFF","MARCEL WELLPOTT"],"filingDate":"2022-08-22","publicationDate":"2026-08-11","grantDate":"2026-08-11","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12703021B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12703021B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12703021B2","ja":"https://downloadpatent.com/ja/patent/US12703021B2"}}