Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21C
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
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37/00
Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
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B21C37/06
of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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B21C37/10
Making tubes with; seams being neither welded nor soldered, e.g.; riveted seams
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B21C37/105
Supply, or operations combined with supply, of strip material
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B21C37/105

Methods for making layered tubular structures
11779981 · 2023-10-10 · ·

A process for winding a convolutely wound tubular structure having a machine direction, a cross-machine direction coplanar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions is disclosed.

METHODS FOR MAKING LAYERED TUBULAR STRUCTURES
20200282440 · 2020-09-10 ·

A process for winding a convolutely wound tubular structure having a machine direction, a cross-machine direction coplanar thereto, and a Z-direction orthogonal to both the machine- and cross-machine directions is disclosed.

Installation and method for continuously shaping longitudinally slotted pipes
10343201 · 2019-07-09 · ·

A method and an installation for continuously shaping longitudinally slotted pipes from a flat material minimizes or avoids markings in the material by evenly introducing into the roll stand the rolling forces of at least two rolls acting successively on the flat material and/or by allowing the two successively acting rolls to align freely relative to one another.