Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Verfahren, zuerst lose auf Heizkoerperrohre geschobene Rippen durch Ausstrecken des Werkstoffes der gegen eine ebene Platte sich stuetzenden einzelnen Rippen radial nach innen an dem Rohrmantel zu befestigen