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
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
B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/15—Making tubes of special shape; Making tube fittings
Verfahren zur kontinuierlichen Warmbehandlung und nachfolgenden kontinuierlichen Ummantelung eines langgestreckten Grundmaterials mit einem geschmolzenen Mantelmetall
Verfahren zur erzeugung der endabmessungen bei der her stellung eines geschweissten praezisionsrohre fuer kern reaktoren und dorn zur ausuebung des verfahrens
Verfahren zur Verlegung von an sich in der Werkstatt fertig hergestellten rohrfoermigen Leitern, insbesondere zur UEbertragung von elektrischer Energie
Durch einen Schutzmantel aus Aluminium gegen Abbrand geschützte negative Graphitelektrode für nach dem Dreischichtenverfahren arbeitende Aluminiumraffinationsöfen