E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
E04D13/08—Down pipes; Special clamping means therefor
B—PERFORMING OPERATIONS; TRANSPORTING
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
B21C37/12—Making tubes or metal hoses with helically arranged seams
B21C37/121—Making tubes or metal hoses with helically arranged seams with seams being neither welded nor soldered
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Architecture
(AREA)
Civil Engineering
(AREA)
Structural Engineering
(AREA)
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Procede de fabrication d'une gaine a section notamment circulaire ou ovale, systeme de mise en oeuvre de ce procede et procede de raccordement d'une telle gaine a un dispositif quelconque
Procede de fabrication d'un ou de plusieurs profiles en matiere flexible, en particulier en papier, en carton, en materiaux composites ou analogues et dispositif pour la mise en óoeuvre de ce procede.