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
B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
B—PERFORMING OPERATIONS; TRANSPORTING
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
B21D19/00—Flanging or other edge treatment, e.g. of tubes
B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
B21D19/043—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of plates
Machine pour la fabrication de tubes du type présentant une série de déformations à profil hélicoidal pour échangeurs de température et applications analogues