| 摘要 |
Prior to introduction and fastening of the sheathing sleeve (18) in the tube (12), a metal coating (20) is made on the inner surface of the tube (12), in a region (14) overlapping the sleeve fastening region (18) in the part of the tube which projects with respect to the tube plate (10). The sleeve (18) is then crimped in contact with the metal coating (20) which protects the wall of the tube (12) against stress corrosion in the region of fastening of the sleeve (18). … <IMAGE> … |
