| 摘要 |
1317340 Making tubes KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 10 Nov 1971 [27 Nov 1970] 52177/71 Addition to 1302433 Heading B3A [Also in Division F2] A method of forming a metal tube from tape having a thickness of less than 0À30 mm. as claimed in parent Specification is further characterized by forming the tape around an inner tube. On formation of the metal tube, the inner tube may either remain in the metal tube or be removed therefrom. In the former case the inner tube may be coated with a heat setting adhesive before the tape is formed around the inner tube. The inner tube may be made of polyamide or polytetrafluoroethylene. |
