| 摘要 |
Production of a multilayer pipe (5) from sheet steel by a bending roller involving laying individual layers (1,2) on top of each other to form the multilayer material which is then shaped to form the multilayer pipe. During the final phase of pipe shaping by the bending roller and/or a bending machine a material layer which acts as an internal pipe (1) is pressed with a force fit into layer (2) which acts as the external pipe. A INDEPENDENT CLAIM is included for a mulilayer pipe obtained by the above process. |
