| 摘要 |
<p>The present invention relates to a method of producing metallic composite pipes, and comprises: a first metallic layer and a second metallic layer which relates to a metallurgical connection method connecting these layers along a width of the band. An open-seam pipe forms by contacting the band which travels in a longitudinal direction along a slit extending in the longitudinal direction against a vertical edge of each open-seam formed as an open-seam pipe, and the slit welded to form a pipe which is closed in all direction. Therefore, the two longitudinal edges of the band and the first metal from the second metal on the strip are removed to process the entire length of the band. The above band is formed with the open-seam pipe located externally on the first metallic layer, and welded to form a closed pipe in all directions along the edge of the second metallic layer. Thereafter, in order to form a closed pipe in all directions which has the first metallic layer, the first metallic layer is deposited on the second metallic layer within the welded seam area.</p> |
