Method for manufacturing welded pipes or tubes with helical seam
    81.
    发明授权
    Method for manufacturing welded pipes or tubes with helical seam 失效
    用焊缝制造焊接管或管道的方法

    公开(公告)号:US3697718A

    公开(公告)日:1972-10-10

    申请号:US3697718D

    申请日:1971-02-12

    申请人: MANNESMANN AG

    CPC分类号: B21C37/122 B23K11/084

    摘要: Pipes are made from helically wrapped strips, having one edge uniformly bevelled, the other one roof shaped with h-f heating of the two edges, where one roof side faces the uniform bevel surface. This joint is pressure welded, and the resulting groove is filled by subsequent fusion welding without requiring removal of any burr from the groove.

    摘要翻译: 管道由螺旋缠绕的条带制成,其一个边缘均匀地被斜切,另一个屋顶由两个边缘的h-f加热形成,其中一个屋顶侧面向均匀的斜面。 该接头被压焊,并且通过后续的熔焊来填充所得到的槽,而不需要从槽中去除任何毛刺。