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    ELEMENT DE CONDUITES COAXIALES ET PROCEDE DE FABRICATION
    2.
    发明授权
    ELEMENT DE CONDUITES COAXIALES ET PROCEDE DE FABRICATION 有权
    ELEMENT MITKOAXIALRÖHRENUND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP1987280B1

    公开(公告)日：2009-07-22

    申请号：EP07731578.6

    申请日：2007-02-06

    申请人： Saipem SA

    发明人： BAYLOT, Michel ,  GOALABRE, Jean-Yves ,  PIONETTI, François-Régis

    IPC分类号： F16L13/02 ,  F16L59/147 ,  F16L9/18

    CPC分类号： F16L9/18 ,  F16L13/02 ,  F16L59/14

    摘要： The invention relates to a method for producing an element (1) comprising coaxial pipes, including an inner pipe (1a), an outer pipe (1b) and a forged connector (2a, 2b) at each of the ends thereof, each connector consisting of at least a first inner arm (3 2 ) which is recessed (L 1 ) in relation to a first outer arm (3 1 ). According to the invention, all of the circular welds between the inner pipe and the outer pipe and the connectors are made from the exterior of the pipes. The invention also relates to the coaxial pipe element (1) thus produced, which is characterised in that the inner pipe (1b) is subjected to a tensile stress.

    摘要翻译： 该元件具有内部管道（1b）和外部管道（1a），其中填充有绝缘材料的环形空间（1d）。 锻造连接部分分别具有外部和内部分支。 分支直接焊接在具有圆形焊丝的内管和外管的端部处，其中电线的孔布置在管的外侧。 内分支在元件的轴向长度方向上相对于外分支具有大的长度。 还包括用于生产包括同轴管的元件的独立权利要求。

    ELEMENT DE CONDUITES COAXIALES ET PROCEDE DE FABRICATION
    3.
    发明公开
    ELEMENT DE CONDUITES COAXIALES ET PROCEDE DE FABRICATION 有权
    具有产生同轴管AND PROCESS ELEMENT

    公开(公告)号：EP1987280A2

    公开(公告)日：2008-11-05

    申请号：EP07731578.6

    申请日：2007-02-06

    申请人： Saipem SA

    发明人： BAYLOT, Michel ,  GOALABRE, Jean-Yves ,  PIONETTI, François-Régis

    IPC分类号： F16L13/02 ,  F16L59/147 ,  F16L9/18

    CPC分类号： F16L9/18 ,  F16L13/02 ,  F16L59/14

    摘要： The invention relates to a method for producing an element (1) comprising coaxial pipes, including an inner pipe (1a), an outer pipe (1b) and a forged connector (2a, 2b) at each of the ends thereof, each connector consisting of at least a first inner arm (32) which is recessed (L1) in relation to a first outer arm (31). According to the invention, all of the circular welds between the inner pipe and the outer pipe and the connectors are made from the exterior of the pipes. The invention also relates to the coaxial pipe element (1) thus produced, which is characterised in that the inner pipe (1b) is subjected to a tensile stress.