公开(公告)号：EP0749546B1

公开(公告)日：2000-09-27

申请号：EP95911378.8

申请日：1995-03-07

申请人： Atofina ,  COFLEXIP

发明人： STRASSEL, Albert ,  HARDY, Jean

IPC分类号： F16L9/147 ,  F16L11/16

CPC分类号： F16L11/083 ,  F16L11/16

公开(公告)号：EP0749546A1

公开(公告)日：1996-12-27

申请号：EP95911378.0

申请日：1995-03-07

申请人： ELF ATOCHEM S.A. ,  COFLEXIP

发明人： STRASSEL, Albert ,  HARDY, Jean

IPC分类号： F16L9 ,  F16L11

CPC分类号： F16L11/083 ,  F16L11/16

摘要： A flexible metal pipe (2) is coated with a sealing sheath made of one or more shrinkable polymers, preferably of the semi-crystalline type. The invention is characterized in that an intermediate layer (8) is arranged between the shrinkable polymer sheath and the metal pipe, said layer being made of an optionally cured or crosslinked elastomer and/or a thermoplastic elastomer. Said layer is either in the form of a continuous tubular envelope (Fig. 3) or in the form of a strip (Figs. 4 to 6). The sheathed pipes of the invention are useful, in particular, in the manufacture of flexible, optionally reinforced oil and gas pipes.