| 摘要 |
It is of the type comprising at least one metal profile (P) spiralled in a helix about a longitudinal axis (A-A) of the said flexible pipe and is characterized in that the profile (P) consists of a metal strip (1), each turn of which comprises two separate box sections (2, 3) which are obtained by bending the said strip so that the free edges (8, 9) of the strip are turned down between the two box sections (2, 3) and are in contact with a strip portion (6) provided on a bulge (5) formed between the two box sections, the said contact portion (6) lying approximately along the neutral fibre (7) of the said profile, and in that each box section (2, 3) has a trapezoidal shape.
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