The flexible tube is not connected, and method for increasing the stiffness of one or more sections of a length of a flexible tube stiffened unalloyed

摘要

The flexible tube is not connected, and method for increasing the stiffness of one or more sections of a length of a stiffened flexible tube not connected. The invention relates to a flexible tube having a length not connected and which comprises a tubular internal sealing sheath from inside to outside, at least one layer of metal shielding sheath and an external sealing of a material sealer.The flexible tube not connected comprises at least one section length which comprises a rigid cobretura hardening surrounding partially or wholly foreign seladroa sheath section length stiffening.The coverage of hardening comprises a layer of a material having a modulus of bending stiffness that is greater than the modulus of bending of the material sealant, in the flexion module is determined in accordance with ISO 178.