| 摘要 |
PCT No. PCT/FR94/00732 Sec. 371 Date Dec. 13, 1995 Sec. 102(e) Date Dec. 13, 1995 PCT Filed Jun. 17, 1994 PCT Pub. No. WO95/00738 PCT Pub. Date Jan. 5, 1995An expandable high-pressure flexible tube device for sealing piping in gas or oil fields. The device comprises two end pieces interconnected by a tubular element having an elastomeric material and sheets of coils round about its longitudinal axis at a small angle of about 10 DEG to 15 DEG relative thereto. The sheets comprise strong helical textile cords mutually separated by a predetermined spacing. A sheet having longitudinal textile cords extends over the whole length of the device, the helical cords and longitudinal cords being imbedded in the elastomeric material.
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