mhz optionally in order to enhance the effectiveness of shielding it is possible to consider performing a deposition of a metal coating on the fabric this coating may be performed by an electrochemical deposition according to known techniques a thickness comprised in an interval from 0 2 u03bcm to 1 3 u03bcm is deposited depending on the desired level of shielding attenuation fig8 shows a measurement of electromagnetic shielding performed with a variant of the fabric represented in fig1 the latter having received a nickel coating this fabric comprises i warp textile threads made of pet and threads made of tin plated copper with 8 strands of 0 10 mm ii weft thermoplastic monofilaments made pet and metal warp threads inserted according to an eight pick pitch and iii a metallized coating electrochemically deposited over a thickness in the range of 0 7 u03bcm knowing that the coating may have a thickness comprised between 0 2 u03bcm and 1 3 u03bcm the measurements performed within the aforementioned standard show an attenuation in the range of 56 db at 30 mhz and 55 5 db for a frequency of 40 mhz these measurements prove that the sheaths performed with the fabric according to the invention in several variants present an electromagnetic shielding which is significantly higher than the sheaths of the prior art in order to improve the performance of electromagnetic shielding of the tubular sheath the sheath which is formed by a fabric strip closed on itself comprises a conductive strip of conductive warp threads inserted by weaving in the plain weave on the mechanical protection face so that the conductive strip is covered by the opposite face on the electromagnetic protection face side of the sheath and constitutes a closure of the electrical.