| 摘要 |
<p>PURPOSE:To constitute a protecting material for a buried pipe by a pair of cloth members formed of plural laminated synthetic resin yarn, and a marking sheet which is brought in contact with the cloth members at a constant interval. CONSTITUTION:Woven cloths 13 which are formed by synthetic resin yarn are laminated in plural layers, and also a pair of woven cloths 13 is arranged in parallel condition at a prescribed interval, a marking sheet 14 for making existence of a buried pipe 11 know is hooked between both woven cloths 13, and also the vicinity of both end part of the marking sheet 14 is integratedly seamed together with the woven cloths 13 by means of a sewing machine. An aluminum foil and the like as an electric conductive member may be provided aside the marking sheet 14. It is thus possible to receive a tool by a protecting material at the time of drilling work, and there is no possibility of breakage of the buried pipe. And also it is possible to save the material of the woven cloth.</p> |
