| 摘要 |
<p>PROBLEM TO BE SOLVED: To carry out mounting operations onto pipe material for underground buried piping simply in a short time. SOLUTION: This protection material is formed out of a protection material main body 2 composed of a thermal plastic component which is in a major arc shape in cross section while being long as specified, and of a cover 3 made out of chemical fiber knitting fabric, which is joined with the protection material main body 2 so as to let the aforesaid main body be covered. The color of the protection material main body 2 and the cover 3 is made identical to that of the piping buried underground to be protected. Material to be used for the protective material main body 2 and the cover 3, is made identical to that of the piping buried underground to be protected.</p> |
