| 摘要 |
A pig with an excellent foreign material removing efficiency is provided to maximize removal efficiency of foreign material because the high pressure water supplied from rearward is sprayed to the inner wall of the conduit after passing through the pig. A pig with an excellent foreign material removing efficiency comprises a through-hole which penetrates in the longitudinal direction of the pig, a socket which is fastened from the front of through-hole to inside, an inlet hole which is formed behind the socket in the longitudinal direction, and a plurality of jetting holes(120) which is radially formed facing the inner wall of the conduit in one side of the inlet hole.
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