| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent a black gas pipe from its corrosion to considerably prolong its life, by eliminating a surface part of the pipe which contacts water. <P>SOLUTION: After a wire brush or a thing equivalent thereto is caused to pass through the black gas pipe to subject the pipe to a rust prevention treatment to remove rust, scale, and deposit, the inner surface of the pipe is coated with an epoxy resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
