| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a wear resistant metallic pipe to be excellent in wear resistance and apply weld joining on a pipe end without any trouble. SOLUTION: A wear resistant covering 5 is formed on the inner surface of the pipe body central part 2a, except a region, where a thermal influence during welding to a pipe end is seriously exercised, of a pipe body 2 of which a metallic pipe 1 consists, and wear resistance is improved. A thick section part 2b, the thickness of which is increased instead of formation of the covering 5, is formed at pipe ends on both sides, and a sufficient thickness is ensured even when thickness is worn due to wear, and by utilizing the thickness part 2b, welding joining is practicable without any trouble.</p> |
