| 摘要 |
<P>PROBLEM TO BE SOLVED: To evaluate a low-temperature crack of a seam weld zone without using a high-strength UOE steel pipe itself. <P>SOLUTION: A test piece 1 for welding evaluation test is formed by butt-joining two flat plates 2a, 2b formed using the same material as the high-strength UOE steel pipe, and includes a butt joint simulation part 2 having grooves 7, 8 formed on both surfaces 2c, 2d along a linear butt connection region, and restriction plates 3, 4 in a flat-plate shape provided on one surface 2c of the butt joint simulation part 2 in such a way that the restriction plates 3, 4 are parallel to a formation direction of the groove 7 on the surface 2c. <P>COPYRIGHT: (C)2013,JPO&INPIT |
