| 摘要 |
The present invention relates to a method for welding a pipe and a flange which welds a pipe (110) and a flange (100) along a welding line which is a portion where the pipe and the flange are joined, after joining the pipe and the flange. The present invention includes a step (S11) of attaching a detachable sensor unit (200) at a spot corresponding to a vertical line (P1) passing a central point of the pipe (110); a step (S12) of attaching a detachable sensor sensing unit (250) at a spot on one side of the flange (100) corresponding to the sensor unit (200) among the vertical lines (P) passing a central point of the flange (100); a step (S13) of having the pipe (110) come close to the flange (100) after recognizing a warning by a warning device (300) while matching the sensor unit (200) and the sensor sensing unit (250); a step (S14) of removing the sensor unit (200) and the sensor sensing unit (250) from the pipe (110) and the flange (100), respectively, before the pipe (110) and the flange (100) are joined; a step (S15) of joining the pipe (110) and the flange (100); and a step (S16) of welding the pipe and the flange along the welding line. |
