| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a face pipe having good work efficiency in the case of working. SOLUTION: In a face pipe 1 consisting of a straight pipe treated with facing processing such as polishing work, plating work, etc., on the outside surface 1a thereof, a standard line L of a straight line extended in the direction of the pipe length parallel to the axis is attached to the outside surface 1a. According to the face pipe 1, in manufacturing work of the face pipe 1, the standard line L is used as the standard of the manufacturing work to promote work difficiency, and it can be expected that a manufacturing cost of a product obtained by applying decoration treatment to the face pipe 1 becomes low.</p> |
