| 摘要 |
The elbow has hollow conductor-connecting pieces (1) including an inner-cross section with an edge length (a), where an angle section that results ninety degree-direction change is provided between the connecting pieces. The angle section has a chamfer as a boundary wall for the elbow, where a hollow conductor-channel is outwards limited by the chamfer. The chamfer has a length in a bending level, which corresponds to the edge length of the connecting pieces. |
