| 摘要 |
PROBLEM TO BE SOLVED: To provide a connector which is suppressed in thermal deterioration of a tube by reducing further the time for melting of the fusion surface between the tube and a connector and occurrence of shaving scum, or burr.SOLUTION: A connector 10 has a fusion surface 72a to be connected with a thermoplastic-made tube 20 by spin fusion in the inner peripheral surface, the outer peripheral surface and at least one of end surfaces. The fusion surface 72a has a plurality of convex parts 74a formed discretely in the circumferential direction of the connector 10 through circumferential-direction concave parts 73a of the connector 10. |
