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1·Taper pin?

锥形销?。

2·The new structure of a taper pin connection with external thread is introduced.

介绍了一种外端带有螺纹的圆锥销联接的新型结构。

3·Connection between post, upper rail shall be mounted by taper pin or welding, the specified method refer to the details followed.

立柱与扶手管、杆间采用销钉固定或焊接固定的方式，具体的连接方式见后面的的详细要求。

4·The quality of the beads welded with inverted taper and cylindrical screw pin is poor, only partially jointed or disjointed.

采用倒圆锥形和螺柱形搅拌头焊接的接头焊合不良，质量较差。