拔管心轴

[中文适用范围]： 指定拉管心轴相对于其直径的一般尺寸。 适用于钎焊拉丝芯轴和套筒拉丝芯轴。 尺寸的确定是尽可能考虑到现有实践。 螺纹以两种测量系统（公制和英寸）给出，以便允许在任何机器上使用这些心轴。 [外文原描述]： Specifies the general dimensions of tube drawing mandrels with respect to their diameter. applies to brazed drawing mandrels and sleeved drawing mandrels. The dimensions have been determined taking existing practice into account as far as possible. Threads are given in both measurement systems (metric and inches) so as to allow the use of these mandrels on any machine.