BS EN ISO 4230:2016是对ISO 2568和ISO 4231的补充，并规定了尺寸 用于生产锥形管螺纹的手动和机械操作的圆形螺纹模， R系列，符合ISO 7-1。除模具1/16外，这些模具的一般尺寸（直径、厚度和固定 尺寸）符合ISO 2568的要求，以允许使用 该文件中定义的模具库存的帮助。交叉引用:ISO 2568ISO 7-1ISO 4231ISO 13399购买本文件时提供的所有现行修订版均包含在购买本文件中。

BS EN ISO 4230:2016 is a supplement to ISO 2568 and ISO 4231 and specifies the dimensions of hand- and machine-operated circular screwing dies intended for production of taper pipe threads, R series, in accordance with ISO 7-1.With the exception of the die 1/16, the general dimensions of these dies (diameter, thickness and fixing dimensions) are in accordance with ISO 2568 so as to permit the driving of hand-operated dies with the aid of the die stocks defined in that document.Cross References:ISO 2568ISO 7-1ISO 4231ISO 13399All current amendments available at time of purchase are included with the purchase of this document.