标准摘要
[中文适用范围]： 本国际标准是ISO 2568和ISO 4230的补充，规定了手用和机用圆柱丝锥的尺寸，适用于G系列平行管螺纹的生产，符合ISO 228-1的要求。一般尺寸（直径、厚度和固定尺寸）应符合ISO 2568，以便于使用根据该文件定义的夹头驱动手用丝锥。 [外文原描述]： ISO 4231:2016 is a supplement to ISO 2568 and ISO 4230 and specifies the dimensions of hand- and machine-operated circular screwing dies intended for production of parallel pipe threads, G series, in accordance with ISO 228‑1. 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.
英文名称Hand- and machine-operated circular screwing dies for parallel pipe threads — G series