标准摘要
[中文适用范围]： 本文件规定了环球法，一种使用环球仪测定铝生产中使用的沥青的软化点（软化温度）的方法。 该方法适用于软化点等于或大于30℃的沥青。 [外文原描述]： This document specifies the ring-and-ball method, a method of using the ring-and-ball apparatus for the determination of the softening point (softening temperature) of pitch used in the production of aluminium. The method is applicable to pitches having softening points equal to or greater than 30 °C.
英文名称Carbonaceous materials for the production of aluminium — Pitch for electrodes — Part 1: Determination of softening point by the ring-and-ball method