标准摘要
[中文适用范围]： 本国际标准规定了在测试用于电解生产铝的电极制造中使用的粘合剂沥青之前取样和制备样品的方法。 这些方法适用于液体或固体形式的沥青，后者的软化点高于 30℃（根据 ISO 5940 规定的方法测定），散装或现场装在多个容器中组成一批的沥青。 制造、储存或交付。 其中包括船舶装卸期间大宗或批量液态沥青的取样方法和取样计划。 [外文原描述]： ISO 6257:2002 specifies methods for sampling and preparing samples prior to testing of binder pitch used in the manufacture of electrodes for the electrolytic production of aluminium. These methods are applicable to grades of pitch in liquid or solid form, the latter having softening points higher than 30 °C (determined according to the method specified in ISO 5940), in bulk, or in a number of containers making up one batch at sites of manufacture, storage, or delivery. Sampling methods and sampling plans for large consignments, or lots, of pitch in liquid form during the loading and unloading of ships are included.
英文名称Carbonaceous materials used in the production of aluminium — Pitch for electrodes — Sampling