本规范规定了保护金属电弧焊用堆焊焊条的分类要求。 分类基于熔敷焊缝金属的化学成分，碳化钨焊条除外 其中分类基于碳化钨颗粒的网格范围、数量和成分。导游 作为有关分类产品特性和应用的信息来源，附在本规范之后 电极。

This specification prescribes the requirements for classification of surfacing electrodes for shielded metal arc welding. Classification is based upon the chemical composition of the deposited weld metal except for tungsten carbide electrodes where classification is based on the mesh range, quantity, and composition of the tungsten carbide granules. A guide is appended to the specification as a source of information as to the characteristics and applications of the classified electrodes.