DIN EN ISO 13920 E:2023 焊接 焊接结构的一般公差 长度和角度尺寸 形状和位置 (ISO/FDIS 13920:2023) 草案
Draft Document - Welding - General tolerances for welded constructions - Dimensions for lengths and angles - Shape and position (ISO/FDIS 13920:2023); German and English version prEN ISO 13920:2023