HAND AND MACHINE OPERATED CIRCULAR SCREWING DIES FOR PARALLEL PIPE THREADS. G SERIES.
用于平行管螺纹的手动和机械操作的圆形螺纹模具 G系列
1991-01-10
BS EN ISO 4231-2016
Hand- and machine-operated circular screwing dies for parallel pipe threads. G series
用于平行管螺纹的手动和机械操作的圆形螺纹模具 G系列
2016-12-31
ISO 4231-2016
Hand- and machine-operated circular screwing dies for parallel pipe threads — G series
平行管螺纹手动和机械圆形螺纹螺纹 - G系列
2016-10-14
DIN EN 24231
Hand and machine-operated circular screwing dies for parallel pipe threads, G series (ISO 4231:1987); german version EN 24231:1989
G系列平行管螺纹用手动和机械操作圆螺纹旋具（ISO 4231-1987）；德文版EN 24231:1989
1990-06-01
DIN EN ISO 4231
Hand- and machine-operated circular screwing dies for parallel pipe threads - G series (ISO 4231:2016); German Version EN ISO 4231:2016
平行管螺纹用手动和机械操作的圆形螺纹模.G系列（ISO 4231-2016）；德文版EN ISO 4231:2016