NFA 51 117:1983被替代
Semi-finished Copper And Copper Alloy Products - Nickel Silver Bars, Wire And Sections - Specification
出版：Association Francaise de Normalisation
专家解读视频
83 [01/12/1983]
ISO 1637:1987 - Similar
ISO 1638:1987 - Similar
ISO 1639:1974 - Similar
ISO 430:1983 - Similar
ISO 1638 : 1987 - Similar to
ISO 1637 : 1987 - Similar to
ISO 1639 : 1974 - Similar to
ISO 430 : 1983 - Similar to
ISO 1639 : 1974 - Similar to
ISO 1638 : 1987 - Similar to
ISO 1637 : 1987 - Similar to
ISO 430 : 1983 - Similar to
