标准号:BS 906-2-1972
中文标准名称:工程平行板规范.第2部分:英制单位
英文标准名称:Specification for engineers' parallels - Imperial units
标准类型:J42
发布日期:1972/6/16 12:00:00
实施日期:1972/6/16 12:00:00
中国标准分类号:J42
国际标准分类号:17.040.30
适用范围:Seven sizes of Grade A parallels with cross section $9D in x $9H in to 1$9H in x 3 in and nine of Grade B parallels with cross sections $9D in x $9H in to 2 in x 4 in. Material, standard sizes, finish, accuracy, protection and marking.