Copper and copper alloys. Hollow rod for free machining purposes
铜和铜合金 自由加工用空心杆

2016-07-31

Copper and copper alloys. Rod for free machining purposes
铜和铜合金 自由加工用杆

2016-07-31

COPPER AND COPPER ALLOYS. ROD FOR FREE MACHINING PURPOSES.
铜和铜合金 用于自由加工的杆

1999-02-23

Specification for hexagonal bars for nuts, couplings and hollow machined parts of aluminium-copper-magnesium-silicon-manganese alloy (solution treated and precipitation treated) (free from peripheral and asymmetric coarse grain) (not less than 14 mm nor more than 36 mm across flats) (Cu 4.4, Mg 0.5, Si 0.7, Mn 0.8)
铝-铜-镁-硅-锰合金（固溶处理和沉淀处理）螺母、联轴器和空心机加工零件用六角棒规范（无周边和不对称粗晶）（平面宽度不小于14 mm 也不大于36 mm）（Cu 4.4 Mg 0.5

1971-08-31