SIS SS 21 54 11-1980 Wrought copper and copper alloys Drawn round bars Dimensions and tolerances《锻造铜及铜合金 冷拔圆棒 尺寸和公差》.pdf

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CSN 42 6511-1984 Cold drawn round bars made of steel grades 11-16 with tolerances h 9 Dimensions《11-16级钢制的冷拔圆棒，车削的，公差h9尺寸》.pdf

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