阀门受压铸钢件射线照相检测 单个缺陷的点数
| 缺陷尺寸 mm | ≤2.0 | >2.0~4.0 | >4.0~6.0 | >6.0~8.0 | >8.0~10.0 | 
| 缺陷点数 | 1 | 2 | 3 | 5 | 8 | 
| 缺陷尺寸 mm | >10.0~15.0 | >15.0~20.0 | >20.0~25.0 | >25.0~30.0 | >30.0~60.0 | 
| 缺陷点数 | 12 | 16 | 20 | 40 | 90 | 
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