国外阀门材料常用技术标准 热浸或金属沉积镀锌螺纹检验的样本尺寸和验收数量
| 批量尺寸 | 样本尺寸A | 验收数量A |
| 2-90 | 13 | 1 |
| 91-150 | 20 | 2 |
| 151-280 | 32 | 3 |
| 281-500 | 50 | 5 |
| 501-1200 | 80 | 7 |
| 1201-3200 | 125 | 10 |
| 3201-10000 | 200 | 14 |
| ≥10001 | 315 | 21 |
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