石油、化工及相关工业用的钢制旋启式止回阀、阀盖用垫片
| 类 型 |
使用压力/MPa ≤ |
温度/℃ ≤ |
| 柔性石墨增强复合垫 | 5.0 | 425 |
| 金属包覆垫 | 5.0 | 425 |
| 金属缠绕垫 | 16.0 | 550 |
| 金属波齿垫 | 25.0 | 450 |
| 金属环形垫 | 42.0 | 550 |
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