Impeller

| Material | Mark Rules | Specifications |
| PPE | PPE-2211 聽 GF20/GF30 | High strength锛孒ydrolysis resistance, Welding resistance |

| Material | Mark Rules | Specifications |
| PPE | PPE-2211 聽 GF20/GF30 | High strength锛孒ydrolysis resistance, Welding resistance |
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