The pump casing is corroded.

泵壳腐蚀了。

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PW, PWF mainly by the pump cover, pump casing, impeller, shaft seal, shaft, and bracket the composition of such components.

PWF主要由泵盖、泵壳、叶轮、轴封、轴、和托架等零部件组成。

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The pump casing shall be suitably ribbed have tangential discharge and be reinforced to support the weight of the motor assembly.

泵壳应该有适当的肋骨，按切线方向排放，能够再加固以支撑电机总成的重量。

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