Volute, Pump, Block, Block motor, impeller nut is cast iron, good corrosion resistance, easy processing.
蜗壳、泵座、电机座、叶轮螺母是生铁铸造、耐腐化性较好，加工工艺方便。
As the pump flow passage components selected stainless steel, engineering plastic to manufacture, so as to achieve the purpose of corrosion resistance.
因为泵的过流部件选用了不锈钢、工程塑料来制造，从而达到耐腐蚀之目的。
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