It USES a single stator, rare-earth neodymium iron boron permanent magnet in a cast aluminum casing with stainless steel fittings.
它把单个定子、钕铁硼永磁稀土材料装在铝制铸件内，用不锈钢零件固定。
The pump casing, impeller, motor housing and stationary base elbow shall be manufactured of close-grained cast iron, ASTM A48, Class 30.
泵壳，叶轮，电机壳和固定底座弯头都应该采用符合美国材料试验协会ASTM A48级别30致密铸铁制造。
Each rotor impeller is composed of a cast iron frame, a graphite casing, an upper main shaft, a lower main shaft, the graphite impeller and the belt wheel.
转子叶轮由铸铁支架、石墨套管，上部主轴、下部主轴、石墨叶轮和皮带轮构成。
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