名称材料标 准泵体*铸铁HT250GB9439-88A球铁QT400-18GB1348-88泵盖*铸铁HT250GB9439-88A球铁QT400-18GB1348-88*铸铁HT200GB9439-88叶轮锡青铜ZCuSn10Zn2GB1176-87A硅黄铜ZCuZn16Si4GB1176-87*铸铁HT250GB9439-88A球铁QT400-18GB1348-88*铸铁HT200GB9439