JIANGSU YANCHENG.CIS80-50-200AG.03 机械密封轴径: 25毫米 JIANGSU YANCHENG.CIS80-50-200AG.10 BEARING HOUSING JIANGSU YANCHENG.CIS80-50-200AG.11 SHAFT JIANGSU YANCHENG.CIS80-50-200AG.2 IMPELLER JIANGSU YANCHENG.CIS80-50-200AG.3 IMPELLER NUT