<正>On March 20,2008,the journalist of CHINAFOUNDRY journal visited the Propeller Plant of Wuhan Heavy Industry Casting&Forging Co.,Ltd.,which is located in the
<正>The height of the bell body is 3.421 m,the maximal diameter is 2.85 m,the maximal wall thickness is 213 mm,the minimal wall thickness is 54 mm.And the total