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                铸钢阀门
                
	   
                铸钢是在凝固过這時候注意到了程中不经历共晶转变的用于★生产铸件的铁基合金的总称。铸造合金的ζ　一种。铸钢分为铸◇造碳钢、铸造低︽合金钢和铸造特种钢3类。
                
	
                
	
                
	
                
          
              
                
              
              
                
              
                  
          
	
                  

                  

                  
   
                  
   
                  
      
   
                  
   
                  
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