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            02S403 等径四通
        
                    

                
    
                
        
    02S403 等径四通
        

                
    不锈钢四通』管件有等径和异径之分，等径四通的○接管端部均为相同的尺寸；异径的四通的主管接管尺寸相同，而支管的接管尺寸小于主管的接管尺寸。 

                
    
                
    
                
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