食品级不锈钢管材国家标准有哪些
常用的国标食品级不锈钢管材执行:GB/T17219-1998,GB/T12771-2008 DIN11850  DIN11852  IOS2037等标准
  
    
      | 
       公称 
       | 
      
         
       | 
      
       平均 
       | 
      
       外径 
       | 
      
         
       | 
      
         
       | 
      
       S系列公 
       | 
      
       称壁厚 
       | 
      
         
       | 
    
    
      | 
       外径 
       | 
      
       min 
       | 
      
       max 
       | 
      
       S5 
       | 
      
       S4 
       | 
      
       S3.2 
       | 
      
       S2.5 
       | 
    
    
      | 
       20 
       | 
      
       20.0 
       | 
      
       20.3 
       | 
      
       2.0 
       | 
      
       2.3 
       | 
      
       2.8 
       | 
      
       3.4 
       | 
    
    
      | 
       25 
       | 
      
       25.0 
       | 
      
       25.3 
       | 
      
       2.3 
       | 
      
       2.8 
       | 
      
       3.5 
       | 
      
       4.2 
       | 
    
    
      | 
       32 
       | 
      
       32.0 
       | 
      
       32.3 
       | 
      
       2.9 
       | 
      
       3.6 
       | 
      
       4.4 
       | 
      
       5.4 
       | 
    
    
      | 
       40 
       | 
      
       40.0 
       | 
      
       40.4 
       | 
      
       3.7 
       | 
      
       4.5 
       | 
      
       5.5 
       | 
      
       6.7 
       | 
    
    
      | 
       50 
       | 
      
       50.0 
       | 
      
       50.5 
       | 
      
       4.6 
       | 
      
       5.6 
       | 
      
       6.9 
       | 
      
       8.3 
       | 
    
    
      | 
       63 
       | 
      
       63.0 
       | 
      
       63.6 
       | 
      
       5.8 
       | 
      
       7.1 
       | 
      
       8.6 
       | 
      
       10.5 
       | 
    
    
      | 
       75 
       | 
      
       75.0 
       | 
      
       75.7 
       | 
      
       6.8 
       | 
      
       8.4 
       | 
      
       10.3 
       | 
      
       12.5  
       | 
    
    
      | 
       90 
       | 
      
       90.0 
       | 
      
       90.9 
       | 
      
       8.2 
       | 
      
       10.1 
       | 
      
       12.3 
       | 
      
       15.0  
       | 
    
    
      | 
       110 
       | 
      
       110.0 
       | 
      
       111.0 
       | 
      
       10.0 
       | 
      
       12.3 
       | 
      
       15.1 
       | 
      
       18.3  
       |