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B16.47 – Series B/API 605 Flangess – Class 400

Series B/API 605 Flanges

Class 400

  Nom. size Outside diam. of flange Thick. of flange Length through hub Diam. of hub Hub diam. top Raised face diam. Diam. of bolt circle No. of holes Diam. of bolt hole Diam. of bolt Fillet radius min.
                         
    O C Y X A R         r1
in. 26″ 33.5 3.5 5.88 27.12 26 28 30.75 28 1.5 1 3/8 0.44
mm.   850.9 88.9 149.4 688.8 660.4 711.2 781.1   38.1 34.9 11.2
in. 28″ 36 3.75 6.25 29.12 28 30 33 24 1.62 1 1/2 0.5
mm.   914.4 95.3 158.8 739.6 711.2 762 838.2   41.1 38.1 12.7
in. 30″ 38.25 4 6.69 31.25 30 32.25 35.25 28 1.62 1 1/2 0.5
mm.   971.6 101.6 169.9 793.8 762 819.2 895.4   41.1 38.1 12.7
in. 32″ 40.75 4.25 7.06 33.25 32 34.38 37.5 28 1.75 1 5/8 0.5
mm.   1035.1 108 179.3 844.6 812.8 873.3 952.5   44.5 41.3 12.7
in. 34″ 42.75 4.38 7.38 35.38 34 36.5 39.5 32 1.75 1 5/8 0.56
mm.   1085.9 111.3 187.5 898.7 863.6 927.1 1003.3   44.5 41.3 14.2
in. 36″ 45.5 4.69 7.88 37.5 36 38.62 42 28 1.88 1 3/4 0.56
mm.   1155.7 119.1 200.2 952.5 914.4 980.9 1066.8   47.8 44.5 14.2
in. 40″                      
mm.                        
in. 42″                      
mm.                        
in. 44″                      
mm.                        
in. 46″                      
mm.                        
in. 48″                      
mm.                        
in. 50″                      
mm.                        
in. 52″                      
mm.                        
in. 54″                      
mm.                        
in. 56″                      
mm.                        
in. 58″                      
mm.                        
in. 60″                      
mm.                        
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