Class 75WN Flanges
Class 75 Weld Neck Flange Class 75 Blind Flange
Weld Neck
Blind

 

Industry Standard Class 75 Weld Neck & Blind
 
Nom Size   Thickness     Drilling Weight
OD Weld Neck Blind OD of RF Dia at Base Bore LTH Dia Bevel Bolt Circle Bolt Lengtha Hole Diab #  of Holes Weld Neck Blind
O T  T R X B L  A            
26 31.50 1.15 1.25 28.63 27.13 Texas Flange Flanges 3.00 Texas Flange Flanges 29.63 5.00 1.00 32 98 265
28 33.50 1.25 1.25 30.63 29.13 3.00 31.63 5.00 1.00 36 105 300
30 35.50 1.25 1.38 32.63 31.13 3.00 33.63 5.25 1.00 36 110 370
32 38.25 1.25 1.50 35.00 33.38 3.25 36.16 5.50 1.13 36 140 470
34 40.25 1.25 1.50 37.00 35.38 3.25 38.13 5.50 1.13 40 150 520
36 42.25 1.25 1.63 39.00 37.38 3.25 40.13 5.75 1.13 40 160 620
42 49.00 1.25 1.88 45.50 43.75 3.50 46.75 6.25 1.25 48 210 970
48 55.00 1.25 2.13 51.50 49.75 3.75 52.75 6.50 1.25 52 240 1375
54 61.25 1.38 2.38 57.75 56.00 4.00 59.00 6.75 1.25 64 310 1925
60 67.25 1.63 2.63 63.75 62.00 4.38 65.00 7.25 1.25 72 400 2575
66 74.00 1.88 2.88 70.13 68.00 4.88 71.50 8.00 1.38 72 560 3400
72 80.00 2.25 3.13 76.13 74.00 5.25 77.50 8.75 1.38 80 700 4350
Dimensions are in inches.  Weights are in pounds.
Note:  Larger sizes as well as intermediate sizes can be furnished.  When ordering Industry Standard Class 75 blinds specifiy if they are to be used with Weld Neck or Slip On flanges as the blinds differ between the two.                                                                                                                                                                                                                           
(a) Bolt lengths are calculated based on bolting one slip-on to one blind.  Any other bolting combination 
      will cause variance in bolt length.     
(b)  Bolt hole diameter 1/8in. larger than bolt diameter.

Class 75WN Flange PDF (for printing).