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Flanges Dimensions
Dimensions for Class 150 Flanges...

Flanges Dimensions

Nom. Pipe
Size (inches)
O Q R X No. & Dia.
of Bolt Holes
Bolt Circle
Dia
YY H J Y B R YY BB Z
1/2 3.50 .44 1.38 1.19 4-0.62 2.38 1.88 .84 .62 .62 .88 .12 .62 .90 .38
3/4 3.88 .50 1.69 1.50 4-0.62 2.75 2.06 1.05 .82 .62 1.09 .12 .62 1.11 .44
1 4.25 .56 2.00 1.94 4-0.62 3.12 2.19 1.32 1.05 .69 1.36 .12 .69 1.38 .50
11/4 4.62 .62 2.50 2.31 4-0.62 3.50 2.25 1.66 1.38 .81 1.70 .19 .81 1.72 .56
11/2 5.00 .68 2.88 2.56 4-0.62 3.88 2.44 1.90 1.61 .88 1.95 .25 .88 1.97 .62
2 6.00 .75 3.62 3.06 4-0.75 4.75 2.50 2.38 2.07 1.00 2.44 .31 1.00 2.46 .69
21/2 7.00 .88 4.12 3.56 4-0.75 5.50 2.75 2.88 2.47 1.12 2.94 .31 1.12 2.97 .75
3 7.50 .94 5.00 4.25 4-0.75 6.00 2.75 3.50 3.07 1.19 3.57 .38 1.19 3.60 .81
31/2 8.50 .94 5.50 4.81 8-0.75 7.00 2.81 4.00 3.55 1.25 40.70 .38 1.25 4.10  
4 9.00 .94 6.19 5.31 8-0.75 7.50 3.00 4.50 4.03 1.31 4.57 .44 1.31 4.60  
5 10.00 .94 7.31 6.44 8-0.88 8.50 3.50 5.56 5.05 1.44 5.66 .44 1.44 5.69  
6 11.00 1.00 8.50 7.56 8-0.88 9.50 3.50 6.63 6.07 1.56 6.72 .50 1.56 6.75  
8 13.50 1.12 10.62 9.69 8-0.88 11.75 4.00 8.63 7.98 1.75 8.72 .50 1.75 8.75  
10 16.00 1.19 12.75 12.00 12-1.00 14.25 4.00 10.75 10.02 1.94 10.88 .50 1.94 10.92  
12 19.00 1.25 15.00 14.38 12-1.00 17.00 4.50 12.75 12.00 2.19 12.88 .50 2.19 12.92  
14 21.00 1.38 16.25 15.75 12-1.12 18.75 5.00 14.00 To Be
Specified
by
Purchaser
2.25 14.14 .50 3.12 14.18  
16 23.50 1.44 18.50 18.00 16-1.12 21.25 5.00 16.00 2.50 16.16 .50 3.44 16.19  
18 25.00 1.56 21.00 19.88 16-1.25 22.75 5.50 18.00 2.69 18.18 .50 3.81 18.20  
20 27.50 1.69 23.00 22.00 20-1.25 25.00 5.69 20.00 2.88 20.2 .50 4.06 20.25  
24 32.00 1.88 27.25 26.12 20-1.38 29.50 6.00 24.00 3.25 24.25 .50 4.38 24.25  


Dimensions for Class 300 Flanges...

Flanges Dimensions

Nom. Pipe
Size (inches)
O Q* R X No.
&
Dia of
Bolt
Holes
Bolt
Circle
Dia.
YY* H J Y* B R YV BB Z C T
1/2 3.75 0.56 1.38 1.50 4-0.62 2.62 2.06 0.84 0.62 0.88 0.88 0.12 0.88 0.90 0.38 0.93 0.62
3/4 4.62 0.62 1.69 1.88 4-0.75 3.25 2.25 1.05 0.82 1.00 1.09 0.12 1.00 1.11 0.44 1.14 0.62
1 4.88 0.69 2.00 2.12 4-0.75 3.50 2.44 1.32 1.05 1.06 1.36 0.12 1.06 1.38 0.50 1.41 0.69
11/4 5.25 0.75 2.50 2.50 4-0.75 3.88 2.56 1.66 1.38 1.06 1.70 0.19 1.06 1.72 0.56 1.75 0.81
11/2 6.12 0.81 2.88 2.75 4-0.88 4.50 2.69 1.90 1.61 1.19 1.95 0.25 1.19 1.97 0.62 1.99 0.88
2 6.50 0.88 3.62 3.31 8-0.75 5.00 2.75 2.38 2.07 1.31 2.44 0.31 1.31 2.46 0.69 2.50 1.12
21/2 7.50 1.00 4.12 3.94 8-0.88 5.88 3.00 2.88 2.47 1.50 2.94 0.31 1.50 2.97 0.75 3.00 1.25
3 8.25 1.12 5.00 4.62 8-0.88 6.62 3.12 3.50 3.07 1.69 3.57 0.38 1.69 3.60 0.81 3.63 1.25
31/2 9.00 1.19 5.50 5.25 8-0.88 7.25 3.19 4.00 3.55 1.75 4.07 0.38 1.75 4.10   4.13 1.44
4 10.00 1.25 6.19 5.75 8-0.88 7.88 3.38 4.50 4.03 1.88 4.57 0.44 1.88 4.60   4.63 1.44
5 11.00 1.38 7.31 7.00 8-0.88 9.25 3.88 5.56 5.05 2.00 5.66 0.44 2.00 5.69   5.69 1.69
6 12.50 1.44 8.50 8.12 12-0.88 10.62 3.88 6.63 6.07 2.06 6.72 0.50 2.06 6.75   6.75 1.81
8 15.00 1.62 10.62 10.25 12-1.00 13.00 4.38 8.63 7.98 2.44 8.72 0.50 2.44 8.75   8.75 2.00
10 17.50 1.88 12.75 12.62 16-1.12 15.25 4.62 10.75 10.02 2.62 10.88 0.50 3.75 10.92   10.88 2.19
12 20.50 2.00 15.00 14.75 16-1.25 17.75 5.12 12.75 12.00 2.88 12.88 0.50 4.00 12.92   12.94 2.38
14 23.00 2.12 16.25 16.75 20-1.25 20.25 5.62 14.00 To Be
Specified
by
Purchaser
3.00 14.14 0.50 4.38 14.18   14.19 2.50
16 25.50 2.25 18.50 19.00 20-1.38 22.50 5.75 16.00 3.25 16.16 0.50 4.75 16.19   16.19 2.69
18 28.00 2.38 21.00 21.00 24-1.38 24.75 6.25 18.00 3.50 18.18 0.50 5.12 18.20   18.19 2.75
20 30.50 2.50 23.00 23.12 24-1.38 27.00 6.38 20.00 3.75 20.20 0.50 5.50 20.25   20.19 2.88
24 36.00 2.75 27.25 27.62 24-1.62 32.00 6.62 24.00 4.19 24.25 0.50 6.00 24.25   24.19 3.25

----------------------------------- OUR PRODUCTS -----------------------------------
Structural Pipes | Scaffolding Systems & Accessories | Flanges | Nuts & Bolts | Galvanized Coils & Sheets

----------------------------------- TURNKEY PROJECTS -----------------------------------
Tube Mills & Allied Machines