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Fittings / Socket Welding (ANSI B16.11)

90° Elbow

cross

Tee

45° elbow

Full coupling

Half coupling

Cap


Nominal Pipe Size B D C G J A E F A E F End Wall Thickness
Km
Socket Bore dia.B(Note[1[) Bore Diameter of Fittings, D[Note (1)] Socket Wall Thickness, C Body Wall   90 deg Elbows,Tees and Crosses 45 Dog Elbows Laying Lengths Tolerances+/- Class Designation
Class Designation Class Designation Class Designation   Coupleings, Half Couplings,            
      3000 6000 9000 3000 6000 9000   Class Designation            
(mm) (Inch 3000 6000 9000 Agv. min. Agv. min. Agv. min. min min min J 3000 6000 9000 3000 6000 9000 E F A E F 3000 6000 9000
6 1/8 11.2 7.6 4.8 ..... 3.18 3.18 3.96 3.43 .... .... 2.41 3.15 .... 9.5 11.0 11.0 ..... 8.0 8.0 .... 6.5 16.0 1.0 1.5 1.0 4.8 6.4 ....
    10.8 6.1 3.2 .....                                                
8 1/4 14.6 10.0 7.1 ..... 3.78 3.30 4.60 4.01 .... .... 3.02 3.68 .... 9.5 11.0 13.5 ..... 8.0 8.0 .... 6.5 16.0 1.0 1.5 1.0 4.8 6.4 ....
    14.2 8.5 5.6 .....                                                
10 3/8 18.0 13.3 9.9 ..... 4.01 3.50 5.03 4.37 .... .... 3.20 4.01 .... 9.5 13.5 15.5 .... 8.0 11.0 .... 6.5 17.5 1.5 3.0 1.5 4.8 6.4 ....
    17.6 11.8 8.4 .....                                                
15 1/2 22.2 16.6 12.5 7.2 4.67 4.09 5.97 5.18 9.35 8.18 3.73 4.78 7.47 9.5 15.5 19.0 25.5 11.0 12.5 15.5 9.5 22.5 1.5 3.0 1.5 6.4 7.9 11.2
    21.8 15.0 11.0 5.6                                                
20 3/4 27.6 21.7 16.3 11.8 4.90 4.27 6.96 6.04 9.78 8.56 3.91 5.56 7.82 12.5 19.0 22.5 28.5 13.0 14.0 19.0 9.5 24.0 1.5 3.0 1.5 6.4 7.9 12.7
    27.2 20.2 14.8 10.3                                                
25 1 34.3 27.4 21.5 16.0 5.69 4.89 7.92 6.93 11.38 9.96 4.55 6.35 9.09 12.5 22.5 27.0 32.0 14.0 17.5 20.5 12.5 28.5 2.0 4.0 2.0 9.6 11.2 14.7
    33.9 25.9 19.9 14.4                                                
32 1.1/4 43.1 35.8 30.2 23.5 6.07 5.28 7.92 6.93 12.14 10.96 4.85 6.35 9.70 12.5 27.0 32.0 35.0 17.5 20.5 22.5 12.5 30.0 2.0 4.0 2.0 9.6 11.2 14.2
    42.7 34.3 28.7 22.0                                                
40 1.1/2 49.2 41.6 34.7 28.7 6.35 5.54 8.92 7.80 12.70 11.12 5.08 7.14 10.15 12.5 32.0 38.0 38.0 20.5 25.5 25.5 12.5 32.0 2.0 4.0 2.0 11.2 12.7 15.7
    48.8 40.1 33.2 27.2                                                
50 2 61.7 53.3 43.6 38.9 6.93 6.04 10.92 9.50 13.84 12.12 5.54 8.74 11.07 16.0 38.0 41.0 54.0 25.5 28.5 28.5 19.0 41.0 2.0 4.0 2.0 12.7 15.7 19.0
    61.2 51.7 42.1 37.4                                                
65 2.1/2 74.4 64.2 .... .... 8.76 7.67 .... .... .... .... 7.01 .... .... 16.0 41.0 .... .... 28.5 .... .... 19.0 43.0 2.5 5.0 2.5 15.7 19.0 ....
    73.9 61.2 .... ....                                                
80 3 90.3 79.4 .... .... 9.52 8.30 .... .... .... .... 7.62 .... .... 16.0 57.0 .... .... 32.0 .... .... 19.0 44.5 2.5 5.0 2.5 19.0 22.4 ....
        .... ....                                                
100 4 115.7 103.8 .... .... 10.69 9.35 .... .... .... .... 8.56 .... .... 19.0 66.5 .... .... 41.0 .... .... 19.0 48.0 2.5 5.0 2.5 22.4 28.4 ....
    115.2 100.7 .... ....                                                

Upper and Lower values for each size are the respective maximum and minimum dimensions.



Fittings / Socket Welding Unions BS 3799 1974


Nominal Size S A B C d E F G
Depth of Socket
(min.)
S
Distance between bottoms of sockets (min.)
A
Bore diameter of Sockets (min.)
B
Socket wall thickness (min.)
C
Bore diameter of union
d*
Thickness of shoulder(min.)
E
Width
A/F of nut (min.)
F
Height of Nut (min.)
G
in mm mm mm mm mm mm mm mm mm
1/8 (6) 10 17 10.7 3.2 6.8 3.2 32 16
1/4 (8) 10 17 14.1 3.3 9.2 3.2 32 18
3/8 (10) 10 17 17.6 3.5 12.5 3.2 36 19
1/2 (15) 10 18 21.8 4.1 15.5 4.0 41 21
3/4 (20) 13 20 27.4 4.3 21.0 4.8 50 24
1 (25) 13 26 34.1 5.0 26.5 4.8 60 25
1 1/4 (32) 13 28 42.9 5.3 35.0 5.6 70 29
1 1/2 (40) 13 30 49.0 5.6 40.5 5.6 78 30
2 (50) 16 36 61.0 6.1 52.0 6.4 95 37
2 1/2 (65) 16 57 73.8 7.7 62.0 9.6 125 48
3 (80 16 70 89.7 8.3 78.0 12.7 140 51
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