Long Weld Neck Standard Connection Flanges

elbow-90

Dimensions of Ring-Joint Facings

elbow-90
  Nominal Pipe Size Groove Dimensions      Diameter of Raised Portion K
150 PSI 300 PSI 400 PSI 600 PSI 900 PSI 1500 PSI 2500 PSI Groove #  Pitch  Dia Depth  Width  Radius at Bottom 150 PSI 300  400 600 PSI 900 PSI 1500 PSI 2500 PSI Depth 
P  E F R  E
... 1/2 ... 1/2 ... ... ... R11 1-11/32 7/32 9/32 1/32 ... 2 ... ... ... 7/32
... ... ... ... ... 1/2 ... 12 1-9/16 1/4 11/32 1/32 ... ... 2-3/8 2-3/8 ... 1/4
... 3/4 ... 3/4 ... ... 1/2 13 1-11/16 1/4 11/32 1/32 ... 2-1/2 ... ... 2-9/16 1/4
... ... ... ... ... 3/4 ... 14 1-3/4 1/4 11/32 1/32 ... ... 2-5/8 2-5/8 ... 1/4
1 ... ... ... ... ... ... 15 1-7/8 1/4 11/32 1/32 2-1/2 ... ... ... ... 1/4
... 1 ... 1 ... 1 3/4 16 2 1/4 11/32 1/32 ... 2-3/4 2-13/16 2-13/16 2-7/8 1/4
1-1/4 ... ... ... ... ... ... 17 2-1/4 1/4 11/32 1/32 2-7/8 ... ... ... ... 1/4
... 1-1/4 ... 1-1/4 ... 1-1/4 1 18 2-3/8 1/4 11/32 1/32 ... 3-1/8 3-3/16 3-3/16 3-1/4 1/4
1-1/2 ... ... ... ... ... ... 19 2-9/16 1/4 11/32 1/32 3-1/4 ... ... ... ... 1/4
... 1-1/2 ... 1-1/2 ... 1-1/2 ... 20 2-11/16 1/4 11/32 1/32 ... 3-9/16 3-5/8 3-5/8 ... 1/4
... ... ... ... ... ... 1-1/4 21 2-27/32 5/16 15/32 1/32 ... ... ... ... 4 5/16
2 ... ... ... ... ... ... 22 3-1/4 1/4 11/32 1/32 4 ... ... ... ... 1/4
... 2 ... 2 ... ... 1-1/2 23 3-1/4 5/16 15/32 1/32 ... 4-1/4 ... ... 4-1/2 5/16
... ... ... ... ... 2 ... 24 3-3/4 5/16 15/32 1/32 ... ... 4-7/8 4-7/8 ... 5/16
2-1/2 ... ... ... ... ... ... 25 4 1/4 11/32 1/32 4-3/4 ... ... ... ... 1/4
... 2-/12 ... 2-1/2 ... ... 2 26 4 5/16 15/32 1/32 ... 5 ... ... 5-1/4 5/16
... ... ... ... ... 2-1/2 ... 27 4-1/4 5/16 15/32 1/32 ... ... ... 5-3/8 ... 5/16
... ... ... ... ... ... 2-1/2 28 4-3/8 3/8 17/32 1/16 ... ... ... ... 5-7/8 3/8
3 ... ... ... ... ... ... 29 4-1/2 1/4 11/32 1/32 5-1/4 ... ... ... ... 1/4
... ... ... ... ... ... ... 30 4-5/8 5/16 15/32 1/32 ... ... ... ... ... 5/16
... 3 ... 3 3 ... ... 31 4-7/8 5/16 15/32 1/32 ... 5-3/4 6-1/8 ... ... 5/16
... ... ... ... ... ... 3 32 5 3/8 17/32 1/16 ... ... ... ... 6-5/8 3/8
3-1/2 ... ... ... ... ... ... 33 5-3/16 1/4 11/32 1/32 6-1/16 ... ... ... ... 1/4
... 3-1/2 ... 3-1/2 ... ... ... 34 5-3/16 5/16 15/32 1/32 ... 6-1/4 ... ... ... 5/16
... ... ... ... ... 3 ... 35 5-3/8 5/16 15/32 1/32 ... ... ... 6-5/8 ... 5/16
4 ... ... ... ... ... ... 36 5-7/8 1/4 11/32 1/32 6-3/4 ... ... ... ... 1/4
... 4 4 4 4 ... ... 37 5-7/8 5/16 15/32 1/32 ... 6-7/8 7-1/8 ... ... 5/16
... ... ... ... ... ... 4 38 6-3/16 7/16 21/32 1/16 ... ... ... ... 8 7/16
... ... ... ... ... 4 ... 39 6-3/8 5/16 15/32 1/32 ... ... ... 7-5/8 ... 5/16
5 ... ... ... ... ... ... 40 6-3/4 1/4 11/32 1/32 7-5/8 ... ... ... ... 1/4
... 5 5 5 5 ... ... 41 7-1/8 5/16 15/32 1/32 ... 8-1/4 8-1/2 ... ... 5/16
... ... ... ... ... ... 5 42 7-1/2 1/2 25/32 1/16 ... ... ... 9-1/2 1/2
6 ... ... ... ... ... ... 43 7-5/8 1/4 11/32 1/32 8-5/8 ... ... ... ... 1/4
... ... ... ... ... 5 ... 44 7-5/8 5/16 15/32 1/32 ... ... ... 9 ... 5/16
... 6 6 6 6 ... ... 45 8-5/16 5/16 15/32 1/32 ... 9-1/2 9-1/2 ... ... 5/16

Dimensions in inches. Raised face height matches depth of groove.

elbow-90

Dimensions of Ring-Joint Facings

Nominal Pipe Size Groove Dimensions Diameter of Raised Portion K
150 PSI 300 PSI 400 PSI 600 PSI 900 PSI 1500 PSI 2500 PSI Groove #  Pitch  Dia Depth  Width  Radius at Bottom 150 PSI 300  400 600 PSI 900 PSI 1500 PSI 2500 PSI Depth 
P  E F R  E
... ... ... ... ... 6 ... R46 8-5/16 3/8 17/32 1/16 ... ... ... 9-3/4 ... 3/8
... ... ... ... ... ... 6 47 9 1/2 25/32 1/16 ... ... ... ... 11 1/2
8 ... ... ... ... ... ... 48 9-3/4 1/4 11/32 1/32 10-3/4 ... ... ... ... 1/4
... 8 8 8 8 ... ... 49 10-5/8 5/16 15/32 1/32 ... 11-7/8 12-1/8 ... ... 5/16
... ... ... ... ... 8 ... 50 10-5/8 7/16 21/32 1/16 ... ... ... 12-1/2 ... 7/16
... ... ... ... ... ... 8 51 11 9/16 29/32 1/16 ... ... ... ... 13-3/8 9/16
10 ... ... ... ... ... ... 52 12 1/4 11/32 1/32 13 ... ... ... ... 1/4
... 10 10 10 10 ... ... 53 12-3/4 5/16 15/32 1/32 ... 14 14-1/4 ... ... 5/16
... ... ... ... ... 10 ... 54 12-3/4 7/16 21/32 1/16 ... ... ... 14-5/8 ... 7/16
... ... ... ... ... ... 10 55 13-1/2 11/16 1-3/16 3/32 ... ... ... ... 16-3/4 11/16
12 ... ... ... ... ... ... 56 15 1/4 11/32 1/32 16 ... ... ... ... 1/4
... 12 12 12 12 ... ... 57 15 5/16 15/32 1/32 ... 16-1/4 16-1/2 ... ... 5/16
... ... ... ... ... 12 ... 58 15 9/16 29/32 1/16 ... ... ... 17-1/4 ... 9/16
14 ... ... ... ... ... ... 59 15-5/8 1/4 11/32 1/32 16-3/4 ... ... ... ... 1/4
... ... ... ... ... ... 12 60 16 11/16 1-5/16 3/32 ... ... ... ... 19-1/2 11/16
... 14 14 14 ... ... ... 61 16-1/2 5/16 15/32 1/32 ... 18 ... ... ... 5/16
... ... ... ... 14 ... ... 62 16-1/2 7/16 21/32 1/16 ... ... 18-3/8 ... ... 7/16
... ... ... ... ... 14 ... 63 16-1/2 5/8 1-1/16 3/32 ... ... ... 19-1/4 ... 5/8
16 ... ... ... ... ... ... 64 17-7/8 1/4 11/32 1/32 19 ... ... ... ... 1/4
... 16 16 16 ... ... ... 65 18-1/2 5/16 15/32 1/32 ... 20 ... ... ... 5/16
... ... ... ... 16 ... ... 66 18-1/2 7/16 21/32 1/16 ... ... 20-5/8 ... ... 7/16
... ... ... ... ... 16 ... 67 18-1/2 11/16 1-3/16 3/32 ... ... ... 21-1/2 ... 11/16
18 ... ... ... ... ... ... 68 20-3/8 1/4 11/32 1/32 21-1/2 ... ... ... ... 1/4
... 18 18 18 ... ... ... 69 21 5/16 15/32 1/32 ... 22-5/8 ... ... ... 5/16
... ... ... ... 18 ... ... 70 21 1/2 25/32 1/16 ... ... 23-3/8 ... ... 1/2
... ... ... ... ... 18 ... 71 21 11/16 1-3/16 3/32 ... ... ... 24-1/8 ... 11/16
20 ... 20 ... ... ... ... 72 22 1/4 11/33 1/32 23-1/2 ... ... ... ... 1/4
... 20 ... 20 ... ... ... 73 23 3/8 17/32 1/16 ... 25 ... ... ... 3/8
... ... ... ... 20 ... ... 74 23 1/2 25/32 1/16 ... ... 25-1/2 ... ... 1/2
... ... ... ... ... 20 ... 75 23 11/16 1-5/16 3/32 ... ... - 26-1/2 ... 11/16
24 ... ... ... ... ... ... 76 26-1/2 1/4 11/32 1/32 28 ... ... ... ... 1/4
... 24 24 24 ... ... ... 77 27-1/4 7/16 21/32 1/16 ... 29-1/2 ... ... ... 7/16
... ... ... ... 24 ... ... 78 27-1/4 5/8 1-1/16 3/32 ... ... 30-3/8 ... ... 5/8
... ... ... ... ... 24 ... 79 27-1/4 13/16 17/16 3/32 ... ... ... 31-1/4 ... 13/16

Dimensions in inches. Raised face height matches depth of groove.

Dimensional Tolerances B16.5 - 2003

Threaded, Socket-Welding, Slip-On, Lap Joint, and Blind Weld Neck
Outside Diameter (1) when the O.D. is 24" or less ±1/16" Outside Diameter (1) when the O.D. is 24" or less ±1/16" 
when the O.D. is over 24"  ±1/8" when the O.D. is over 24"  ±1/8" 
Inside Diameter Threaded within limites on boring gauge Inside Diameter = 10" ±1/32" 
Socket-Welding, Slip-On and Lap-Joint = 10"+1/32", -0"   =12"+1/16",-0" 12" through 18" ±1/16" 
=  20" +1/8", -1/16"
Outside Diameter of Hub (1) = 12" +3/32", -1/16"  Diameter of Contact Face  1/16" Raised Face ±1/32"        
= 14" ±1/8" 1/4" Raised Face Tongue & Groove Male, Famale  ±1/64"
Diameter of Contact Face  1/16" Raised Face ±1/32"         Diameter of Hub at Base (1) when Hub Base is 24" or less +1/16"        
1/4" Raised Face Tongue & Groove Male, Famale  ±1/64" when Hub Base is over 24" ±1/8"
Diameter of Counterbore Same as for Inside Diameter Diameter of Hub at Point of Welding NPS = 5" +3/32", -1/32"
NPS = 6" +5/32". -1/32"
Drilling Bolt Circle ±1/16" Drilling Bolt Circle ±1/16"
Bolt Hole Spacing ±1/32" Bolt Hole Spacing ±1/32"
Concentricity of Bolt Circle with Respect to Facing NPS = 2 1/2", 1/32" max    Concentricity of Bolt Circle with Respect to Facing NPS = 2 1/2" 1/32" max
NPS = 3", 1/16" max NPS = 3" 1/16" max
Thickness = 18" +1/8", -0" Thickness = 18" +1/8", -0"
= 20" +3/16",-0" = 20" +3/16",-0"
Length Through the Hub (1) = 18" +1/8", -1/32" Length Through the Hub NPS = 4" ±1/16"
5 = NPS = 10" +1/16", -1/8
=  20"  +3/16", -1/16" =  12" +1/8", -3/16

Welding Bevel Standards

for Wall Thickness "t" 3/16" to 3/4" incl.     for Wall Thickness "t" greater than 3/4"

elbow-90

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