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Tolerance For butt Welding Fittings

ASME/ANSI B16.9

Tolerance For butt Welding Fittings

Tolerances are in millimeters. mm
ASME / ANSI B16.9
All Fittings 90กใ, 45กใ
Elbows and Tees
Reducers Caps 180กใ Returns Angularity Tolerance
Nominal
Pipe Size
Outside
Diameter
at Bevel
Inside
Diameter
at End
Wall
Thickness
Center to End Dimension Overall
Length
Overall
Length
Center to
Center
Dimension
Back to
face
Dimension
Alignment
of Ends
Nominal
Pipe Size
off
Angle
off
Plane
(in) D กก t A.B.C.M H E O K U (in) Q P
1/2to 21/2 +1.52-0.76 0.76 Not Less Than 87.5% of Nominal Thickness 1.52 1.52 3.05 6.35 6.35 0.76 1/2 to 4 0.76 1.51
3 to 31/2 1.52 1.52 1.52 1.52 3.05 6.35 6.35 0.75 5 to 8 1.52 3.05
4 1.52 1.52 1.52 1.52 3.05 6.35 6.36 0.76 10 to 12 2.29 4.83
5 to 8 +2.29-1.52 1.52 1.52 1.52 6.35 6.35 6.35 0.76 14 to 16 2.29 6.35
10 to 18 +4.06-3.05 3.05 2.29 2.29 6.35 9.65 6.35 1.52 18 to 24 3.05 9.65
20 to 24 +6.35-4.83 4.83 2.29 2.29 6.35 9.65 6.35 1.52 26 to 30 4.83 9.65
26 to 30 +6.35-4.83 4.83 3.05 4.83 9.65 - - - 32 to 36 4.83 12.7
32 to 36 +6.35-4.83 4.83 4.83 4.83 9.65 - - - กก    

Pipe Fitting
Pipe Fitting
Elbow
Tee
Reducer
Cap
Tolerance
Weld End
Hammer Union
Hammer Unions
Fig 50
Fig 100
Fig 200
Fig 206
Fig 207
Fig 400
Fig 600
Fig 602
Fig 1002
Fig 1003
Frac Tank Union
Frac tank unions
Frac tank union fittings
Front Manifold
Splitter valves
Pump Part
Pump Part
Casting Foundry
Rubber Hose
กก
Butterfly Valve Wafer check valve Balance valve Gate Valve Globe Valve Ball Valve Y Strainer Flange Pipe Fitting

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