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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

Pump Part

Pump Part
Casting Foundry

 

Butterfly Valve Wafer check valve Balance valve Gate Valve Globe Valve Ball Valve Y Strainer Flange Pipe Fitting

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