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Dimension of cut grooved end

Cut groove is to machine away material from outer surface of pipe, fitting and valves, so to get the specific groove. It can keep the integrity of the inner surface without raised part.
It is suitable for steel pipe with heavy thickness, such as SCH80. Besides, it is also commonly used for fire protection valves, and grooved pipe fittings over 6″ (DN150).
grooved end

Cut groove as ANSI/AWWA C606

Cut groove as ANSI/AWWA C606
Nominal size Pipe OD Min wall Thickness (T) Gasket seat (A)±0.79 Groove width (B)±0.79 Groove diameter (C) Groove depth (D)
OD Tolerance (mm) Average Tolerance +0.00
Inch DN mm - + mm mm mm mm mm mm
1" 25 33.4 0.33 0.33 3.38 15.88 7.92 30.23 -0.38 /
1-1/4" 32 42.2 0.41 0.41 3.56 15.88 7.92 38.99 -0.38 /
1-1/2" 40 48.3 0.48 0.48 3.68 15.88 7.92 45.09 -0.38 /
2" 50 60.3 0.61 0.61 3.91 15.88 7.92 57.15 -0.38 /
2-1/2" 65 73.0 0.74 0.74 4.78 15.88 7.92 69.09 -0.46 /
3" 80 88.9 0.79 0.89 4.78 15.88 7.92 84.94 -0.46 /
4" 100 114.3 0.79 1.14 5.16 15.88 9.53 110.08 -0.51 /
5" 125 141.3 0.79 1.42 5.16 15.88 9.53 137.03 -0.56 /
6" 150 168.3 0.79 1.57 5.56 15.88 9.53 163.96 -0.56 /
8" 200 219.1 0.79 1.57 6.05 19.05 11.13 214.40 -0.64 /
10" 250 273.1 0.79 1.57 6.35 19.05 12.7 268.27 -0.69 /
12" 300 323.9 0.79 1.57 7.09 19.05 12.7 318.29 -0.76 /
Note:
1. Pipe OD: The outside diameter of cut grooved pipe.
2. Min wall thickness (T): This is the minimum allowable pipe wall thickness which could be cut grooved.
3. Gasket seat (A): It is measured from the pipe end to groove, for gasket seating.
4. Groove width (B): It shall be free of scale, dirt, chips, and rust that may interfere with proper coupling assembly.
5. Groove diameter (C): It shall be uniform groove diameter for the entire pipe circumference.
6. Groove depth (D): It is measured from pipe outer surface to groove outer surface.

Cut groove as ISO 6182-12

Cut groove as ISO 6182-12
Nominal size Pipe OD Min wall Thickness (T) Gasket seat (A)±0.76 Groove width (B)±0.76 Groove diameter (C) Groove depth (D)
OD Tolerance (mm) Actual Tolerance +0.00
Inch DN mm - + mm mm mm mm mm mm
1" 25 33.7 0.33 0.33 3.38 15.88 7.95 30.23 -0.38 1.73
1-1/4" 32 42.4 0.41 0.41 3.56 15.88 7.95 38.99 -0.38 1.70
1-1/2" 40 48.3 0.48 0.48 3.68 15.88 7.95 45.09 -0.38 1.60
2" 50 60.3 0.61 0.61 3.91 15.88 7.95 57.15 -0.38 1.57
2-1/2" 65 73.0 0.74 0.74 4.78 15.881 7.952 69.09 -0.46 1.95
2-1/2" 65 76.1 0.76 0.76 4.78 15.88 7.95 72.26 -0.46 1.92
3" 80 88.9 0.79 0.89 4.78 15.88 7.95 84.94 -0.46 1.98
4" 100 114.3 0.79 1.14 5.16 15.88 9.53 110.08 -0.51 2.11
5" 125 139.7 0.79 1.42 5.16 15.88 9.53 135.48 -0.51 2.11
5" 125 141.3 0.79 1.42 5.20 15.881 9.522 137.03 -0.56 2.13
6" 150 165.1 0.79 1.60 5.56 15.88 9.53 160.78 -0.56 2.16
6" 150 168.3 0.79 1.60 5.60 15.881 9.532 163.96 -0.56 2.17
8" 200 219.1 0.79 1.60 6.05 19.05 11.13 214.40 -0.64 2.35
10" 250 273.0 0.79 1.60 6.35 19.05 12.70 268.28 -0.69 2.36
12" 300 323.9 0.79 1.60 7.09 19.05 12.7 318.29 -0.76 2.80
Note:
1. 1 means A tolerance is ±0.79, not ±0.76.
2. 2 means B tolerance is +0.79/-0, not ±0.76.
Regarding the dimension of cut grooved end, please refer to above 2 charts. If you have any technical question, please email or leave message to us info@tpmcsteel.com, and we will be glad to reply you.
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