ANSI / ASME B16.5 Class 2500 Threaded Flange Dimensions
Threaded flanges are commonly used in pipe connections where welding is not possible, such as in certain environments, hazardous conditions, or during maintenance. They are often used in industries like oil, natural gas, chemical processing, and petrochemicals.
ANSI / ASME B16.5 Class 2500 Threaded Flange
Class 2500 Threaded Flange Dimensions in inch/lbs
Class 2500 Threaded Flange Dimensions in mm/kg
Class 2500 Threaded Flange Dimensions in inch/lbs
| Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Hub Diameter (X) | Approximate Weight (lbs) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 4.75 | 0.88 | 1.38 | 1.25 | 1.50 | 4 | 3.25 | 4 | 0.88 |
| 3/4 | 5.13 | 1.00 | 1.69 | 1.38 | 1.75 | 5 | 3.50 | 4 | 0.88 |
| 1 | 5.88 | 1.13 | 2.00 | 1.63 | 2.06 | 8 | 4.00 | 4 | 1.00 |
| 1 1/4 | 6.25 | 1.13 | 2.50 | 1.63 | 2.50 | 9 | 4.38 | 4 | 1.00 |
| 1 1/2 | 7.00 | 1.25 | 2.88 | 1.75 | 2.75 | 12 | 4.88 | 4 | 1.13 |
| 2 | 8.50 | 1.50 | 3.63 | 2.25 | 4.13 | 25 | 6.50 | 8 | 1.00 |
| 2 1/2 | 9.63 | 1.63 | 4.13 | 2.50 | 4.88 | 36 | 7.50 | 8 | 1.13 |
| 3 | 10.50 | 1.88 | 5.00 | 2.88 | 5.25 | 48 | 8.00 | 8 | 1.25 |
| 4 | 12.25 | 2.13 | 6.19 | 3.56 | 6.38 | 73 | 9.50 | 8 | 1.38 |
| 5 | 14.75 | 2.88 | 7.31 | 4.13 | 7.75 | 130 | 11.50 | 8 | 1.63 |
| 6 | 15.50 | 3.25 | 8.50 | 4.69 | 9.00 | 165 | 12.50 | 12 | 1.50 |
| 8 | 19.00 | 3.63 | 10.63 | 5.63 | 11.50 | 260 | 15.50 | 12 | 1.75 |
| 10 | 23.00 | 4.25 | 12.75 | 625.00 | 14.50 | 435 | 19.00 | 12 | 2.00 |
| 12 | 26.50 | 4.88 | 15.00 | 7.13 | 17.75 | 580 | 22.50 | 16 | 2.13 |
Class 2500 Threaded Flange Dimensions in mm/kg
| Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Hub Diameter (X) | Approximate Weight (kg) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 120.65 | 22.35 | 35.05 | 31.75 | 38.10 | 1.81 | 82.55 | 4 | 22.35 |
| 3/4 | 130.30 | 25.40 | 42.93 | 35.05 | 44.45 | 2.27 | 88.90 | 4 | 22.35 |
| 1 | 149.35 | 28.70 | 50.80 | 41.40 | 52.32 | 3.63 | 101.60 | 4 | 25.40 |
| 1 1/4 | 158.75 | 28.70 | 63.50 | 41.40 | 63.50 | 4.08 | 111.25 | 4 | 25.40 |
| 1 1/2 | 177.80 | 31.75 | 73.15 | 44.45 | 69.85 | 5.44 | 123.95 | 4 | 28.70 |
| 2 | 215.90 | 38.10 | 92.20 | 57.15 | 104.90 | 11.34 | 165.10 | 8 | 25.40 |
| 2 1/2 | 244.60 | 41.40 | 104.90 | 63.50 | 123.95 | 16.33 | 190.50 | 8 | 28.70 |
| 3 | 266.70 | 47.75 | 127.00 | 73.15 | 133.35 | 21.77 | 203.20 | 8 | 31.75 |
| 4 | 311.15 | 54.10 | 157.23 | 90.42 | 162.05 | 33.11 | 241.30 | 8 | 35.05 |
| 5 | 374.65 | 73.15 | 185.67 | 104.90 | 196.85 | 58.97 | 292.10 | 8 | 41.40 |
| 6 | 393.70 | 82.55 | 215.90 | 119.13 | 228.60 | 74.84 | 317.50 | 12 | 38.10 |
| 8 | 482.60 | 92.20 | 270.00 | 143.00 | 292.10 | 117.93 | 393.70 | 12 | 44.45 |
| 10 | 584.20 | 107.95 | 323.85 | 15875.00 | 368.30 | 197.31 | 482.60 | 12 | 50.80 |
| 12 | 673.10 | 123.95 | 381.00 | 181.10 | 450.85 | 263.08 | 571.50 | 16 | 54.10 |
The ANSI / ASME B16.5 Class 2500 Threaded Flange is a high-pressure pipe flange designed for use in systems where threading is the preferred method of connection, eliminating the need for welding. The Class 2500 rating indicates that the flange is capable of handling very high pressures, up to 2500 pounds per square inch (PSI) at specified temperatures.
For more technical support, please contact SSM.
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