ANSI / ASME B16.5 Class 2500 Weld Neck Flange Dimensions
B16.5 2500# Weld Neck Flange is a type of weld neck flange that conforms to the ASME B16.5 standard
ANSI / ASME B16.5 Class 2500 Weld Neck Flange
Class 2500 Weld Neck Flange Dimensions in Inch/lbs
Class 2500 Weld Neck Flange Dimensions in mm/kg
Class 2500 Weld Neck Flange Dimensions in Inch/lbs
| Nominal Pipe Size | Outside Diameter (Q) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Point of Weld (A) | Hub Diameter (X) | Bore (B) | Approximate Weight (lbs) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 5.25 | 1.19 | 1.38 | 2.88 | 0.84 | 1.69 | Specifed by purchaser | 7 | 3.50 | 4 | 0.88 |
| 3/4 | 5.50 | 1.25 | 1.69 | 3.13 | 1.05 | 2.00 | 8 | 3.75 | 4 | 0.88 | |
| 1 | 6.25 | 1.38 | 2.00 | 3.50 | 1.32 | 2.25 | 12 | 4.25 | 4 | 1.00 | |
| 1 1/4 | 7.25 | 1.50 | 2.50 | 3.75 | 1.66 | 2.88 | 17 | 5.13 | 4 | 1.13 | |
| 1 1/2 | 8.00 | 1.75 | 2.88 | 4.38 | 1.90 | 3.13 | 25 | 5.75 | 4 | 1.25 | |
| 2 | 9.25 | 2.00 | 3.63 | 5.00 | 2.38 | 3.75 | 42 | 6.75 | 8 | 1.13 | |
| 2 1/2 | 10.50 | 2.25 | 4.13 | 5.63 | 2.88 | 4.50 | 52 | 7.75 | 8 | 1.25 | |
| 3 | 12.00 | 2.63 | 5.00 | 6.63 | 3.50 | 5.25 | 94 | 9.00 | 8 | 1.38 | |
| 4 | 14.00 | 3.00 | 6.19 | 7.50 | 4.50 | 6.50 | 145 | 10.75 | 8 | 1.63 | |
| 5 | 16.50 | 3.63 | 7.31 | 9.00 | 5.56 | 8.00 | 245 | 12.75 | 8 | 1.88 | |
| 6 | 19.00 | 4.25 | 8.50 | 10.75 | 6.63 | 9.25 | 380 | 14.50 | 8 | 2.13 | |
| 8 | 21.75 | 5.00 | 10.63 | 12.50 | 8.63 | 12.00 | 580 | 17.25 | 12 | 2.13 | |
| 10 | 26.50 | 6.50 | 12.75 | 16.50 | 10.75 | 14.75 | 1075 | 21.25 | 12 | 2.63 | |
| 12 | 30.00 | 7.25 | 15.00 | 18.25 | 12.75 | 17.38 | 1525 | 24.38 | 12 | 2.88 |
Class 2500 Weld Neck Flange Dimensions in mm/kg
| Nominal Pipe Size | Outside Diameter (Q) | Thickness (T) | Raised Face Diameter (R) | Length Thru Hub (Y) | Point of Weld (A) | Hub Diameter (X) | Bore (B) | Approximate Weight (kg) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 133.4 | 30.2 | 35.1 | 73.2 | 21.3 | 42.9 | Specifed by purchaser | 3.2 | 88.9 | 4 | 22.4 |
| 3/4 | 139.7 | 31.8 | 42.9 | 79.5 | 26.7 | 50.8 | 3.6 | 95.3 | 4 | 22.4 | |
| 1 | 158.8 | 35.1 | 50.8 | 88.9 | 33.5 | 57.2 | 5.4 | 108.0 | 4 | 25.4 | |
| 1 1/4 | 184.2 | 38.1 | 63.5 | 95.3 | 42.2 | 73.2 | 7.7 | 130.3 | 4 | 28.7 | |
| 1 1/2 | 203.2 | 44.5 | 73.2 | 111.3 | 48.3 | 79.5 | 11.3 | 146.1 | 4 | 31.8 | |
| 2 | 235.0 | 50.8 | 92.2 | 127.0 | 60.5 | 95.3 | 19.1 | 171.5 | 8 | 28.7 | |
| 2 1/2 | 266.7 | 57.2 | 104.9 | 143.0 | 73.2 | 114.3 | 23.6 | 196.9 | 8 | 31.8 | |
| 3 | 304.8 | 66.8 | 127.0 | 168.4 | 88.9 | 133.4 | 42.6 | 228.6 | 8 | 35.1 | |
| 4 | 355.6 | 76.2 | 157.2 | 190.5 | 114.3 | 165.1 | 65.8 | 273.1 | 8 | 41.4 | |
| 5 | 419.1 | 92.2 | 185.7 | 228.6 | 141.2 | 203.2 | 111.1 | 323.9 | 8 | 47.8 | |
| 6 | 482.6 | 108.0 | 215.9 | 273.1 | 168.4 | 235.0 | 172.4 | 368.3 | 8 | 54.1 | |
| 8 | 552.5 | 127.0 | 270.0 | 317.5 | 219.2 | 304.8 | 263.1 | 438.2 | 12 | 54.1 | |
| 10 | 673.1 | 165.1 | 323.9 | 419.1 | 273.1 | 374.7 | 487.6 | 539.8 | 12 | 66.8 | |
| 12 | 762.0 | 184.2 | 381.0 | 463.6 | 323.9 | 441.5 | 691.7 | 619.3 | 12 | 73.2 |
The ASME B16.5 2500# Weld Neck Flange is a type of flange that complies with the ASME B16.5 standard and is suitable for Class 2500 pressure ratings. This flange is designed for extremely high-pressure and high-temperature environments, commonly used in critical applications in the oil and gas, chemical, and power industries.
Features of ASME B16.5 2500# Weld Neck Flange
- Standard: ASME B16.5
- Pressure Rating: Class 1500 (maximum working pressure of 1500 psi at ambient temperature).
- Type: Weld Neck Flange.
- Material: Carbon steel (e.g., ASTM A105), stainless steel (e.g., ASTM A182), alloy steel (e.g., ASTM A182 F11), etc.
- Facing Types: Raised face (RF), flat face (FF), ring-type joint (RTJ), etc.
Applications of ASME B16.5 2500# Weld Neck Flange
- Oil and Gas: Used for extremely high-pressure pipeline and equipment connections.
- Chemical Industry: Suitable for extremely high-pressure transportation systems of corrosive media.
- Power Industry: Used for extremely high-pressure steam and cooling water pipelines.
- Shipbuilding and Marine Engineering: Used for extremely high-pressure seawater and fuel systems.
- General Industry: Suitable for various extremely high-pressure fluid transportation systems.
The ASME B16.5 2500# Weld Neck Flange is a standard flange suitable for extremely high-pressure and high-temperature environments, widely used in critical applications in the oil and gas, chemical, and power industries. Proper selection, installation, and maintenance are key to ensuring its long-term and stable operation.
For more technical support, please contact SSM.
FAQ
- The maximum working pressure of a Class 2500 flange at ambient temperature is 2500 psi. The specific pressure-temperature ratings can be found in the ASME B16.5 standard.
- The main differences are in pressure rating and wall thickness:
- Class 2500 flanges are suitable for extremely high-pressure environments and have thicker walls.
- Class 1500 flanges are suitable for high-pressure environments and have thinner walls.
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