ANSI / ASME B16.5 Class 150 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 150 Threaded Flange
| 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 | 3.50 | 0.44 | 1.38 | 0.63 | 1.19 | 1 | 2.38 | 4 | 0.63 |
| 3/4 | 3.88 | 0.50 | 1.69 | 0.63 | 1.50 | 2 | 2.75 | 4 | 0.63 |
| 1 | 4.25 | 0.56 | 2.00 | 0.69 | 1.94 | 2 | 3.13 | 4 | 0.63 |
| 1 1/4 | 4.63 | 0.63 | 2.50 | 0.81 | 2.31 | 3 | 3.50 | 4 | 0.63 |
| 1 1/2 | 5.00 | 0.69 | 2.88 | 0.88 | 2.56 | 3 | 3.88 | 4 | 0.63 |
| 2 | 6.00 | 0.75 | 3.63 | 1.00 | 3.06 | 5 | 4.75 | 4 | 0.75 |
| 2 1/2 | 7.00 | 0.88 | 4.13 | 1.13 | 3.56 | 7 | 5.50 | 4 | 0.75 |
| 3 | 7.50 | 0.94 | 5.00 | 1.19 | 4.25 | 8 | 6.00 | 4 | 0.75 |
| 3 1/2 | 8.50 | 0.94 | 5.50 | 1.25 | 4.81 | 11 | 7.00 | 8 | 0.75 |
| 4 | 9.00 | 0.94 | 6.19 | 1.31 | 5.31 | 13 | 7.50 | 8 | 0.75 |
| 5 | 10.00 | 0.94 | 7.31 | 1.44 | 6.44 | 15 | 8.50 | 8 | 0.88 |
| 6 | 11.00 | 1.00 | 8.50 | 1.56 | 7.56 | 19 | 9.50 | 8 | 0.88 |
| 8 | 13.50 | 1.13 | 10.63 | 1.75 | 9.69 | 30 | 11.75 | 8 | 0.88 |
| 10 | 16.00 | 1.19 | 12.75 | 1.94 | 12.00 | 43 | 14.25 | 12 | 1.00 |
| 12 | 19.00 | 1.25 | 15.00 | 2.19 | 14.38 | 64 | 17.00 | 12 | 1.00 |
| 14 | 21.00 | 1.38 | 16.25 | 2.25 | 15.75 | 90 | 18.75 | 12 | 1.13 |
| 16 | 23.50 | 1.44 | 18.50 | 2.50 | 18.00 | 98 | 21.25 | 16 | 1.13 |
| 18 | 25.00 | 1.56 | 21.00 | 2.69 | 19.88 | 130 | 22.75 | 16 | 1.25 |
| 20 | 27.50 | 1.69 | 23.00 | 2.88 | 22.00 | 165 | 25.00 | 20 | 1.25 |
| 22 | 29.50 | 1.81 | 25.25 | 3.13 | 24.25 | 185 | 27.25 | 20 | 1.38 |
| 24 | 32.00 | 1.88 | 27.25 | 3.25 | 26.13 | 220 | 29.50 | 20 | 1.38 |
| 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 | 88.90 | 11.18 | 35.05 | 16.00 | 30.23 | 0.45 | 60.45 | 4 | 16.00 |
| 3/4 | 98.55 | 12.70 | 42.93 | 16.00 | 38.10 | 0.91 | 69.85 | 4 | 16.00 |
| 1 | 107.95 | 14.22 | 50.80 | 17.53 | 49.28 | 0.91 | 79.50 | 4 | 16.00 |
| 1 1/4 | 117.60 | 16.00 | 63.50 | 20.57 | 58.67 | 1.36 | 88.90 | 4 | 16.00 |
| 1 1/2 | 127.00 | 17.53 | 73.15 | 22.35 | 65.02 | 1.36 | 98.55 | 4 | 16.00 |
| 2 | 152.40 | 19.05 | 92.20 | 25.40 | 77.72 | 2.27 | 120.65 | 4 | 19.05 |
| 2 1/2 | 177.80 | 22.35 | 104.90 | 28.70 | 90.42 | 3.18 | 139.70 | 4 | 19.05 |
| 3 | 190.50 | 23.88 | 127.00 | 30.23 | 107.95 | 3.63 | 152.40 | 4 | 19.05 |
| 3 1/2 | 215.90 | 23.88 | 139.70 | 31.75 | 122.17 | 4.99 | 177.80 | 8 | 19.05 |
| 4 | 228.60 | 23.88 | 157.23 | 33.27 | 134.87 | 5.90 | 190.50 | 8 | 19.05 |
| 5 | 254.00 | 23.88 | 185.67 | 36.58 | 163.58 | 6.80 | 215.90 | 8 | 22.35 |
| 6 | 279.40 | 25.40 | 215.90 | 39.62 | 192.02 | 8.62 | 241.30 | 8 | 22.35 |
| 8 | 342.90 | 28.70 | 270.00 | 44.45 | 246.13 | 13.61 | 298.45 | 8 | 22.35 |
| 10 | 406.40 | 30.23 | 323.85 | 49.28 | 304.80 | 19.50 | 361.95 | 12 | 25.40 |
| 12 | 482.60 | 31.75 | 381.00 | 55.63 | 365.25 | 29.03 | 431.80 | 12 | 25.40 |
| 14 | 533.40 | 35.05 | 412.75 | 57.15 | 400.05 | 40.82 | 476.25 | 12 | 28.70 |
| 16 | 596.90 | 36.58 | 469.90 | 63.50 | 457.20 | 44.45 | 539.75 | 16 | 28.70 |
| 18 | 635.00 | 39.62 | 533.40 | 68.33 | 504.95 | 58.97 | 577.85 | 16 | 31.75 |
| 20 | 698.50 | 42.93 | 584.20 | 73.15 | 558.80 | 74.84 | 635.00 | 20 | 31.75 |
| 22 | 749.30 | 45.97 | 641.35 | 79.50 | 615.95 | 83.91 | 692.15 | 20 | 35.05 |
| 24 | 812.80 | 47.75 | 692.15 | 82.55 | 663.70 | 99.79 | 749.30 | 20 | 35.05 |
Features of Class 150 Threaded Flange
- Design: The flange has internal threads that allow it to be screwed directly onto the external threads of the pipe, eliminating the need for welding.
- Pressure Rating: Class 150 indicates that the flange is suitable for systems with a maximum working pressure of 150 psi.
- Applications: Suitable for low-pressure, non-critical pipe systems, especially in situations where welding cannot be performed. It is commonly used in the oil, natural gas, chemical, and maintenance industries.
- Materials: Typically made from carbon steel, stainless steel, alloy steel, and other materials.
- Standard: Conforms to ANSI / ASME B16.5 standards, ensuring consistency in dimensions, materials, and pressure ratings.
ANSI / ASME B16.5 Class 150 Threaded Flange is a type of flange that connects to a pipe using threads. The inner hole of the flange has threads that correspond to the outer threads of the pipe, allowing the flange to be screwed onto the pipe. This type of flange does not require welding, making it suitable for pipe connections where welding is not possible or should be avoided for certain applications.
For more technical support, please contact SSM.
FAQ
A Threaded Flange is a type of flange that connects to a pipe using internal threads that match the external threads of the pipe. It does not require welding, making it ideal for systems where welding is not feasible or desirable.
- No Welding Required: Threaded flanges are ideal for systems where welding is not possible or desirable.
- Ease of Installation: They are easy to install and can be screwed onto the pipe without the need for specialized welding equipment.
- Reusable: Since the connection is made through threading, the flanges can be removed and reused without damaging the pipe.
No, Threaded Flanges are typically used in low to medium-pressure systems. For high-pressure systems, welded flanges such as Weld Neck or Slip-on flanges are recommended.
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