ASME/ANSI B16.5 150 Class Weld Neck Flange/Standards, Dimensions & Weight
A Weld Neck Flange is a type of flange that is designed to be connected to a pipeline by butt welding. These flanges come in various specifications and are typically more expensive due to their elongated neck and the cost of skilled labor required to connect them to a pipeline or fitting. However, they are highly preferred for applications involving high stress. The necks or hubs of these flanges are responsible for transmitting stresses to the pipeline, and the gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides crucial reinforcement to the flange. The bore of the Weld Neck flange matches that of the pipeline, reducing turbulence and erosion.
- Our company is a manufacturer of ASME/ANSI B16.5 150LB WN Flange, which is precisely engineered in accordance with international quality standards. For detailed dimensions of 150 Class Weld Neck flange, kindly check the table below. Also, you can download the datasheet.
| Product | Weld Neck Flange |
|---|---|
| Pressure Rating | 150 lb, 150 Class |
| Dimensional Specification | ASME/ANSI B16.5 |
| Size | 1/2″ to 24″ |
| Surface Treatment | Anti-rust Oil, Paint, Zinc, Hot Dipped Galvanized |
| Grades | 304, 304L, 316L, 321, 347, 904L, Duplex, Carbon Steel, Nickel Alloys |
| Test Certificates | As per EN 10204 3.1 |
| Inspection | Videos, Pictures, Inspection Report with Goods |
| Pipe Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diam. of Hub |
Diameter of Raised Face | Hub Diam. Chamfer of W.N |
Length Hub.Y | Bore | Diam. of Bolt Circle |
Diam. of Bolt Holes |
Number of Bolts |
Diam. of Bolts (inch) |
Weight/PC in KGS | Weight/PC in LB | |
| inch | dn | O | C | X | G | A | Y | B | BC | BH | BN | BD | ||
| 1/2″ | 15 | 89.00 | 11.20 | 30.20 | 35.10 | 21.30 | 47.80 | 15.80 | 60.50 | 15.80 | 4 | 1/2″ | 0.7 | 1.5 |
| 3/4″ | 20 | 98.50 | 12.70 | 38.10 | 42.90 | 26.70 | 52.30 | 20.80 | 69.90 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1″ | 25 | 108.00 | 14.20 | 49.30 | 50.80 | 33.50 | 55.60 | 26.70 | 79.30 | 15.80 | 4 | 1/2″ | 1.1 | 2.4 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 58.70 | 63.50 | 42.20 | 57.20 | 35.10 | 88.90 | 15.80 | 4 | 1/2″ | 1.5 | 3.3 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 65.00 | 73.20 | 48.30 | 62.00 | 40.90 | 98.60 | 15.80 | 4 | 1/2″ | 1.8 | 4 |
| 2″ | 50 | 152.50 | 19.10 | 77.70 | 91.90 | 60.50 | 63.50 | 52.60 | 120.70 | 19.10 | 4 | 5/8″ | 2.7 | 6 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 90.40 | 104.60 | 73.20 | 69.90 | 62.70 | 139.70 | 19.10 | 4 | 5/8″ | 4.4 | 9.8 |
| 3″ | 80 | 190.50 | 23.90 | 108.00 | 127.00 | 88.90 | 69.90 | 78.00 | 152.40 | 19.10 | 4 | 5/8″ | 5.2 | 11.5 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 122.20 | 139.70 | 101.60 | 71.40 | 90.20 | 177.80 | 19.10 | 8 | 5/8″ | 6.4 | 14.2 |
| 4″ | 100 | 228.50 | 23.90 | 134.90 | 157.20 | 114.30 | 76.20 | 102.40 | 190.50 | 19.10 | 8 | 5/8″ | 7.5 | 16.6 |
| 5″ | 125 | 254.00 | 23.90 | 163.60 | 185.70 | 141.20 | 88.90 | 128.30 | 215.90 | 22.40 | 8 | 3/4″ | 9.2 | 20.2 |
| 6″ | 150 | 279.50 | 25.40 | 192.00 | 215.90 | 168.40 | 88.90 | 154.20 | 241.30 | 22.40 | 8 | 3/4″ | 11 | 24.3 |
| 8″ | 200 | 343.00 | 28.40 | 246.10 | 269.70 | 219.20 | 101.60 | 202.70 | 298.50 | 22.40 | 8 | 3/4″ | 18.4 | 40.6 |
| 10″ | 250 | 406.50 | 30.20 | 304.80 | 323.90 | 273.10 | 101.60 | 254.50 | 362.00 | 25.40 | 12 | 7/8″ | 25.5 | 56.2 |
| 12″ | 300 | 482.50 | 31.80 | 365.30 | 381.00 | 323.90 | 114.30 | 304.80 | 431.80 | 25.40 | 12 | 7/8″ | 37 | 81.4 |
| 14″ | 350 | 533.50 | 35.10 | 400.10 | 412.80 | 355.60 | 127.00 | 476.30 | 28.50 | 12 | 1″ | 51 | 113 | |
| 16″ | 400 | 597.00 | 36.60 | 457.20 | 469.90 | 406.40 | 127.00 | 539.80 | 28.50 | 16 | 1″ | 61.5 | 136 | |
| 18″ | 450 | 635.00 | 39.60 | 505.00 | 533.40 | 457.20 | 139.70 | 577.90 | 31.80 | 16 | 1 1/8″ | 71.5 | 158 | |
| 20″ | 500 | 698.50 | 42.90 | 558.80 | 584.20 | 508.00 | 144.50 | 635.00 | 31.80 | 20 | 1 1/8″ | 85 | 187 | |
| 24″ | 600 | 813.00 | 47.80 | 663.40 | 692.20 | 609.60 | 152.40 | 749.30 | 35.10 | 20 | 1 1/4″ | 119 | 262 | |