ASME B16.5 Class 300 Flanges | Welding Neck
The ASME B16.5 Class 300 Weld Neck Flange is a fixed-parameter Weld neck flange that can withstand a pressure of 300 pounds force per square inch (PSIG) in the ANSI (American National Standards Institute) standard. YANHAO ASME B16.5 Class 300 Cast flanges are made of Stainless Steel, Carbon Steel, and Alloy Steel, and can be sealed with gaskets or O-rings. we also provide additional components such as flange gaskets, bolts, nuts, flange covers, or flange cover gaskets.
We usually provide standard bottle flanges; if you need to order flanges of special types and hole diameters, please get in touch with our experts.
Class 300 dimensions | ASME B16.5 Flange
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Bore (B) | Point of Weld (A) | Hub Diameter (X) | Thickness (T) | Length Thru Hub (Y) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3.75 | 2.62 | 1.38 | 4 | 0.63 | 0.62 | 0.84 | 1.50 | 0.50 | 2.00 | 2 |
| 3/4 | 4.62 | 3.25 | 1.69 | 4 | 0.75 | 0.82 | 1.05 | 1.88 | 0.56 | 2.19 | 3 |
| 1 | 4.88 | 3.50 | 2.00 | 4 | 0.75 | 1.05 | 1.32 | 2.12 | 0.62 | 2.38 | 4 |
| 1 1/4 | 5.25 | 3.88 | 2.50 | 4 | 0.75 | 1.38 | 1.66 | 2.50 | 0.69 | 2.50 | 5 |
| 1 1/2 | 6.12 | 4.50 | 2.88 | 4 | 0.88 | 1.61 | 1.90 | 2.75 | 0.75 | 2.63 | 7 |
| 2 | 6.50 | 5.00 | 3.62 | 8 | 0.75 | 2.07 | 2.38 | 3.31 | 0.81 | 2.69 | 9 |
| 2 1/2 | 7.50 | 5.88 | 4.12 | 8 | 0.88 | 2.47 | 2.88 | 3.94 | 0.94 | 2.94 | 12 |
| 3 | 8.25 | 6.62 | 5.00 | 8 | 0.88 | 3.07 | 3.50 | 4.62 | 1.06 | 3.06 | 15 |
| 3 1/2 | 9.00 | 7.25 | 5.50 | 8 | 0.88 | 3.55 | 4.00 | 5.25 | 1.12 | 3.13 | 18 |
| 4 | 10.00 | 7.88 | 6.19 | 8 | 0.88 | 4.03 | 4.50 | 5.75 | 1.19 | 3.32 | 25 |
| 5 | 11.00 | 9.25 | 7.31 | 8 | 0.88 | 5.05 | 5.56 | 7.00 | 1.31 | 3.82 | 32 |
| 6 | 12.50 | 10.62 | 8.50 | 12 | 0.88 | 6.07 | 6.63 | 8.12 | 1.38 | 3.82 | 42 |
| 8 | 15.00 | 13.00 | 10.62 | 12 | 1.00 | 7.98 | 8.63 | 10.25 | 1.56 | 4.32 | 67 |
| 10 | 17.50 | 15.25 | 12.75 | 16 | 1.12 | 10.02 | 10.75 | 12.62 | 1.81 | 4.56 | 91 |
| 12 | 20.50 | 17.75 | 15.00 | 16 | 1.25 | 12.00 | 12.75 | 14.75 | 1.94 | 5.06 | 140 |
| 14 | 23.00 | 20.25 | 16.25 | 20 | 1.25 | 13.25 | 14.00 | 16.75 | 2.06 | 5.56 | 180 |
| 16 | 25.50 | 22.50 | 18.50 | 20 | 1.38 | 15.25 | 16.00 | 19.00 | 2.19 | 5.65 | 250 |
| 18 | 28.00 | 24.75 | 21.00 | 24 | 1.38 | 17.25 | 18.00 | 21.00 | 2.31 | 6.19 | 320 |
| 20 | 30.50 | 27.00 | 23.00 | 24 | 1.38 | 19.25 | 20.00 | 23.12 | 2.44 | 6.32 | 400 |
| 22 | 33.00 | 29.25 | 25.25 | 24 | 1.63 | 21.25 | 22.00 | 25.25 | 2.56 | 6.44 | 465 |
| 24 | 36.00 | 32.00 | 27.25 | 24 | 1.63 | 23.25 | 24.00 | 27.62 | 2.69 | 6.56 | 580 |
Weld Neck Flange
Weld Neck Flange is a type of industrial pipe connection, especially used in pressure pipeline systems. Thanks to the high structural strength, sealing performance, corrosion resistance, and the characteristics of withstanding high temperature and pressure of the welding neck flange, it can be used for oil transportation pipelines, ship pipeline systems, and the transportation of raw materials in chemical plants, etc.
ANSI B16.5 Forged Flanges FLANGE CLASSES
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About YANHAO
YANHAO is a flange manufacturer located in Hebei Province, China. It is one of the few professional flange suppliers in China.
We have many years of experience in flange production and have multiple flange production lines. We have sufficient stock of raw materials, rich inventory, fast delivery, and can ship within three days. At the same time, the price is affordable. You are welcome to consult and purchase!
In addition, we can provide a variety of bespoke flanges and pipe fittings. Customers can give drawings or samples, and our company will produce them to fit your specific requirements.
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