ASME B16.47 Series A Class 150 Flanges | Welding Neck
YANHAO is a manufacturer, supplier, and exporter of ASME B16.47 Series A Class 150 Welding Neck Flanges. ASME B16.47 Series A flanges are large diameter flanges capable of withstanding the pressure class of 150, suitable for large diameter pipes ranging from NPS 26 to NPS 60. The Welding Neck design adds higher strength and stability, capable of bearing larger pipeline loads, and is commonly used in large pipeline systems of various industries.
YANHAO’s ASME B16.47 Series A cast flanges are made of stainless steel, carbon steel, and alloy steel. We typically provide standard flanges; if you need to order flanges with special types and hole diameters, please contact our experts.
Class 150 dimensions | ASME B16.47 Series A Flange
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Bore (B) | Top of Hub (A) | Hub Diameter (X) | Minimum Fillet Radius (r) | Minimum Thickness (T) | Length Thru Hub (Y) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 34.25 | 31.75 | 29.50 | 24 | 1.38 | Specified by purchaser | 26.00 | 26.62 | 0.38 | 2.69 | 4.75 | 300 |
| 28 | 36.50 | 34.00 | 31.50 | 28 | 1.38 | Specified by purchaser | 28.00 | 28.62 | 0.44 | 2.81 | 4.94 | 345 |
| 30 | 38.75 | 36.00 | 33.75 | 28 | 1.38 | Specified by purchaser | 30.00 | 30.75 | 0.44 | 2.94 | 5.38 | 400 |
| 32 | 41.75 | 38.50 | 36.00 | 28 | 1.62 | Specified by purchaser | 32.00 | 32.75 | 0.44 | 3.19 | 5.69 | 505 |
| 34 | 43.75 | 40.50 | 38.00 | 32 | 1.62 | Specified by purchaser | 34.00 | 34.75 | 0.50 | 3.25 | 5.88 | 540 |
| 36 | 46.00 | 42.75 | 40.25 | 32 | 1.62 | Specified by purchaser | 36.00 | 36.75 | 0.50 | 3.56 | 6.19 | 640 |
| 38 | 48.75 | 45.25 | 42.25 | 32 | 1.62 | Specified by purchaser | 38.00 | 39.00 | 0.50 | 3.44 | 6.19 | 720 |
| 40 | 50.75 | 47.25 | 44.25 | 36 | 1.62 | Specified by purchaser | 40.00 | 41.00 | 0.50 | 3.56 | 6.44 | 775 |
| 42 | 53.00 | 49.50 | 47.00 | 36 | 1.62 | Specified by purchaser | 42.00 | 43.00 | 0.50 | 3.81 | 6.75 | 890 |
| 44 | 55.25 | 51.75 | 49.00 | 40 | 1.62 | Specified by purchaser | 44.00 | 45.00 | 0.50 | 4.00 | 7.00 | 990 |
| 46 | 57.25 | 53.75 | 51.00 | 40 | 1.62 | Specified by purchaser | 46.00 | 47.12 | 0.50 | 4.06 | 7.31 | 1060 |
| 48 | 59.50 | 56.00 | 53.50 | 44 | 1.62 | Specified by purchaser | 48.00 | 49.12 | 0.50 | 4.25 | 7.56 | 1185 |
| 50 | 61.75 | 58.25 | 55.50 | 44 | 1.88 | Specified by purchaser | 50.00 | 51.25 | 0.50 | 4.38 | 8.00 | 1270 |
| 52 | 64.00 | 60.50 | 57.50 | 44 | 1.88 | Specified by purchaser | 52.00 | 53.25 | 0.50 | 4.56 | 8.25 | 1410 |
| 54 | 66.25 | 62.75 | 59.50 | 44 | 1.88 | Specified by purchaser | 54.00 | 55.25 | 0.50 | 4.75 | 8.50 | 1585 |
| 56 | 68.75 | 65.00 | 62.00 | 48 | 1.88 | Specified by purchaser | 56.00 | 57.38 | 0.50 | 4.88 | 9.00 | 1760 |
| 58 | 71.00 | 67.25 | 64.00 | 48 | 1.88 | Specified by purchaser | 58.00 | 59.38 | 0.50 | 5.06 | 9.25 | 1915 |
| 60 | 73.00 | 69.25 | 66.00 | 52 | 1.88 | Specified by purchaser | 60.00 | 61.38 | 0.50 | 5.19 | 9.44 | 2045 |
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.
