Flange dimensions and weights to AWWA C228 Class SE standard. Every size we list is one we manufacture and ship, with custom sizes and modifications available on request.
Instant per-flange weight
Sizes, counts, lengths
Dimensional tolerances
Request a Product Catalog
Select a flange type to view the AWWA C228 Class SE flange dimensions, including outside diameter, inside diameter, bolt circle, number and size of bolt holes, thickness, and weight.
| API Int. Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Weight Lbs |
|---|---|---|---|---|---|---|---|---|
| SPF0200-E | 2 | 6.00 | 2.44 | 4.75 | 0.750 | 4 | 1.125 | 6.9 |
| SPF0250-E | 2.5 | 7.00 | 2.94 | 5.50 | 0.750 | 4 | 1.125 | 9.5 |
| SPF0300-E | 3 | 7.50 | 3.57 | 6.00 | 0.750 | 4 | 1.125 | 10.3 |
| SPF0400-E | 4 | 9.00 | 4.57 | 7.50 | 0.750 | 8 | 1.125 | 14.1 |
| SPF0500-E | 5 | 10.00 | 5.66 | 8.50 | 0.875 | 8 | 1.188 | 16.7 |
| SPF0600-E | 6 | 11.00 | 6.72 | 9.50 | 0.875 | 8 | 1.313 | 21.1 |
| SPF0800-E | 8 | 13.50 | 8.72 | 11.75 | 0.875 | 8 | 1.500 | 34.4 |
| SPF1000-E | 10 | 16.00 | 10.88 | 14.25 | 1.000 | 12 | 1.563 | 45.9 |
| SPF1200-E | 12 | 19.00 | 12.88 | 17.00 | 1.000 | 12 | 1.750 | 72.3 |
| SPF1400-E | 14 | 21.00 | 14.19 | 18.75 | 1.125 | 12 | 1.875 | 97.7 |
| SPF1600-E | 16 | 23.50 | 16.19 | 21.25 | 1.125 | 16 | 2.000 | 123.4 |
| SPF1800-E | 18 | 25.00 | 18.19 | 22.75 | 1.250 | 16 | 2.125 | 130.0 |
| SPF2000-E | 20 | 27.50 | 20.19 | 25.00 | 1.250 | 20 | 2.375 | 171.0 |
| SPF2200-E | 22 | 29.50 | 22.19 | 27.25 | 1.375 | 20 | 2.500 | 189.0 |
| SPF2400-E | 24 | 32.00 | 24.19 | 29.50 | 1.375 | 20 | 2.625 | 234.0 |
| SPF2600-E | 26 | 34.25 | 26.19 | 31.75 | 1.375 | 24 | 2.750 | 270.0 |
| SPF2800-E | 28 | 36.50 | 28.19 | 34.00 | 1.375 | 28 | 2.750 | 296.0 |
| SPF3000-E | 30 | 38.75 | 30.19 | 36.00 | 1.375 | 28 | 2.875 | 350.0 |
| SPF3200-E | 32 | 41.75 | 32.19 | 38.50 | 1.625 | 28 | 3.000 | 396.0 |
| SPF3400-E | 34 | 43.75 | 34.19 | 40.50 | 1.625 | 32 | 3.000 | 440.0 |
| SPF3600-E | 36 | 46.00 | 36.19 | 42.75 | 1.625 | 32 | 3.125 | 511.0 |
| SPF3800-E | 38 | 48.75 | 38.19 | 45.25 | 1.625 | 32 | 3.125 | 579.0 |
| SPF4000-E | 40 | 50.75 | 40.19 | 47.25 | 1.625 | 36 | 3.250 | 625.0 |
| SPF4200-E | 42 | 53.00 | 42.19 | 49.50 | 1.625 | 36 | 3.375 | 689.0 |
| SPF4400-E | 44 | 55.25 | 44.19 | 51.75 | 1.625 | 40 | 3.375 | 746.0 |
| SPF4600-E | 46 | 57.25 | 46.19 | 53.75 | 1.625 | 40 | 3.438 | 799.0 |
| SPF4800-E | 48 | 59.50 | 48.19 | 56.00 | 1.625 | 44 | 3.500 | 857.0 |
| SPF5000-E | 50 | 61.75 | 50.19 | 58.25 | 1.875 | 44 | 3.500 | 886.0 |
| SPF5200-E | 52 | 64.00 | 52.19 | 60.50 | 1.875 | 44 | 3.625 | 992.0 |
| SPF5400-E | 54 | 66.25 | 54.19 | 62.75 | 1.875 | 44 | 3.750 | 1082.0 |
| SPF6000-E | 60 | 73.00 | 60.19 | 69.25 | 1.875 | 52 | 3.875 | 1312.0 |
| SPF6600-E | 66 | 80.00 | 66.19 | 76.00 | 1.875 | 52 | 4.250 | 1735.0 |
| SPF7200-E | 72 | 86.50 | 72.19 | 82.50 | 1.875 | 60 | 4.375 | 2004.0 |
Each table lists, per nominal size: outside diameter, inside diameter, bolt circle, number and size of bolt holes, thickness, and weight. Dimensions and weights follow the AWWA C228 standard, and every C228 flange uses the ASME/ANSI Class 150 bolt pattern.
We manufacture to your specifications and stock domestic AIS/Buy America and imported materials, with galvanized, epoxy, and additional coatings available. Rubber expansion joints and gaskets are also supplied on request.
AWWA C228 Class SE flange dimensions are defined by nominal pipe size (NPS) and include outside diameter (OD), bolt circle (BC), number of bolt holes, hole diameter, and thickness.
Class SE flanges are typically available in sizes from 2" to 72" and follow drilling patterns compatible with ANSI/ASME Class 150. Exact dimensions vary by size and must be referenced from AWWA C228 standard tables.
Class SE pairs a high pressure rating with stainless steel corrosion resistance, so it fits demanding water and wastewater lines that also face humidity, chemicals, or high salinity. It keeps standard drilling, ANSI/ASME Class 150 through 24 inch and Class 150 Series A from 26 inch and larger, so it still bolts to matching flanges.
AWWA C228 Class SE flanges are rated for 275 psi at atmospheric temperature.
It can be, where corrosion resistance matters. C228 mirrors much of C207’s dimensional layout, so it usually fits the same bolt pattern, but it is its own standard in stainless steel with its own thickness and rating tables. Match the class, size, and service before using it in place of carbon steel C207.
API International stocks the pipe sizes, pressure classes, and materials you need for your project. Our machine shop can also modify stock products to accommodate any special project requirements. Contact API International’s experienced sales team, and we will help you select the right flange for your application.
