Our Class 300 Forged Stainless Steel Flat Face Weld-Neck Flanges are manufactured from ASTM A182 dual grade 304/304L and 316/316L stainless steel, and the dimensions and tolerances meet ANSI/ASME B16.5 specifications. We manufacture these flanges in domestic (AIS) and import options, and our machine shop can modify ANSI/ASME flanges to spec.
Please contact us for a quote.
Downloads:
| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK 1 | THK 2 | Ø H.D. | Ø A (Weld Point) | Weight Lbs |
| SFFWN0050-30-S40 | 0.5 | 3.75 | 0.62 | 2.63 | 0.750 | 4 | 0.50 | 2.00 | 1.50 | 0.84 | 1.7 |
| SFFWN0075-30-S40 | 0.75 | 4.63 | 0.82 | 3.25 | 0.750 | 4 | 0.56 | 2.19 | 1.88 | 1.05 | 3.0 |
| SFFWN0100-30-S40 | 1 | 4.88 | 1.05 | 3.50 | 0.750 | 4 | 0.62 | 2.38 | 2.12 | 1.32 | 3.7 |
| SFFWN0125-30-S40 | 1.25 | 5.25 | 1.38 | 3.88 | 0.750 | 4 | 0.69 | 2.50 | 2.50 | 1.66 | 4.7 |
| SFFWN0150-30-S40 | 1.5 | 6.13 | 1.61 | 4.50 | 0.875 | 4 | 0.75 | 2.63 | 2.75 | 1.90 | 6.8 |
| SFFWN0200-30-S40 | 2 | 6.50 | 2.07 | 5.00 | 0.750 | 4 | 0.81 | 2.69 | 3.31 | 2.38 | 7.8 |
| SFFWN0250-30-S40 | 2.5 | 7.50 | 2.47 | 5.88 | 0.875 | 8 | 0.94 | 2.94 | 3.94 | 2.88 | 11.9 |
| SFFWN0300-30-S40 | 3 | 8.25 | 3.07 | 6.63 | 0.875 | 8 | 1.06 | 3.06 | 4.62 | 3.50 | 15.7 |
| SFFWN0350-30-S40 | 3.5 | 9.00 | 3.55 | 7.25 | 0.875 | 8 | 1.12 | 3.13 | 5.25 | 4.00 | 19.6 |
| SFFWN0400-30-S40 | 4 | 10.00 | 4.03 | 7.88 | 0.875 | 8 | 1.19 | 3.32 | 5.75 | 4.50 | 25.5 |
| SFFWN0500-30-S40 | 5 | 11.00 | 5.05 | 9.25 | 0.875 | 8 | 1.31 | 3.82 | 7.00 | 5.56 | 33.5 |
| SFFWN0600-30-S40 | 6 | 12.50 | 6.07 | 10.63 | 0.875 | 12 | 1.38 | 3.82 | 8.12 | 6.63 | 43.0 |
| SFFWN0800-30-S40 | 8 | 15.00 | 7.98 | 13.00 | 1.000 | 12 | 1.56 | 4.32 | 10.25 | 8.63 | 66.4 |
| SFFWN1000-30-S40 | 10 | 17.50 | 10.02 | 15.25 | 1.125 | 16 | 1.81 | 4.56 | 12.62 | 10.75 | 94.6 |
| SFFWN1200-30-S40 | 12 | 20.50 | 11.94 | 17.75 | 1.250 | 16 | 1.94 | 5.06 | 14.75 | 12.75 | 138.3 |
| SFFWN1400-30-S40 | 14 | 23.00 | 13.12 | 20.25 | 1.250 | 20 | 2.06 | 5.56 | 16.75 | 14.00 | 191.6 |
| SFFWN1600-30-S40 | 16 | 25.50 | 15.00 | 22.50 | 1.375 | 20 | 2.19 | 5.69 | 19.00 | 16.00 | 242.1 |
| SFFWN1800-30-S40 | 18 | 28.00 | 16.88 | 24.75 | 1.375 | 24 | 2.31 | 6.19 | 21.00 | 18.00 | 303.5 |
| SFFWN2000-30-S40 | 20 | 30.50 | 18.81 | 27.00 | 1.375 | 24 | 2.44 | 6.32 | 23.12 | 20.00 | 369.8 |
| SFFWN2200-30-STD | 22 | 33.00 | 21.25 | 29.25 | 1.625 | 24 | 2.56 | 6.44 | 25.25 | 22.00 | 402.2 |
| SFFWN2400-30-S40 | 24 | 36.00 | 22.62 | 32.00 | 1.625 | 24 | 2.69 | 6.56 | 27.62 | 24.00 | 543.3 |
