Class 300 Flanges
We manufacture highly technical Class 300 Flanges and comply with ANSI-B16.5 Class 300 Slip-on Standards and are used for various Industry Application. Raw Materials used for fabrication of our material are Carbon Steel, Alloy Steel, Stainless Steel, Mild Steel which are available in different grades. Our product is mostly suitable to relatively low pressure piping systems.
| Class 300 Flanges to ASME B16.5 | ||||||||||||||||
| Nominal Size | Dimensions | Weight (kg) | ||||||||||||||
| Flange OD A mm |
Flange Thickness D mm |
Bore SOW SW B mm |
Raised Face Diam. G mm |
Length Thru Hub | Bolt Drilling | RF Stud Bolt Length mm |
RF Mach. Bolt Length mm |
SOW SW |
WN | Blind | ||||||
| DN | NPS | SOW, SW Threaded C mm |
W Neck C mm |
Circle Diam. K mm |
Hole Diam. H mm |
Bolts No. |
Bolt Diam. In |
|||||||||
| 15 | ½ | 95.3 | 14.2 | 22.4 | 35.1 | 22.4 | 52.3 | 66.5 | 15.7 | 4 | ½" | 65.0 | 55.0 | 0.6 | 0.8 | 0.6 |
| 20 | ¾ | 117.3 | 15.7 | 27.7 | 42.9 | 25.4 | 57.2 | 82.6 | 19.1 | 4 | ⅝" | 75.0 | 60.0 | 1.1 | 1.3 | 1.1 |
| 25 | 1 | 124.0 | 17.5 | 34.5 | 50.8 | 26.9 | 62.0 | 88.9 | 19.1 | 4 | ⅝" | 80.0 | 65.0 | 1.4 | 1.5 | 1.4 |
| 32 | 1¼ | 133.4 | 19.1 | 43.2 | 63.5 | 26.9 | 65.0 | 98.6 | 19.1 | 4 | ⅝" | 80.0 | 65.0 | 1.7 | 2.0 | 1.8 |
| 40 | 1½ | 155.5 | 20.6 | 49.5 | 73.2 | 30.2 | 68.3 | 114.3 | 22.4 | 4 | ¾" | 90.0 | 75.0 | 2.5 | 2.9 | 2.7 |
| 50 | 2 | 165.1 | 22.4 | 62.0 | 91.9 | 33.3 | 69.9 | 127.0 | 19.1 | 8 | ⅝" | 90.0 | 75.0 | 2.9 | 3.4 | 3.2 |
| 60 | 2½ | 190.5 | 25.4 | 74.7 | 104.6 | 38.1 | 76.2 | 149.4 | 22.4 | 8 | ¾" | 100.0 | 85.0 | 4.3 | 5.2 | 4.9 |
| 65 | 3 | 215.9 | 28.4 | 90.7 | 127.0 | 42.9 | 79.2 | 168.1 | 22.4 | 8 | ¾" | 110.0 | 90.0 | 5.9 | 6.9 | 6.8 |
| 80 | 3½ | 228.6 | 30.2 | 103.4 | 139.7 | 44.5 | 81.0 | 184.2 | 22.4 | 8 | ¾" | 110.0 | 95.0 | 7.3 | 8.7 | 8.7 |
| 90 | 4 | 254.0 | 31.8 | 116.1 | 157.2 | 47.8 | 85.9 | 200.2 | 22.4 | 8 | ¾" | 110.0 | 95.0 | 9.6 | 11.2 | 11.5 |
| 100 | 5 | 279.4 | 35.1 | 143.8 | 185.7 | 50.8 | 98.6 | 235.0 | 22.4 | 8 | ¾" | 120.0 | 100.0 | 12.3 | 15.1 | 15.6 |
| 125 | 6 | 317.5 | 36.6 | 170.7 | 215.9 | 52.3 | 98.6 | 269.7 | 22.4 | 12 | ¾" | 125.0 | 105.0 | 15.6 | 19.1 | 20.6 |
| 150 | 8 | 381.1 | 41.1 | 221.5 | 269.7 | 62.0 | 112.3 | 330.2 | 25.4 | 12 | ⅞" | 140.0 | 110.0 | 24.2 | 29.9 | 34.3 |
| 200 | 10 | 444.5 | 47.6 | 276.4 | 323.9 | 66.5 | 117.3 | 387.4 | 28.4 | 16 | 1" | 155.0 | 130.0 | 34.1 | 42.7 | 53.3 |
| 250 | 12 | 520.7 | 50.8 | 327.2 | 381.0 | 73.5 | 130.0 | 450.9 | 31.8 | 16 | 1⅛" | 170.0 | 145.0 | 49.8 | 61.8 | 78.8 |
| 300 | 14 | 584.2 | 53.8 | 359.2 | 412.5 | 76.2 | 142.7 | 514.4 | 31.8 | 20 | 1⅛" | 175.0 | 150.0 | 69.9 | 85.8 | 105.0 |
| 350 | 16 | 647.7 | 57.2 | 410.5 | 469.9 | 82.6 | 146.1 | 571.5 | 35.1 | 20 | 1¼" | 190.0 | 160.0 | 88.1 | 106.0 | 137.0 |
| 400 | 18 | 711.2 | 60.5 | 461.4 | 55.4 | 88.9 | 158.8 | 626.7 | 35.1 | 24 | 1¼" | 195.0 | 170.0 | 109.0 | 131.0 | 175.0 |
| 350 | 20 | 774.7 | 63.5 | 513.1 | 533.4 | 95.3 | 162.1 | 685.8 | 35.1 | 24 | 1¼" | 205.0 | 180.0 | 134.0 | 158.0 | 221.0 |
| 600 | 24 | 914.4 | 70.0 | 616.0 | 692.2 | 106.4 | 168.1 | 812.8 | 41.1 | 24 | 1½" | 230.0 | 195.0 | 201.0 | 230.0 | 339.0 |