Flanges are called threaded flanges as it is mounted on pipe with help of female threading on the line and male threading on the pipe line. Threaded flanges are used in lines where fast dismantling is required and threaded flanges are mainly used in low pressure in line. It can also be used at places where in welding is not possible due to exploding nature of line fluid. We are recognised as quality threaded flange manufacturer in India.
| DIMENSIONS OF CLASS 300 FLANGES (ANSI B 16.5) (in mm) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Pipe Size |
Flange Dia 'O' |
Dia of Bolt Circle 'A' |
Dia of Bolt Holes 'D' |
No. of Holes |
Thk of Flange 'C' |
Diameter at Weld Bevel | Dia of Hub 'E' |
Length Through Hub | Bore 'B' | Dia of R/F R |
Depth of Socket F |
Length of Threading |
||||
| S/O & S/W Y |
W/N Y |
L/J Y |
S/O & S/W B |
L/J B |
||||||||||||
| 1/2'' | 15 | 95.2 | 66.7 | 15.9 | 4 | 14.3 | 21.3 | 38.1 | 22.2 | 52.4 | 22.2 | 22.3 | 22.9 | 34.9 | 9.5 | 15.9 |
| 3/4'' | 20 | 117.5 | 82.5 | 19.0 | 4 | 15.9 | 26.7 | 47.6 | 25.4 | 57.1 | 25.4 | 27.7 | 28.2 | 42.9 | 11.1 | 15.9 |
| 1'' | 25 | 123.8 | 88.9 | 19.0 | 4 | 17.5 | 33.5 | 54.0 | 27.0 | 61.9 | 27.0 | 34.5 | 35.0 | 50.8 | 12.7 | 17.5 |
| 1 ¼'' | 32 | 133.3 | 98.4 | 19.0 | 4 | 19.0 | 42.2 | 63.5 | 27.0 | 65.1 | 27.0 | 43.2 | 43.7 | 63.5 | 14.3 | 20.6 |
| 1 ½'' | 40 | 155.6 | 114.3 | 22.2 | 4 | 20.6 | 48.3 | 69.8 | 30.2 | 68.3 | 30.2 | 49.5 | 50.0 | 73.0 | 15.9 | 22.2 |
| 2'' | 50 | 165.1 | 127.0 | 19.0 | 8 | 22.2 | 60.4 | 84.1 | 33.3 | 69.8 | 33.3 | 62.0 | 62.5 | 92.1 | 17.5 | 25.4 |
| 2 ½'' | 65 | 190.5 | 149.2 | 22.2 | 8 | 25.4 | 73.1 | 100.0 | 38.1 | 76.2 | 38.1 | 74.7 | 75.4 | 104.8 | 19.0 | 28.6 |
| 3'' | 80 | 209.5 | 168.3 | 22.2 | 8 | 28.6 | 88.9 | 117.5 | 42.9 | 79.4 | 42.9 | 90.7 | 91.4 | 127.0 | 20.6 | 30.2 |
| 3 ½'' | 90 | 228.5 | 184.2 | 22.2 | 8 | 30.2 | 101.6 | 133.4 | 44.5 | 81.0 | 44.5 | 103.4 | 104.1 | 140.0 | 20.6 | 31.7 |
| 4'' | 100 | 254.0 | 200.0 | 22.2 | 8 | 31.8 | 114.3 | 146.0 | 47.6 | 85.7 | 47.6 | 116.1 | 116.8 | 157.2 | 23.8 | 33.3 |
| 5'' | 125 | 279.4 | 234.9 | 22.2 | 8 | 34.9 | 141.2 | 177.8 | 50.8 | 98.4 | 50.8 | 143.8 | 144.5 | 185.7 | - | 36.5 |
| 6'' | 150 | 317.5 | 269.9 | 22.2 | 12 | 36.5 | 168.4 | 206.4 | 52.4 | 98.4 | 52.4 | 170.7 | 171.4 | 215.9 | - | 39.7 |
| 8'' | 200 | 381.0 | 330.2 | 25.4 | 12 | 41.3 | 219.2 | 260.3 | 61.9 | 111.1 | 61.9 | 221.5 | 222.2 | 269.9 | - | 44.4 |
| 10'' | 250 | 444.5 | 387.3 | 28.6 | 16 | 47.6 | 273.0 | 320.7 | 66.7 | 117.5 | 95.2 | 276.3 | 277.4 | 323.8 | - | 49.2 |
| 12'' | 300 | 520.7 | 450.8 | 31.7 | 16 | 50.8 | 323.8 | 374.6 | 73.0 | 130.2 | 101.6 | 327.1 | 328.2 | 381.0 | - | 55.6 |
| 14'' | 350 | 584.2 | 514.3 | 31.7 | 20 | 54.0 | 355.6 | 425.4 | 76.2 | 142.9 | 111.1 | 359.1 | 360.2 | 412.7 | - | 57.1 |
| 16'' | 400 | 647.7 | 571.5 | 34.9 | 20 | 57.2 | 406.4 | 482.6 | 82.5 | 146.0 | 120.6 | 410.5 | 411.2 | 469.9 | - | 63.5 |
| 18'' | 450 | 711.2 | 628.5 | 34.9 | 24 | 60.3 | 457.2 | 533.4 | 88.9 | 158.7 | 130.2 | 461.8 | 462.3 | 533.4 | - | 68.3 |
| 20'' | 500 | 774.7 | 685.8 | 34.9 | 24 | 63.5 | 508.0 | 587.4 | 95.2 | 161.9 | 139.7 | 513.1 | 514.3 | 584.2 | - | 73.0 |
| 24'' | 600 | 914.4 | 812.8 | 41.3 | 24 | 69.8 | 609.6 | 701.7 | 106.4 | 168.3 | 152.4 | 615.9 | 615.9 | 692.1 | - | 82.5 |
Note : Thickness 'C' is inclusive of Raised Face Thickness of 1.65 MM. For Class 300
