Approx Price:
Usage/Application: Oil Industries, Chemical Industries
Standard: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA
Number Of Holes: 4 / 8 / 12 / 16 / 20
Type: Weld Neck Flange Class 900
Material: Stainless Steel, Alloy Steel, Carbon Steel, Duplex Steel, Nickel Alloys
Flange Thickness: 22.3mm to 139.7mm
Weld Neck Flange Class 900 (ASME B16.5) Dimensions |
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| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | Bore | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | J | ||
| 1/2 | 15 | 120 | 22.3 | 38 | 21.3 | 60 | Welding Neck bore is derived from the pipe schedule | 34.9 | 7 | 82.6 | 1.6 |
| 3/4 | 20 | 130 | 25.4 | 44 | 26.7 | 70 | 42.9 | 7 | 88.9 | 1.6 | |
| 1 | 25 | 150 | 28.6 | 52 | 33.4 | 73 | 50.8 | 7 | 101.6 | 1.6 | |
| 1 1/4 | 32 | 160 | 28.6 | 64 | 42.2 | 73 | 63.5 | 7 | 111.1 | 1.6 | |
| 1 1/2 | 40 | 180 | 31.8 | 70 | 48.3 | 83 | 73 | 7 | 123.8 | 1.6 | |
| 2 | 50 | 215 | 38.1 | 105 | 60.3 | 102 | 92.1 | 7 | 165.1 | 1.6 | |
| 2 1/2 | 65 | 245 | 41.3 | 124 | 73 | 105 | 104.8 | 7 | 190.5 | 1.6 | |
| 3 | 80 | 240 | 38.1 | 127 | 88.9 | 102 | 127 | 7 | 190.5 | 1.6 | |
| 4 | 100 | 290 | 44.5 | 159 | 114.3 | 114 | 157.2 | 7 | 235 | 1.6 | |
| 5 | 125 | 350 | 50.8 | 190 | 141.3 | 127 | 185.7 | 7 | 279.4 | 1.6 | |
| 6 | 150 | 380 | 55.6 | 235 | 168.3 | 140 | 215.9 | 7 | 317.5 | 1.6 | |
| 8 | 200 | 470 | 63.5 | 298 | 219.1 | 162 | 269.9 | 7 | 393.7 | 1.6 | |
| 10 | 250 | 545 | 69.9 | 368 | 273 | 184 | 323.8 | 7 | 469.9 | 1.6 | |
| 12 | 300 | 610 | 79.4 | 419 | 323.8 | 200 | 381 | 7 | 533.4 | 1.6 | |
| 14 | 350 | 640 | 85.8 | 451 | 355.6 | 213 | 412.8 | 7 | 558.8 | 1.6 | |
| 16 | 400 | 705 | 88.9 | 508 | 406.4 | 216 | 469.9 | 7 | 616 | 1.6 | |
| 18 | 450 | 785 | 101.6 | 565 | 457 | 229 | 533.4 | 7 | 685.8 | 1.6 | |
| 20 | 500 | 855 | 108 | 622 | 508 | 248 | 584.2 | 7 | 749.3 | 1.6 | |
| 24 | 600 | 1040 | 139.7 | 749 | 610 | 292 | 692.2 | 7 | 901.7 | 1.6 | |
Class 900 Weld Neck Flange Stud & Bolt Dimensions |
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| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
| 1/2 | 15 | 4 | 3/4 | 110 | 7/8 | M20 | 2.3 |
| 3/4 | 20 | 4 | 3/4 | 115 | 7/8 | M20 | 2.7 |
| 1 | 25 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
| 1 1/4 | 32 | 4 | 7/8 | 125 | 1 | M24 | 4.6 |
| 1 1/2 | 40 | 4 | 1 | 140 | 1 1/8 | M27 | 5.9 |
| 2 | 50 | 8 | 7/8 | 145 | 1 | M24 | 11.5 |
| 2 1/2 | 65 | 8 | 1 | 160 | 1 1/8 | M27 | 16.5 |
| 3 | 80 | 8 | 7/8 | 145 | 1 | M24 | 14 |
| 4 | 100 | 8 | 1 1/8 | 170 | 1 1/4 | M30 | 23 |
| 5 | 125 | 8 | 1 1/4 | 190 | 1 3/8 | M33 | 39.5 |
| 6 | 150 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 50 |
| 8 | 200 | 12 | 1 3/8 | 220 | 1 1/2 | M36 | 80 |
| 10 | 250 | 16 | 1 3/8 | 235 | 1 1/2 | M36 | 118 |
| 12 | 300 | 20 | 1 3/8 | 255 | 1 1/2 | M36 | 148 |
| 14 | 350 | 20 | 1 1/2 | 275 | 1 5/8 | M39 | 182 |
| 16 | 400 | 20 | 1 5/8 | 285 | 1 3/4 | M42 | 225 |
| 18 | 450 | 20 | 1 7/8 | 325 | 2 | M48 | 300 |
| 20 | 500 | 20 | 2 | 350 | 2 1/8 | M52 | 373 |
| 24 | 600 | 20 | 2 1/2 | 440 | 2 5/8 | M64 | 680 |
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