
Honesty Steel & Alloys Ltd. is a leading Manufacturer, Exporter & Supplier of Alloy 20 Flanges, offering high-quality flanges for demanding industrial applications. Alloy 20, also known as Carpenter 20, is an austenitic nickel-iron-chromium alloy developed particularly for applications requiring excellent resistance to sulfuric acid and other aggressive chemical environments.
We manufacture and supply Alloy 20 Pipe Flanges, Alloy 20 Forged Flanges, Alloy 20 Welding Neck Flanges, Alloy 20 Slip-On Flanges, Alloy 20 Blind Flanges, Alloy 20 Socket Weld Flanges, Alloy 20 Threaded Flanges, and Alloy 20 Lap Joint Flanges according to applicable ASTM, ASME, ANSI, DIN, EN, and other international requirements.
Alloy 20 Forged Flanges are manufactured from forged Alloy 20 material to achieve the required flange geometry and mechanical integrity. Forging can provide a robust grain structure suitable for demanding piping connections. These flanges are available in welding neck, slip-on, blind, socket weld, threaded and other configurations.
Alloy 20 Pipe Flanges provide a detachable connection between piping components, valves, pumps and other equipment. They are available in different pressure classes, face configurations and sizes to meet project requirements.
Alloy 20 High Pressure Flanges are designed for piping systems requiring higher pressure ratings. Depending on the application, welding neck and other pressure-rated configurations can be selected. These flanges can be supplied in pressure classes such as 300, 600, 900, 1500 and 2500, subject to size and applicable dimensional standards.
Lap Joint ASTM B462 Alloy 20 Flanges are used with a corresponding stub end. The flange itself does not require welding directly to the pipe, making the configuration useful where frequent dismantling or alignment is required. B462 Alloy 20 Orifice Flanges are designed for use with orifice plates and differential-pressure flow measurement systems. They can incorporate provisions for pressure tapping connections.
| Specification | Details |
|---|---|
| Product | Alloy 20 Flanges |
| Material Type | Carpenter 20 |
| Standards | ASME, ASTM, ANSI, DIN, EN, BS, JIS |
| Common ASTM Specification | ASTM B462 |
| Common ASME Specification | ASME SB462 |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Nominal Size | 1/2" to 24" |
| Facing | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Manufacturing | Forged / Machined |
| Connection Types | Blind, Slip-On, Weld Neck, Socket Weld, Threaded, Lap Joint, etc. |
| Flanges Types | Blind Flanges (BLRF), Weld neck Flanges (WNRF), Drawing Flanges, Screwed (Threaded) Flanges, Long weld neck Flanges (LWNRF), Socket-weld Flanges (SWRF), Orifice Flanges, Reducing Flanges, Forged Flanges, Slip-on Flanges (SORF), Large Diameter Flanges, Spacer & Blind Flanges, Industrial Flanges, Spectacle Blind Flanges, Flat Face Flanges, Raised Face (RF) Flanges, Ring Type Joint Flanges (RTJ), Plate Flanges, Custom Flanges, Lap Joint Flanges (SOLJ), etc. |
| Surface | Machined / Polished as required |
| Testing | As per applicable specification |
| Marking | As per customer/specification requirements |
| STANDARD | WERKSTOFF NR. | UNS | AFNOR | EN |
|---|---|---|---|---|
| Alloy 20 | 2.4660 | N08020 | Z2NCUD31-20AZ | NiCr20CuMo |
| Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.0-4.0 | 32.0-38.0 | 19.0-21.0 | 29.85 min* | 2.0-3.0 | 0.045 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi – 35,000, MPa – 241 | 30% |
Alloy 20 Slip On Flanges
Alloy 20 Socket Weld Flanges
Alloy 20 Blind Flanges
Alloy 20 Weld Neck Flanges
Alloy 20 Threaded / Screwed Flanges
Alloy 20 Lap Joint Flanges
Alloy 20 Long Weld Neck Flanges
Alloy 20 Spectacle Blind Flanges
Alloy 20 Plate Flanges
Alloy 20 Ring Type Joint Flanges
Alloy 20 Tongue & Groove Flanges
Alloy 20 Reducing Flanges
Alloy 20 Nippo Flanges
Alloy 20 Orifice Flanges
Alloy 20 Square Flanges
Alloy 20 Spades Ring Spacers Flanges
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| American Standard | Standard Code | ANSI ASME SA-182 | ANSI ASME B16.5 | ASME – B 16.47 | ASME – B 16.36 | ||
| Standard Name | Forged Flanges | Slip on flange, Welding neck flange, Blind flange, Threaded flange, Lap joint flange, RTJ flange | Welding neck flange, Blind flange | Welding neck flange Slip on flange | |||
| German Standard | DIN 2527 | DIN 2573 / 2576 | DIN 2673 | DIN 2641 / 2642 | DIN 28115 | DIN PN10, PN16 | DIN PN20, PN25 |
| Steel Blind Flanges, BLRF | Flat Flange for Welding (Slip On) | Loose Flanges and Rings for Welding (Slip On Flanges and Plain Collars) | Lapped / Loose (Lap Joint) Flanges Plain Collars | Long Neck Welding Flanges | PN10 Flanges, DIN PN 10 Flanges, PN16 Flange | PN20 Flanges, DIN PN 25 Flanges | |
| Japanese Standard | JIS B2220 | JIS B2291 | JIS 5K, 10K | JIS 16K, 20K | JIS 30K, 40K | ||
| Slipon plate flange (SOP), Slipon Hub (SOH), Socket Welding flange (SW), Welding neck flange (WN), Lapjoint (LJ), Threaded flange (TR)/ Itegral flange (IT) Blank flange (BL) | Slipon plate flange (SOP), Slipon Hub (SOH), Socket Welding flange (SW), Welding neck flange (WN), Lapjoint (LJ), Threaded flange (TR)/ Itegral flange (IT) Blank flange (BL) | 5K SORF Flanges, 10K SOFF Flanges | 16K Blind Flanges, 20K BLRF Flanges | 30K Slip on Flanges, 40K Blind Flanges | |||
| Italian Standard | UNI FLANGES | ||||||
| Plan flanges (2276, 2277, 2278, 6083, 6084) Welding neck (2280, 2281, 2282, 2283, 2284, 2285, 2286) Lapped flanges (6088, 6089, 6090, 2999, 2300) Blind flanges (6091, 6092, 6093, 6094, 6095, 6096, 6097) threaded flanges (2253, 2254) | |||||||
| British Standard | BS 10 Table D | BS 10 Table E | BS 10 Table F | BS 10 Table H | |||
| BS 10 Table D Flanges, Table D Pipe Flange | BS 10 Table E Flanges, Table E Pipe Flange | BS 10 Table E Flanges, Table E Flanges | BS 10 Table E Flanges, Table E Pipe Flanges |
| Pipe Normal Diam. | O.D. Flange | Thk. of Flange Min | Diam. of Hub | Diameter of Raised Face | Length Hub. Y | Thread Length | Diam.of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | KG | LB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch | dn | O | C | X | G | Y | T | BC | BH | BN | BD | ||
| 1/2″ | 15 | 89.00 | 11.20 | 30.20 | 35.10 | 15.70 | 15.70 | 60.50 | 15.80 | 4 | 1/2″ | 0.4 | 0.9 |
| 3/4″ | 20 | 98.50 | 12.70 | 38.10 | 42.90 | 15.70 | 15.70 | 69.90 | 15.80 | 4 | 1/2″ | 0.7 | 1.5 |
| 1″ | 25 | 108.00 | 14.20 | 49.30 | 50.80 | 17.50 | 17.50 | 79.30 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 58.70 | 63.50 | 20.60 | 20.60 | 88.90 | 15.80 | 4 | 1/2″ | 1.2 | 2.6 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 65.00 | 73.20 | 22.40 | 22.40 | 98.60 | 15.80 | 4 | 1/2″ | 1.5 | 3.3 |
| 2″ | 50 | 152.50 | 19.10 | 77.70 | 91.90 | 25.40 | 25.40 | 120.70 | 19.10 | 4 | 5/8″ | 2.3 | 5.1 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 90.40 | 104.60 | 28.40 | 28.40 | 139.70 | 19.10 | 4 | 5/8″ | 3.7 | 8.1 |
| 3″ | 80 | 190.50 | 23.90 | 108.00 | 127.00 | 30.20 | 30.20 | 152.40 | 19.10 | 4 | 5/8″ | 4.1 | 9 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 122.20 | 139.70 | 31.80 | 31.80 | 177.80 | 19.10 | 8 | 5/8″ | 5.1 | 11.2 |
| 4″ | 100 | 228.50 | 23.90 | 134.90 | 157.20 | 33.30 | 33.30 | 190.50 | 19.10 | 8 | 5/8″ | 5.9 | 13 |
| 5″ | 125 | 254.00 | 23.90 | 163.60 | 185.70 | 36.60 | 36.60 | 215.90 | 22.40 | 8 | 3/4″ | 7 | 15.4 |
| 6″ | 150 | 279.50 | 25.40 | 192.00 | 215.90 | 39.60 | 39.60 | 241.30 | 22.40 | 8 | 3/4″ | 8.4 | 18.5 |
| 8″ | 200 | 343.00 | 28.40 | 246.10 | 269.70 | 44.50 | 44.50 | 298.50 | 22.40 | 8 | 3/4″ | 13 | 28.6 |
| 10″ | 250 | 406.50 | 30.20 | 347.80 | 323.90 | 49.30 | 49.30 | 362.00 | 25.40 | 12 | 7/8″ | 18 | 39.5 |
| 12″ | 300 | 482.50 | 31.80 | 365.30 | 381.00 | 55.60 | 55.60 | 431.80 | 25.40 | 12 | 7/8″ | 29 | 64 |
| 14″ | 350 | 533.50 | 35.10 | 400.10 | 412.80 | 57.20 | 57.20 | 476.30 | 28.50 | 12 | 1″ | 39 | 86 |
| 16″ | 400 | 597.00 | 36.60 | 457.20 | 469.90 | 63.50 | 63.50 | 539.80 | 28.50 | 16 | 1″ | 47 | 103 |
| 18″ | 450 | 635.00 | 39.60 | 505.00 | 533.40 | 68.30 | 68.30 | 577.90 | 31.80 | 16 | 1 1/8″ | 57 | 126 |
| 20″ | 500 | 698.50 | 42.90 | 558.80 | 584.20 | 73.20 | 73.20 | 635.00 | 31.80 | 20 | 1 1/8″ | 76 | 167 |
| 24″ | 600 | 813.00 | 47.80 | 663.40 | 692.20 | 82.60 | 82.60 | 749.30 | 35.10 | 20 | 1 1/4″ | 97 | 214 |
| Nominal Size | Outside Diameter (OD) |
Min. Thickness (T) |
RF Dia. (R) |
No. of Bolt Holes | Diameter of Holes | Bolt Circle (BC) |
SO Bore ID (SB) |
WN Bore ID (WB) |
Dia. Hub Base (HB) |
Dia. of Hub Top (HT) |
SO LTH (SL) |
WN LTH (WL) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 3.50 | 0.38 | 1.38 | 4 | 0.62 | 2.38 | 0.88 | 0.62 | 1.19 | 0.84 | 0.56 | 1.81 |
| 3⁄4 | 3.88 | 0.44 | 1.69 | 4 | 0.62 | 2.75 | 1.09 | 0.82 | 1.50 | 1.05 | 0.56 | 2.00 |
| 1 | 4.25 | 0.50 | 2.00 | 4 | 0.62 | 3.12 | 1.36 | 1.05 | 1.94 | 1.32 | 0.62 | 2.12 |
| 11⁄4 | 4.62 | 0.56 | 2.50 | 4 | 0.62 | 3.50 | 1.70 | 1.38 | 2.31 | 1.66 | 0.75 | 2.19 |
| 11⁄2 | 5.00 | 0.62 | 2.88 | 4 | 0.62 | 3.88 | 1.95 | 1.61 | 2.56 | 1.90 | 0.81 | 2.38 |
| 2 | 6.00 | 0.69 | 3.62 | 4 | 0.75 | 4.75 | 2.44 | 2.07 | 3.06 | 2.38 | 0.94 | 2.44 |
| 21⁄2 | 7.00 | 0.81 | 4.12 | 4 | 0.75 | 5.50 | 2.94 | 2.47 | 3.56 | 2.88 | 1.06 | 2.69 |
| 3 | 7.50 | 0.88 | 5.00 | 4 | 0.75 | 6.00 | 3.57 | 3.07 | 4.25 | 3.50 | 1.12 | 2.69 |
| 31⁄2 | 8.50 | 0.88 | 5.50 | 8 | 0.75 | 7.00 | 4.07 | 3.55 | 4.81 | 4.00 | 1.19 | 2.75 |
| 4 | 9.00 | 0.88 | 6.19 | 8 | 0.75 | 7.50 | 4.57 | 4.03 | 5.31 | 4.50 | 1.25 | 2.94 |
| 5 | 10.00 | 0.88 | 7.31 | 8 | 0.88 | 8.50 | 5.66 | 5.05 | 6.44 | 5.56 | 1.38 | 3.44 |
| 6 | 11.00 | 0.94 | 8.50 | 8 | 0.88 | 9.50 | 6.72 | 6.07 | 7.56 | 6.63 | 1.50 | 3.44 |
| 8 | 13.50 | 1.06 | 10.62 | 8 | 0.88 | 11.75 | 8.72 | 7.98 | 9.69 | 8.63 | 1.69 | 3.94 |
| 10 | 16.00 | 1.12 | 12.75 | 12 | 1.00 | 14.25 | 10.88 | 10.02 | 12.00 | 10.75 | 1.88 | 3.94 |
| 12 | 19.00 | 1.19 | 15.00 | 12 | 1.00 | 17.00 | 12.88 | 12.00 | 14.38 | 12.75 | 2.12 | 4.44 |
| 14 | 21.00 | 1.31 | 16.25 | 12 | 1.12 | 18.75 | 14.14 | 13.25 | 15.75 | 14.00 | 2.19 | 4.94 |
| 16 | 23.50 | 1.38 | 18.50 | 16 | 1.12 | 21.25 | 16.16 | 15.25 | 18.00 | 16.00 | 2.44 | 4.94 |
| 18 | 25.00 | 1.50 | 21.00 | 16 | 1.25 | 22.75 | 18.18 | 17.25 | 19.88 | 18.00 | 2.62 | 5.44 |
| 20 | 27.50 | 1.62 | 23.00 | 20 | 1.25 | 25.00 | 20.20 | 19.25 | 22.00 | 20.00 | 2.81 | 5.62 |
| 22 | 29.50 | 1.75 | 25.25 | 20 | 1.38 | 27.25 | 22.22 | 21.25 | 24.25 | 22.00 | 3.07 | 5.82 |
| 24 | 32.00 | 1.81 | 27.25 | 20 | 1.38 | 29.50 | 24.25 | 23.25 | 26.12 | 24.00 | 3.19 | 5.94 |
| Size in Inch | Size in mm | No of Bolts | Outer Dia. | Hub OD | ISO Stud Size | Flange Length | RF Height | Flange Thick. | RF Dia. | PCD | Hole Size | Socket Bore | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | C | D | F | B | E | G | H | ||||||
| 1/2 | 15 | 4 | 90 | 30 | M14 | 14 | 2 | 9.6 | 34.9 | 60.3 | 5/8 | 22.2 | 0.8 |
| 1 | 25 | 4 | 110 | 49 | M14 | 16 | 2 | 12.7 | 50.8 | 79.4 | 5/8 | 34.5 | 0.9 |
| 3/4 | 20 | 4 | 100 | 38 | M14 | 14 | 2 | 11.2 | 42.9 | 69.9 | 5/8 | 27.7 | 0.9 |
| 1 1/4 | 32 | 4 | 115 | 59 | M14 | 19 | 2 | 14.3 | 63.5 | 88.9 | 5/8 | 43.2 | 1.4 |
| 2 | 50 | 4 | 150 | 78 | M16 | 24 | 2 | 17.5 | 92.1 | 120.7 | 3/4 | 61.9 | 2.3 |
| 1 1/2 | 40 | 4 | 125 | 65 | M14 | 21 | 2 | 15.9 | 73 | 98.4 | 5/8 | 49.5 | 1.4 |
| 2 1/2 | 65 | 4 | 180 | 90 | M16 | 27 | 2 | 20.7 | 104.8 | 139.7 | 3/4 | 74.6 | 3.2 |
| 3 | 80 | 4 | 190 | 108 | M16 | 29 | 2 | 22.3 | 127 | 152.4 | 3/4 | 90.7 | 3.7 |
| 4 | 100 | 8 | 230 | 135 | M16 | 32 | 2 | 22.3 | 157.2 | 190.5 | 3/4 | 116.1 | 5.9 |
| 3 1/2 | 90 | 8 | 215 | 122 | M16 | 30 | 2 | 22.3 | 139.7 | 177.8 | 3/4 | 103.4 | 5 |
| 5 | 125 | 8 | 255 | 164 | M20 | 35 | 2 | 22.3 | 185.7 | 215.9 | 7/8 | 143.8 | 6.8 |
| 8 | 200 | 8 | 345 | 246 | M20 | 43 | 2 | 27 | 269.9 | 298.5 | 7/8 | 221.5 | 13.7 |
| 10 | 250 | 12 | 405 | 305 | M24 | 48 | 2 | 28.6 | 323.8 | 362 | 1 | 276.2 | 19.5 |
| 6 | 150 | 8 | 280 | 192 | M20 | 38 | 2 | 23.9 | 215.9 | 241.3 | 7/8 | 170.7 | 8.6 |
| 12 | 300 | 12 | 485 | 365 | M24 | 54 | 2 | 30.2 | 381 | 431.8 | 1 | 327 | 29 |
| 24 | 600 | 20 | 815 | 663 | M33 | 81 | 2 | 46.1 | 692.2 | 749.3 | 1 3/8 | 616 | 100 |
| 16 | 400 | 16 | 595 | 457 | M27 | 62 | 2 | 35 | 469.9 | 539.8 | 1 1/8 | 410.5 | 54 |
| 18 | 450 | 16 | 635 | 505 | M30 | 67 | 2 | 38.1 | 533.4 | 577.9 | 1 1/4 | 461.8 | 59 |
| 14 | 350 | 12 | 535 | 400 | M27 | 56 | 2 | 33.4 | 412.8 | 476.3 | 1 1/8 | 359.2 | 41 |
| 20 | 500 | 20 | 700 | 559 | M30 | 71 | 2 | 41.3 | 584.2 | 635 | 1 1/4 | 513.1 | 75 |
| Size in Inch | Size in mm | ISO Stud Size | RF Height | Outer Dia. | RF Dia. | Hole Size | PCD | No of Bolts | Bolt Size UNC | Flange Thickness | RF Stud Length | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | A | C | E | B | ||||||||
| 1/2 | 15 | M20 | 7 | 135 | 34.9 | 7/8 | 88.9 | 4 | 3/4 | 30.2 | 120 | 3.2 |
| 3/4 | 20 | M20 | 7 | 140 | 42.9 | 7/8 | 95.2 | 4 | 3/4 | 31.8 | 125 | 3.7 |
| 1 | 25 | M24 | 7 | 160 | 50.8 | 1 | 108 | 4 | 7/8 | 35 | 140 | 5 |
| 1 1/4 | 32 | M27 | 7 | 185 | 63.5 | 1 1/8 | 130.2 | 4 | 1 | 38.1 | 150 | 7.8 |
| 1 1/2 | 40 | M30 | 7 | 205 | 73 | 1 1/4 | 146 | 4 | 1 1/8 | 44.5 | 170 | 10.5 |
| 2 | 50 | M27 | 7 | 235 | 92.1 | 1 1/8 | 171.4 | 8 | 1 | 50.9 | 180 | 18 |
| 2 1/2 | 65 | M30 | 7 | 265 | 104.8 | 1 1/4 | 196.8 | 8 | 1 1/8 | 57.2 | 195 | 25.5 |
| 3 | 80 | M33 | 7 | 305 | 127 | 1 3/8 | 228.6 | 8 | 1 1/4 | 66.7 | 220 | 39 |
| 4 | 100 | M39 | 7 | 355 | 157.2 | 1 5/8 | 273 | 8 | 1 1/2 | 76.2 | 255 | 61.5 |
| 5 | 125 | M45 | 7 | 420 | 185.7 | 1 7/8 | 323.8 | 8 | 1 3/4 | 92.1 | 300 | 102 |
| 6 | 150 | M52 | 7 | 485 | 215.9 | 2 1/8 | 368.3 | 8 | 2 | 108 | 345 | 157 |
| 8 | 200 | M52 | 7 | 550 | 269.9 | 2 1/8 | 438.2 | 12 | 2 | 127 | 380 | 241 |
| 10 | 250 | M64 | 7 | 675 | 323.8 | 2 5/8 | 539.8 | 12 | 2 1/2 | 165.1 | 490 | 470 |
| 12 | 300 | M72 | 7 | 760 | 381 | 2 7/8 | 619.1 | 12 | 2 3/4 | 184.2 | 540 | 575 |
| NPS Of SWRF | Outer Diameter | Diameter of RF | Minimum Thickness | Hub Diameter | Bore Diameter | Socket Depth | Bolt Circle Diameter | Bolt Holes Diameter | Flanges Bolt Number |
|---|---|---|---|---|---|---|---|---|---|
| (NPS) | (O) | (R) | (tf) | (X) | (B1) | (B2) | (D) | (W) | (I) |
| 1/2 | 90 | 34.9 | 9.6 | 30 | 22.2 | 15.8 | 10 | 60.3 | 15.9 |
| 3/4 | 100 | 42.9 | 11.2 | 38 | 27.7 | 20.9 | 11 | 69.9 | 15.9 |
| 1 | 110 | 50.8 | 12.7 | 49 | 34.5 | 26.6 | 13 | 79.4 | 15.9 |
| 1 1/4 | 115 | 63.5 | 14.3 | 59 | 43.2 | 35.1 | 14 | 88.9 | 15.9 |
| 1 1/2 | 125 | 73.0 | 15.9 | 65 | 49.5 | 40.9 | 16 | 98.4 | 15.9 |
| 2 | 150 | 92.1 | 17.5 | 78 | 61.9 | 52.5 | 17 | 120.7 | 19.1 |
| 2 1/2 | 180 | 104.8 | 20.7 | 90 | 74.6 | 62.7 | 19 | 139.7 | 19.1 |
| 3 | 190 | 127.0 | 22.3 | 108 | 90.7 | 77.9 | 21 | 152.4 | 19.1 |
| Size in MM | Inner Diameter | Outer Diameter | Center to Center | Wall Thickness | Width Of Web | Thickness Of Web | Hole Diameter |
|---|---|---|---|---|---|---|---|
| 15 | 16 | 45 | 60 | 3 | 38 | 2 | 15.875 |
| 20 | 21 | 54 | 70 | 3 | 38 | 2 | 15.875 |
| 25 | 27 | 64 | 80 | 3 | 38 | 2 | 15.875 |
| 32 | 42 | 73 | 90 | 6.4 | 38 | 4 | 15.875 |
| 40 | 48 | 83 | 100 | 6.4 | 38 | 4 | 15.875 |
| 50 | 61 | 102 | 120 | 6.4 | 51 | 4 | 19.05 |
| 65 | 73 | 107 | 140 | 6.4 | 51 | 4 | 19.05 |
| 80 | 89 | 133 | 150 | 6.4 | 64 | 4 | 19.05 |
| 90 | 102 | 159 | 175 | 9.7 | 64 | 5 | 19.05 |
| 100 | 114 | 172 | 190 | 9.7 | 64 | 5 | 19.05 |
| 130 | 141 | 194 | 215 | 9.7 | 76 | 5 | 22.225 |
| 150 | 168 | 219 | 240 | 12.7 | 76 | 7 | 22.225 |
| 200 | 219 | 276 | 300 | 12.7 | 76 | 10 | 22.225 |
| 250 | 273 | 337 | 360 | 15.7 | 102 | 12 | 25.4 |
| 300 | 324 | 406 | 430 | 19.1 | 102 | 15 | 25.4 |
| 350 | 356 | 448 | 475 | 19.1 | 108 | 15 | 28.575 |
| 400 | 406 | 511 | 540 | 22.4 | 108 | 17 | 28.575 |
| 450 | 457 | 546 | 580 | 25.4 | 114 | 20 | 31.75 |
| 500 | 508 | 603 | 635 | 28.4 | 121 | 22 | 31.75 |
| 600 | 610 | 714 | 750 | 31.8 | 140 | 24 | 34.925 |
| Flange | Tolerance Table | |
|---|---|---|
| D | Inside Diameter (I.D.) |
|
| K | Length of hub |
|
| B | Diameter of contact face |
|
| A | O.D. (Outside Diameter) |
|
| J | Diameter of hub at base |
|
| P | Drilling |
|
| Eccentricity of bolt circle with respect to facing |
|
|
| H | Diameter of hub at point of welding |
|
| C | Thickness |
|
| ASME/ ANSI B16.5 | Pressure Rating | ||||||
|---|---|---|---|---|---|---|---|
| Temperature °F | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
| -20 to 100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
| 200 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
| 300 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
| 400 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
| 500 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
| 600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
| 650 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
| 700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
| 750 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
| 800 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
| 850 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
| 900 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
| 950 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
| 1000 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
| 1050 | 20 | 310 | 410 | 615 | 925 | 1545 | 2570 |
| 1100 | 20 | 255 | 345 | 515 | 770 | 1285 | 2145 |
| 1150 | 20 | 200 | 265 | 400 | 595 | 995 | 1655 |
| 1200 | 20 | 155 | 205 | 310 | 465 | 770 | 1285 |
| 1250 | 20 | 115 | 150 | 225 | 340 | 565 | 945 |
| 1300 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| 1350 | 20 | 60 | 80 | 125 | 185 | 310 | 515 |
| 1400 | 20 | 50 | 65 | 95 | 145 | 240 | 400 |
| 1450 | 15 | 35 | 45 | 70 | 105 | 170 | 285 |
| 1500 | 10 | 25 | 35 | 55 | 80 | 135 | 230 |