ASME B16.5 reducing flanges are a types of flanges that belong to the ASME B16.5 specification. This standard specification covers flanged fittings and steel pipe flanges of NPS ½ to NPS24 sizes. There are different pressure classes to these flanges ranging from 150 to 2500. The ASME B16 5 blind flange 1500 lbs is one of the high pressure flange range. The flanges vary in shape, size, dimensions and in material grades. The ANSI B16.5 slip on flange is a flared out in order to allow the pipes to slip through it and make the connection at the desired precise location. For this purpose, the seamless pipes are often used with the slip on flanges.
ASME B16.5 Flanges
ASME B16 5 Class 300 Flanges
The ASME B16.5 threaded flange has threads on it. Usually, the threaded flanges have female threads to fit with the pipe ends with male threads. The threaded flanges can also be welded after connection for better tightness. There are different face types to flanges such as raised face, flat face and ring type joint. The Lap joint flange asme b16.5 has a lap that can be joint to the pipes and then be welded. The different shapes and types of flanges are used in different application types. The ANSI B16.5 stainless steel flange is made in different grades of materials as well. The 304 austenitic stainless steel is the most used grade for flanges because it is low cost, strong and long lasting.
As far as corrosion resistance is considered, the ANSI B16.5 class 150 welding neck flanges are made from the 316 austenitic stainless steel next to the 304 grade. The sizes of the flanges range based on the standards they belong to. The ASME B16.5 class 300 flange is a medium range pressure capable flange. The applications of the flanges are in the oil and gas, water lines, petroleum, petrochemical and in other general corrosive services, domestic pipelines and industrial pipelines as well.
| ASME B16 5 Flange Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
|---|---|
| ANSI B16.5 Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flange, ASME Flange, BS Flange, DIN Flange, EN Flange, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| ANSI B16.5 Flange Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| ANSI B16.5 Flange Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Most common types of ANSI B16.5 | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production technique |
|
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Manufacturer of | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. ANSI B16.5: -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, , Groove |
| Special design | As per your drawing
AS, ANSI, BS, DIN and JIS |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| ANSI B16.5 Flange Uses & application |
|
| Carbon Steel ASME B16.5 Flange | ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80) |
| Stainless Steel ASME B16.5 Flange | ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409 |
| Alloy Steel ASME B16.5 Flange | ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91 |
| Titanium ANSI B16.5 Flange | ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7 ASTM R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5 |
| Copper ASME B16.5 Flange | T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc |
| Copper Nickel ASME B16.5 Flange | ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640 |
| Brass ASME B16.5 Flange | 3602 / 2604 / H59 / H62 / etc. |
| Inconel ANSI B16.5 Flange | ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 ASME B16.5 |
| Hastelloy ASME B16.5 Flange | ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flange |
| Monel ASME B16.5 Flange | ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500) |
| Alloy 20 ASME B16.5 Flange | ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3 |
| Aluminium ASME B16.5 Flange | 5052 /6061/ 6063 / 2017 / 7075 / etc. |
| Nickel ANSI B16.5 Flange | ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC |
| Duplex ASME B16.5 Flange | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Super Duplex ASME B16.5 Flange | S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Incoloy ASME B16.5 Flange | ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flange |
| 254 Smo ANSI B16.5 Flange | ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547 |
| Nimonic ASME B16.5 Flange | Nimonic 75, Nimonic 80A, Nimonic 90 |
| Other ANSI B16.5 Flange material | Tin bronze, Alumunum bronze, Lead bronze |
| 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 |
| 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. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 3.75 | 0.50 | 1.38 | 4 | 0.63 | 2.62 | 0.88 | 0.62 | 1.50 | 0.84 | 0.81 | 2.00 |
| 3⁄4 | 4.62 | 0.56 | 1.69 | 4 | 0.75 | 3.25 | 1.09 | 0.82 | 1.88 | 1.05 | 0.94 | 2.19 |
| 1 | 4.88 | 0.62 | 2.00 | 4 | 0.75 | 3.50 | 1.36 | 1.05 | 2.12 | 1.32 | 1.00 | 2.38 |
| 11⁄4 | 5.25 | 0.69 | 2.50 | 4 | 0.75 | 3.88 | 1.70 | 1.38 | 2.50 | 1.66 | 1.00 | 2.50 |
| 11⁄2 | 6.12 | 0.75 | 2.88 | 4 | 0.88 | 4.50 | 1.95 | 1.61 | 2.75 | 1.90 | 1.13 | 2.63 |
| 2 | 6.50 | 0.81 | 3.62 | 8 | 0.75 | 5.00 | 2.44 | 2.07 | 3.31 | 2.38 | 1.25 | 2.69 |
| 21⁄2 | 7.50 | 0.94 | 4.12 | 8 | 0.88 | 5.88 | 2.94 | 2.47 | 3.94 | 2.88 | 1.44 | 2.94 |
| 3 | 8.25 | 1.06 | 5.00 | 8 | 0.88 | 6.62 | 3.57 | 3.07 | 4.62 | 3.50 | 1.63 | 3.06 |
| 31⁄2 | 9.00 | 1.12 | 5.50 | 8 | 0.88 | 7.25 | 4.07 | 3.55 | 5.25 | 4.00 | 1.69 | 3.13 |
| 4 | 10.00 | 1.19 | 6.19 | 8 | 0.88 | 7.88 | 4.57 | 4.03 | 5.75 | 4.50 | 1.82 | 3.32 |
| 5 | 11.00 | 1.31 | 7.31 | 8 | 0.88 | 9.25 | 5.66 | 5.05 | 7.00 | 5.56 | 1.94 | 3.82 |
| 6 | 12.50 | 1.38 | 8.50 | 12 | 0.88 | 10.62 | 6.72 | 6.07 | 8.12 | 6.63 | 2.00 | 3.82 |
| 8 | 15.00 | 1.56 | 10.62 | 12 | 1.00 | 13.00 | 8.72 | 7.98 | 10.25 | 8.63 | 2.38 | 4.32 |
| 10 | 17.50 | 1.81 | 12.75 | 16 | 1.12 | 15.25 | 10.88 | 10.02 | 12.62 | 10.75 | 2.56 | 4.56 |
| 12 | 20.50 | 1.94 | 15.00 | 16 | 1.25 | 17.75 | 12.88 | 12.00 | 14.75 | 12.75 | 2.82 | 5.06 |
| 14 | 23.00 | 2.06 | 16.25 | 20 | 1.25 | 20.25 | 14.14 | 13.25 | 16.75 | 14.00 | 2.94 | 5.56 |
| 16 | 25.50 | 2.19 | 18.50 | 20 | 1.38 | 22.50 | 16.16 | 15.25 | 19.00 | 16.00 | 3.19 | 5.69 |
| 18 | 28.00 | 2.31 | 21.00 | 24 | 1.38 | 24.75 | 18.18 | 17.25 | 21.00 | 18.00 | 3.44 | 6.19 |
| 20 | 30.50 | 2.44 | 23.12 | 24 | 1.38 | 27.00 | 20.20 | 19.25 | 23.12 | 20.00 | 3.69 | 6.32 |
| 22 | 33.00 | 2.57 | 25.25 | 24 | 1.63 | 29.25 | 22.22 | 21.25 | 25.25 | 22.00 | 3.93 | 6.43 |
| 24 | 36.00 | 2.69 | 27.62 | 24 | 1.63 | 32.00 | 24.25 | 23.25 | 27.62 | 24.00 | 4.13 | 6.56 |
| 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) | Dia. Hub Base (HB) | Dia. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) | * WN Bore ID (WB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 3.75 | 0.56 | 1.38 | 4 | 0.63 | 2.62 | 0.88 | 1.5 | 0.84 | 0.88 | 2.06 | * |
| 3⁄4 | 4.62 | 0.62 | 1.69 | 4 | 0.75 | 3.25 | 1.09 | 1.88 | 1.05 | 1.00 | 2.25 | * |
| 1 | 4.88 | 0.69 | 2.00 | 4 | 0.75 | 3.50 | 1.36 | 2.12 | 1.32 | 1.06 | 2.44 | * |
| 11⁄4 | 5.25 | 0.81 | 2.50 | 4 | 0.75 | 3.88 | 1.70 | 2.50 | 1.66 | 1.12 | 2.62 | * |
| 11⁄2 | 6.12 | 0.88 | 2.88 | 4 | 0.88 | 4.50 | 1.95 | 2.75 | 1.90 | 1.25 | 2.75 | * |
| 2 | 6.50 | 1.00 | 3.62 | 8 | 0.75 | 5.00 | 2.44 | 3.31 | 2.38 | 1.44 | 2.88 | * |
| 21⁄2 | 7.50 | 1.12 | 4.12 | 8 | 0.88 | 5.88 | 2.94 | 3.94 | 2.88 | 1.62 | 3.12 | * |
| 3 | 8.25 | 1.25 | 5.00 | 8 | 0.88 | 6.62 | 3.57 | 4.62 | 3.50 | 1.81 | 3.25 | * |
| 31⁄2 | 9.00 | 1.38 | 5.50 | 8 | 1.00 | 7.25 | 4.07 | 5.25 | 4.00 | 1.94 | 3.38 | * |
| 4 | 10.00 | 1.38 | 6.19 | 8 | 1.00 | 7.88 | 4.57 | 5.75 | 4.50 | 2.00 | 3.50 | * |
| 5 | 11.00 | 1.50 | 7.31 | 8 | 1.00 | 9.25 | 5.66 | 7.00 | 5.56 | 2.12 | 4.00 | * |
| 6 | 12.50 | 1.62 | 8.50 | 12 | 1.00 | 10.62 | 6.72 | 8.12 | 6.63 | 2.25 | 4.06 | * |
| 8 | 15.00 | 1.88 | 10.62 | 12 | 1.12 | 13.00 | 8.72 | 10.25 | 8.63 | 2.69 | 4.62 | * |
| 10 | 17.50 | 2.12 | 12.75 | 16 | 1.25 | 15.25 | 10.88 | 12.62 | 10.75 | 2.88 | 4.88 | * |
| 12 | 20.50 | 2.25 | 15.00 | 16 | 1.38 | 17.75 | 12.88 | 14.75 | 12.75 | 3.12 | 5.38 | * |
| 14 | 23.00 | 2.38 | 16.25 | 20 | 1.38 | 20.25 | 14.14 | 16.75 | 14.00 | 3.31 | 5.88 | * |
| 16 | 25.50 | 2.50 | 18.50 | 20 | 1.50 | 22.50 | 16.16 | 19.00 | 16.00 | 3.69 | 6.00 | * |
| 18 | 28.00 | 2.62 | 21.00 | 24 | 1.50 | 24.75 | 18.18 | 21.00 | 18.00 | 3.88 | 6.50 | * |
| 20 | 30.50 | 2.75 | 23.12 | 24 | 1.62 | 27.00 | 20.20 | 23.12 | 20.00 | 4.00 | 6.62 | * |
| 22 | 33.00 | 2.88 | 25.25 | 24 | 1.75 | 29.25 | 22.22 | 25.25 | 22.00 | 4.25 | 6.75 | * |
| 24 | 36.00 | 3.00 | 27.25 | 24 | 1.88 | 32.00 | 24.25 | 27.62 | 24.00 | 4.50 | 6.88 | * |
| 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) | Dia. Hub Base (HB) | Dia. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) | * WN Bore ID (WB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 3.75 | 0.56 | 1.38 | 4 | 0.63 | 2.62 | 0.88 | 1.50 | 0.84 | 0.88 | 2.06 | * |
| 3⁄4 | 4.62 | 0.62 | 1.69 | 4 | 0.75 | 3.25 | 1.09 | 1.88 | 1.05 | 1.00 | 2.25 | * |
| 1 | 4.88 | 0.69 | 2.00 | 4 | 0.75 | 3.50 | 1.36 | 2.12 | 1.32 | 1.06 | 2.44 | * |
| 11⁄4 | 5.25 | 0.81 | 2.50 | 4 | 0.75 | 3.88 | 1.70 | 2.50 | 1.66 | 1.12 | 2.62 | * |
| 11⁄2 | 6.12 | 0.88 | 2.88 | 4 | 0.88 | 4.50 | 1.95 | 2.75 | 1.90 | 1.25 | 2.75 | * |
| 2 | 6.50 | 1.00 | 3.62 | 8 | 0.75 | 5.00 | 2.44 | 3.31 | 2.38 | 1.44 | 2.88 | * |
| 21⁄2 | 7.50 | 1.12 | 4.12 | 8 | 0.88 | 5.88 | 2.94 | 3.94 | 2.88 | 1.62 | 3.12 | * |
| 3 | 8.25 | 1.25 | 5.00 | 8 | 0.88 | 6.62 | 3.57 | 4.62 | 3.50 | 1.81 | 3.25 | * |
| 31⁄2 | 9.00 | 1.38 | 5.50 | 8 | 1.00 | 7.25 | 4.07 | 5.25 | 4.00 | 1.94 | 3.38 | * |
| 4 | 10.75 | 1.50 | 6.19 | 8 | 1.00 | 8.50 | 4.57 | 6.00 | 4.50 | 2.12 | 4.00 | * |
| 5 | 13.00 | 1.75 | 7.31 | 8 | 1.12 | 10.50 | 5.66 | 7.44 | 5.56 | 2.38 | 4.50 | * |
| 6 | 14.00 | 1.88 | 8.50 | 12 | 1.12 | 11.50 | 6.72 | 8.75 | 6.63 | 2.62 | 4.62 | * |
| 8 | 16.50 | 2.19 | 10.62 | 12 | 1.25 | 13.75 | 8.72 | 10.75 | 8.63 | 3.00 | 5.25 | * |
| 10 | 20.00 | 2.50 | 12.75 | 16 | 1.38 | 17.00 | 10.88 | 13.50 | 10.75 | 3.38 | 6.00 | * |
| 12 | 22.00 | 2.62 | 15.00 | 20 | 1.38 | 19.25 | 12.88 | 15.75 | 12.75 | 3.62 | 6.12 | * |
| 14 | 23.75 | 2.75 | 16.25 | 20 | 1.50 | 20.75 | 14.14 | 17.00 | 14.00 | 3.69 | 6.50 | * |
| 16 | 27.00 | 3.00 | 18.50 | 20 | 1.63 | 23.75 | 16.16 | 19.50 | 16.00 | 4.19 | 7.00 | * |
| 18 | 29.25 | 3.25 | 21.00 | 20 | 1.75 | 25.75 | 18.18 | 21.50 | 18.00 | 4.62 | 7.25 | * |
| 20 | 32.00 | 3.50 | 23.00 | 24 | 1.75 | 28.50 | 20.20 | 24.00 | 20.00 | 5.00 | 7.50 | * |
| 22 | 34.25 | 3.75 | 25.25 | 24 | 1.88 | 30.63 | 22.22 | 26.25 | 22.00 | 5.25 | 7.75 | * |
| 24 | 37.00 | 4.00 | 27.25 | 24 | 2.00 | 33.00 | 24.25 | 28.25 | 24.00 | 5.50 | 8.00 | * |
| 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. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 9.50 | 1.50 | 5.00 | 8 | 1.00 | 7.50 | 3.57 | * | 5.00 | 3.50 | 2.12 | 4.00 |
| 4 | 11.50 | 1.75 | 6.19 | 8 | 1.25 | 9.25 | 4.57 | * | 6.25 | 4.50 | 2.75 | 4.50 |
| 5 | 13.75 | 2.00 | 7.31 | 8 | 1.38 | 11.00 | 5.66 | * | 7.50 | 5.56 | 3.12 | 5.00 |
| 6 | 15.00 | 2.19 | 8.50 | 12 | 1.25 | 12.50 | 6.72 | * | 9.25 | 6.63 | 3.38 | 5.50 |
| 8 | 18.50 | 2.50 | 10.63 | 12 | 1.50 | 15.50 | 8.72 | * | 11.75 | 8.63 | 4.00 | 6.38 |
| 10 | 21.50 | 2.75 | 12.75 | 16 | 1.50 | 18.50 | 10.88 | * | 14.50 | 10.75 | 4.25 | 7.25 |
| 12 | 24.00 | 3.12 | 15.00 | 20 | 1.50 | 21.00 | 12.88 | * | 16.50 | 12.75 | 4.63 | 7.88 |
| 14 | 25.25 | 3.38 | 16.25 | 20 | 1.63 | 22.00 | 14.14 | * | 17.75 | 14.00 | 5.12 | 8.38 |
| 16 | 27.75 | 3.50 | 18.50 | 20 | 1.75 | 24.25 | 16.16 | * | 20.00 | 16.00 | 5.25 | 8.50 |
| 18 | 31.00 | 4.00 | 21.00 | 20 | 2.00 | 27.00 | 18.18 | * | 22.25 | 18.00 | 6.00 | 9.00 |
| 20 | 33.75 | 4.25 | 23.00 | 20 | 2.13 | 29.50 | 20.20 | * | 24.50 | 20.00 | 6.25 | 9.75 |
| 24 | 41.00 | 5.50 | 27.25 | 20 | 2.63 | 35.50 | 24.25 | * | 29.50 | 24.00 | 8.00 | 11.50 |
| 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) | Dia. Hub Base (HB) | Dia. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) | * WN Bore ID (WB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 4.75 | 0.88 | 1.38 | 4 | 0.88 | 3.25 | 0.88 | 1.50 | 0.84 | 1.25 | 2.38 | * |
| 3⁄4 | 5.12 | 1.00 | 1.69 | 4 | 0.88 | 3.50 | 1.09 | 1.75 | 1.05 | 1.38 | 2.75 | * |
| 1 | 5.88 | 1.12 | 2.00 | 4 | 1.00 | 4.00 | 1.36 | 2.06 | 1.32 | 1.62 | 2.88 | * |
| 11⁄4 | 6.25 | 1.12 | 2.50 | 4 | 1.00 | 4.38 | 1.70 | 2.50 | 1.66 | 1.62 | 2.88 | * |
| 11⁄2 | 7.00 | 1.25 | 2.88 | 4 | 1.12 | 4.88 | 1.95 | 2.75 | 1.90 | 1.75 | 3.25 | * |
| 2 | 8.50 | 1.50 | 3.63 | 8 | 1.00 | 6.50 | 2.44 | 4.12 | 2.38 | 2.25 | 4.00 | * |
| 21⁄2 | 9.62 | 1.62 | 4.13 | 8 | 1.12 | 7.50 | 2.94 | 4.88 | 2.88 | 2.50 | 4.12 | * |
| 3 | 10.50 | 1.88 | 5.00 | 8 | 1.25 | 8.00 | – | 5.25 | 3.50 | – | 4.62 | * |
| 4 | 12.25 | 2.12 | 6.19 | 8 | 1.38 | 9.50 | – | 6.38 | 4.50 | – | 4.88 | * |
| 5 | 14.75 | 2.88 | 7.31 | 8 | 1.63 | 11.50 | – | 7.75 | 5.56 | – | 6.12 | * |
| 6 | 15.50 | 3.25 | 8.50 | 12 | 1.50 | 12.50 | – | 9.00 | 6.63 | – | 6.75 | * |
| 8 | 19.00 | 3.62 | 10.63 | 12 | 1.75 | 15.50 | – | 11.50 | 8.63 | – | 8.38 | * |
| 10 | 23.00 | 4.25 | 12.75 | 12 | 2.00 | 19.00 | – | 14.50 | 10.75 | – | 10.00 | * |
| 12 | 26.50 | 4.88 | 15.00 | 16 | 2.12 | 22.50 | – | 17.75 | 12.75 | – | 11.12 | * |
| 14 | 29.50 | 5.25 | 16.25 | 16 | 2.38 | 25.00 | – | 19.50 | 14.00 | – | 11.75 | * |
| 16 | 32.50 | 5.75 | 18.50 | 16 | 2.63 | 27.75 | – | 21.75 | 16.00 | – | 12.25 | * |
| 18 | 36.00 | 6.38 | 21.00 | 16 | 2.88 | 30.50 | – | 23.50 | 18.00 | – | 12.88 | * |
| 20 | 38.75 | 7.00 | 23.00 | 16 | 3.12 | 32.75 | – | 25.25 | 20.00 | – | 14.00 | * |
| 24 | 46.00 | 8.00 | 27.25 | 16 | 3.63 | 39.00 | – | 30.00 | 24.00 | – | 16.00 | * |
| Nominal Size | Outside Diameter (OD) | Min. Thickness (T) | RF Dia. (R) | No. of Bolt Holes | Diameter of Holes | Bolt Circle (BC) | Dia. Hub Base (HB) | Dia. Hub Top (HT) | SO LTH (SL) | WN LTH (WL) | * WN Bore ID (WB) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 5.25 | 1.19 | 1.38 | 4 | 0.88 | 3.50 | 1.69 | 0.84 | 1.56 | 2.88 | * |
| 3⁄4 | 5.50 | 1.25 | 1.69 | 4 | 0.88 | 3.75 | 2.00 | 1.05 | 1.69 | 3.12 | * |
| 1 | 6.25 | 1.38 | 2.00 | 4 | 1.00 | 4.25 | 2.25 | 1.32 | 1.88 | 3.50 | * |
| 11⁄4 | 7.25 | 1.50 | 2.50 | 4 | 1.12 | 5.13 | 2.88 | 1.66 | 2.06 | 3.75 | * |
| 11⁄2 | 8.00 | 1.75 | 2.88 | 4 | 1.25 | 5.75 | 3.12 | 1.90 | 2.38 | 4.38 | * |
| 2 | 9.25 | 2.00 | 3.63 | 8 | 1.12 | 6.75 | 3.75 | 2.38 | 2.75 | 5.00 | * |
| 21⁄2 | 10.50 | 2.25 | 4.13 | 8 | 1.25 | 7.75 | 4.50 | 2.88 | 3.12 | 5.62 | * |
| 3 | 12.00 | 2.62 | 5.00 | 8 | 1.38 | 9.00 | 5.25 | 3.50 | – | 6.62 | * |
| 4 | 14.00 | 3.00 | 6.19 | 8 | 1.63 | 10.75 | 6.50 | 4.50 | – | 7.50 | * |
| 5 | 16.50 | 3.62 | 7.31 | 8 | 1.88 | 12.75 | 8.00 | 5.56 | – | 9.00 | * |
| 6 | 19.00 | 4.25 | 8.50 | 8 | 2.12 | 14.50 | 9.25 | 6.63 | – | 10.75 | * |
| 8 | 21.75 | 5.00 | 10.63 | 12 | 2.12 | 17.25 | 12.00 | 8.63 | – | 12.50 | * |
| 10 | 26.50 | 6.50 | 12.75 | 12 | 2.63 | 21.25 | 14.75 | 10.75 | – | 16.50 | * |
| 12 | 30.00 | 7.25 | 15.00 | 12 | 2.88 | 24.38 | 17.38 | 12.75 | – | 18.25 | * |
| Temperature | ||||||||
| FLANGE TABLE | -10°C to 200°C |
250°C |
300°C |
350°C |
400°C |
425°C |
450°C |
475°C |
|
6 |
6 |
5.5 |
5 |
– |
– |
– |
– |
– |
|
10 |
10 |
9 |
8 |
7 |
6 |
– |
– |
– |
|
16 |
16 |
15 |
13 |
11 |
9 |
– |
– |
– |
|
25 |
25 |
24 |
21 |
17 |
14 |
12 |
9 |
6 |
|
40 |
40 |
38 |
33 |
28 |
23 |
20 |
15 |
10 |
|
64 |
64 |
61 |
53 |
44 |
36 |
32 |
24 |
16 |
|
100 |
100 |
95 |
83 |
70 |
57 |
50 |
37 |
25 |
|
160 |
160 |
152 |
132 |
112 |
92 |
80 |
60 |
40 |
| NPS (Inches) |
DN (mm) |
FLANGE OD A MM |
FLANGE THICKNESS D MM |
SLIP ON FLANGE WEIGHT (KGS) | WELD NECK FLANGE WEIGHT (KGS) | BLIND FLANGE WEIGHT (KGS) |
| 1/ 2 | 15 | 88.9 | 11.2 | 0.4 | 0.5 | 0.4 |
| 3/ 4 | 20 | 98.6 | 12.7 | 0.6 | 0.7 | 0.6 |
| 1 | 25 | 108 | 14.2 | 0.8 | 1 | 0.9 |
| 1 1/ 4 | 32 | 117.3 | 15.7 | 1 | 1.3 | 1.2 |
| 1 1/ 2 | 40 | 127 | 17.5 | 1.3 | 1.7 | 1.5 |
| 2 | 50 | 152.4 | 19.1 | 2.1 | 2.6 | 2.4 |
| 2 1/ 2 | 65 | 177.8 | 22.4 | 3.3 | 4.1 | 3.9 |
| 3 | 80 | 190.5 | 23.9 | 3.9 | 4.9 | 4.9 |
| 3 1/ 2 | 90 | 215.9 | 23.9 | 4.8 | 6.1 | 6.2 |
| 4 | 100 | 228.6 | 23.9 | 5.3 | 6.8 | 7.0 |
| 5 | 125 | 254 | 23.9 | 6.1 | 8.6 | 8.6 |
| 6 | 150 | 279.4 | 25.4 | 7.5 | 10.6 | 11.3 |
| 8 | 200 | 342.9 | 28.4 | 12.1 | 17.6 | 19.6 |
| 10 | 250 | 406.4 | 30.2 | 16.5 | 24 | 28.6 |
| 12 | 300 | 482.6 | 31.8 | 26.2 | 36.5 | 43.2 |
| 14 | 350 | 533.4 | 35.1 | 34.6 | 48.4 | 58.1 |
| 16 | 400 | 596.9 | 36.6 | 44.8 | 60.6 | 76.1 |
| 18 | 450 | 635 | 39.6 | 48.9 | 68.3 | 93.7 |
| 20 | 500 | 698.5 | 42.9 | 61.9 | 84.5 | 122.0 |
| 24 | 600 | 812.8 | 47.8 | 86.9 | 115 | 185.0 |