A flange is a method used to connect pipes, valves, and other equipment in a piping system. The ASME B16.5 Flange is restricted to flanged fittings, which are made from forged materials or cast. The dimension of a flange depends on the pipe and the pressures its walls can withstand. A Carbon Steel Flange is made up of high amounts of carbon. After treating it with heat, the carbon flange will become stronger, harder, and will increase weldability. We are one of the top ASME B36.19 Flange manufacturers in India who focus on creating high-quality products at the most reasonable prices.
The Stainless Steel Class 300 Flange is made up of more metal as compared to other grades. As a result of this, the 300 flanges can withstand greater pressures. The stainless steel used in this construction makes it resistant to corrosion and extreme temperatures. The ASME B16 5 Class 600 Flange on, the other hand, is fitted either by welding or screwing it. These flanges depend on the material, which is used to prepare them and will differ in properties.
We use the best raw material while preparing ASME B16.5 Flange Material using innovative technology following international and local standards. Flanges have a lot of applications in many categories. The B16.5 Industrial Pipe Flange is widely used in chemical, petroleum, paper, and pulp, and different piping systems to transport fluids and gases. We can also customize all our ASME B16.5 Flanges as per your requirements. If you have any questions regarding our flanges, contact us to know more.
| Size Chart | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
|---|---|
| JIS | 16 K, 5K, 10 K, 30 K, 20 K, 40 K, 63 K |
| UNI / DIN | 10Bar 6Bar 25Bar 16Bar 40Bar |
| Pressure Rating ANSI | 2500 LBS, 600 LBS, 150 LBS, 900 LBS, 300 LBS, 1500 LBS |
| Production technique | Heat treated, Forged and machined |
| Connect Type/ Flange Face Type | Large Tongue & Groove, Small Tongue, Small Male-Female (SMF), Flat Face (FF), Lap-Joint Face (LJF), Ring Type Joint (RTJ), Raised Face (RF), Large Male-Female (LMF), Groove |
| Coating | Oil Black Paint, Anti-rust Paint, Cold and Hot Dip Galvanized, Zinc Plated, Yellow Transparent |
| Most common types | Forged / Threaded / Screwed / Plate |
| Export to | Ireland, Brazil, Thailand, Egypt, Oman, Dubai, Singapore, Indonesia, Ukraine, Korea, Iran, India, Saudi Arabia, Spain, Canada, USA, Peru, etc |
| Test | X-ray detector, UI trasonic flaw detector, Direct-reading Spectrograph, Magnetic particle detector, Hydrostatic testing machine |
| Equipment | Pushing Machine, electric bevelling machine, Press machine, Bending machine, Sand-blasting machine etc |
| Origin | West Europe / Indian / USA / Japan / Korean |
| Standards | ASME, BS, API605, GOST, JISB2220, ANSI/ASME B16.5, ISO70051, API7S-15, API7S-43, BS 10, B16.47 Series A & B, B16.48, DIN, EN, BS1560-3.1, BS4504, MSS S44, EN-1092, ASME/ANSI B16.5/16.36/16.47A/16.47B, DIN, ANSI, EN1092 |
| Special design |
As per your drawing AS, ANSI, BS, DIN and JIS |
| ASME B16.5 Flange Price in India | ANSI B16.5 Flange Price in INR | ASME B16.5 Flange Price in USD | ASME B16.5 Class 300 Flange Price in UAE Dirham |
| 1.1/2NB 300LB SCH XS WELD NECK FLANGE ASTM/ASME SA 105N ASME B16.5 | Rs. 2,332 | 31.12 USD | UAE Dirham 114.32 |
| FLANGE 1/2 300 SCH 160 WNRF A105N ASME B16.5 | Rs. 830 | 11.08 USD | UAE Dirham 40.69 |

| 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 | 1.50 | 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 | * |
| 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 |
| DN (in.) | Dimension | ANSI B16.5 Flange Dimensional 1/2 to 2 1/2 in. Size Chart | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 125# 150# | 300# | 400# | 600# | 900# | 1500# | 2500# | ||||||||||
| in. | millimeter | in. | millimeter | in. | millimeter | in. | millimeter | in. | millimeter | in. | millimeter | in. | millimeter | |||
| 1/2 | A | 3 1/2 | 88.9 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 4 3/4 | 121 | 4 3/4 | 121 | 5 1/4 | 133.4 | |
| b | 7/16 | 11.1 | 9/16 | 14.3 | 9/16 | 14.3 | 9/16 | 14.3 | 7/8 | 22.2 | 7/8 | 22.2 | 1 3/16 | 30.2 | ||
| D2 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | ||
| D1 | 2 3/8 | 60.3 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 3 1/4 | 82.6 | 3 1/4 | 82.6 | 3 1/2 | 88.9 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
| d | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
| 3/4 | A | 3 7/8 | 98.4 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 5 1/8 | 130 | 5 1/8 | 130 | 5 1/2 | 139.7 | |
| b | 1/2 | 12.7 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | 1 1/4 | 31.8 | ||
| D2 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | ||
| D1 | 2 3/4 | 69.8 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 3/4 | 95.2 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
| 1 | A | 4 1/4 | 108 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 6 1/4 | 159 | |
| b | 9/16 | 14.3 | 11/16 | 17.5 | 11/16 | 17.5 | 11/16 | 17.5 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 3/8 | 34.9 | ||
| D2 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | ||
| D1 | 3 1/8 | 79.4 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 4 | 102 | 4 | 102 | 4 1/4 | 108 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 | 25.4 | ||
| 1 1/4 | A | 4 5/8 | 117.5 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 6 1/4 | 159 | 6 1/4 | 159 | 7 1/4 | 184.2 | |
| b | 5/8 | 15.9 | 3/4 | 19 | 13/16 | 20.6 | 13/16 | 20.6 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/2 | 38.1 | ||
| D2 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | ||
| D1 | 3 1/2 | 88.9 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 4 3/8 | 111 | 4 3/8 | 111 | 5 1/8 | 130 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
| 1 1/2 | A | 5 | 127 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 7 | 177.8 | 7 | 177.8 | 8 | 203 | |
| b | 11/16 | 17.5 | 13/16 | 20.6 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/4 | 31.8 | 1 1/4 | 31.8 | 1 3/4 | 44.5 | ||
| D2 | 2 7/8 | 73 98 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | ||
| D1 | 3 7/8 | 4 | 4 1/2 | 114 | 4 1/2 | 114 | 4 1/2 | 114 | 4 7/8 | 124 | 4 7/8 | 124 | 5 3/4 | 146 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | . 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | ||
| 2 | A | 6 | 152.4 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 9 1/4 | 234.9 | |
| b | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | 1 1/2 | 38.1 | 1 1/2 | 38.1 | 2 | 50.8 | ||
| D2 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | ||
| D1 | 4 3/4 | 121 | 5 | 127 | 5 | 127 | 5 | 127 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 3/4 | 171 | ||
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
| 2 1/2 | A | 7 | 177.8 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 9 5/8 | 244 | 9 5/8 | 244 | 10 1/2 | 266.7 | |
| b | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 5/8 | 41.3 | 1 5/8 | 41.3 | 2 1/4 | 57.2 | ||
| D2 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 105 | 4 1/8 | 105 | 4 1/8 | 105 | ||
| D1 | 5 1/2 | 139.7 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 3/4 | 197 | ||
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | ||
ASME B16.5 standard covers Pipe Flanges and Flanged Fittings from NPS 1/2 through NPS 24 Metric/Inch in pressure class 150 to class 2500 While ASME B16.47 Standard is for large diameter steel pipe flanges sized from NPS 26 through NPS 60. ASME B16.47 incorporate MSS SP-44: Steel Pipeline Flanges and API 605: Large Diameter Carbon Steel Flanges.
| DIMENSIONAL TOLERANCES ■ ASME B16.5 | ||||
| WELDING NECK FLANGES | ||||
| 0 | Outside Diameter | When 0 is 24″ or less | ±0.06″ | ±1.6 mm |
| When O is over 24” | ±0.12″ | ±3.2 mm | ||
| R | Diameter of Contact Face | 0.06” (1.6 mm) raised face | ±0.03″ | ±0.8 mm |
| 0.25″ (6.4 mm) raised face | ±0.02″ | ±0.5 mm | ||
| A | Diameter of Hub at Point of Welding | NPS 5 and smaller | +0.09″, -0.03″ | +2.4 mm, -0.8 mm |
| NPS 6 and larger | +0.16″, -0.03″ | +4.0 mm, -0.8 mm | ||
| B | Inside Diameter | NPS 10 and smaller | ±0.03″ | ±0.8 mm |
| NPS 12 to 18, inclusive | ±0.06″ | ±1.6 mm | ||
| NPS 20 and larger | +0.12″, -0.06” | +3.2 mm, -1.6 mm | ||
| X | Diameter of Hub at Base | When Hub Base is 24″ or less | ±0.06″ | ±1.6 mm |
| When Hub Base is over 24″ | ±0.12″ | ±3.2 mm | ||
| c | Thickness | NPS 18 and smaller | +0.12″, -0.00″ | +3.2 mm, -0.0 mm |
| NPS 20 and larger | +0.19″, -0.00″ | +4.8 mm, -0.0 mm | ||
| Drilling | Bolt Circle Diameter | ±0.06″ | ±1.6 mm | |
| Bolt Hole Spacing | ±0.03″ | ±0.8 mm | ||
| Eccentricity of Bolt Circle and Facing with Respect to Bore | NPS 21/2 and smaller | ±0.03″ | ±0.8 mm | |
| NPS 3 and larger | ±0.06″ | ±1.6 mm | ||
| Length Through Hub | NPS 10 and smaller | ±0.06″ | ±1.6 mm | |
| NPS 12 and larger | ±0.12″ | ±3.2 mm | ||
| SLIP-ON, LAP JOINT, SOCKET WELDING, THREADED and BLIND FLANGES | ||||
| O | Outside Diameter | When O is 24″ or less When O is over 24″ |
±0.06″ ±0.12″ | ±1.6 mm ±3.2 mm |
| R | Diameter of Contact Face | 0.06″ (1.6 mm) raised face 0.25″ (6.4 mm) raised face | ±0.03″ ±0.02″ | ±0.8 mm ±0.5 mm |
| B | Inside Diameter at Face of Socket Welding Flanges
Inside Diameter of Slip-On, Lap Joint, and Socket Welding |
NPS 10 and smaller NPS 12 through 18, inclusive NPS 20 and larger |
±0.03″ ±0.06″ +0.12″, -0.06″ | ±0.8 mm ±1.6 mm +3.2 mm, -1.6 mm |
| NPS 10 and smaller NPS 12 and larger |
+0.03″, -0.00″ +0.06″, -0.00″ | +0.8 mm, -0.0 +1.6 mm, -0.0 mm |
||
| Q | Counterbore, Threaded Flanges | NPS 10 and smaller NPS 12 and larger |
+0.03″, -0.00″ +0.06″, -0.00″ | +0.8 mm, -0.0 + 1.6 mm, -0.0 mm |
| X | Diameter of Hub at Base | NPS 12 and smaller NPS 14 and larger |
+0.09″, -0.06″ ±0.12″ | +2.4 mm, -1.6 ±3.2 mm |
| c | Thickness | NPS 18 and smaller NPS 20 and larger |
+0.12″, -0.00″ +0.19″, -0.00″ | +3.2 mm, -0.0 +4.8 mm, -0.0 mm |
| Drilling | Bolt Circle Diameter Bolt Hole Spacing | ±0.06″ ±0.03″ | ±1.6 mm ±0.8 mm |
|
| Eccentricity of Bolt Circle and Facing with Respect to Bore | NPS 2V2 and smaller NPS 3 and larger |
±0.03″ ±0.06″ | ±0.8 mm ±1.6 mm |
|
| Overall Length Through Hub | NPS 18 and smaller NPS 20 and larger |
+0.12”, -0.03” +0.19”, -0.03” |
+3.2 mm, -0.8 mm +4.8 mm, -1.6 mm |
|
| ASME B16.5 SCH40 Weld Neck Flange | Malaysia, Taiwan, Los Alamos -Mexico, Philippines |
| ASME B16.5 Class 150 Pipe Flange 1/2" - 96" | Sweden, Colombia, Malaysia, China |
| ansi b16.5 blind rf ff rtj flange class 150 to 2500 | United Kingdom -UK, Europe, Malaysia, UAE |
| ASME B16.5 Welding Neck WN Flange, Class 900 | Netherlands, Malaysia, Russia, Dubai |
| ANSI B16.5 150LBS Weld Neck carbon steel pipe flanges | United Arab Emirates (UAE), Turkey, Norway, Malaysia |
| Flange 304L 1' SW RF ASME B16.5 | UK, Canada, Poland, Ellington -United States |
| 3/4'' 300lbs Ansi B16.5 Flange | Bahrain, South Africa, Singapore, Singapore |
| ANSI b16.5 galvanized flange | South Africa, Saudi Arabia (KSA), Kuwait, Brazil |
| DUPLEX 2205 ASME B16.5 1/2" - 24" 150# BLIND FLANGE | Philippines, Malaysia, Canada, Singapore |
| ANSI B16.5 grade2 150# press class titanium blind flange | Singapore, South Korea, NY 12203 (USA), Malaysia |
| Class 150 ASME B16.5 Forged Flange | Philippines, France, Australia, UK, Nigeria |
| Flange 24" Class900 SCH100 ASTM A350-LF2 cl 1 ASME B16.5 | Malaysia, USA, Bangladesh, Finland |
| ASME B16.5 Class 1500 High Pressure Threaded Flange | Europe, Japan, Romania, Malaysia |
| ASME B16. 5 A105 Welded 3" CL 600 RF WN flange | Dammam -KSA, Indonesia, Philippines, Belgium |
| ANSI B16.5 CL150 Brass Bronze Forged Flanges | Chile, Italy, Iran, Singapore |
| Asme B16.5 150# Sorf Stainless Steel Flange | Oman, Malaysia, Hong Kong, UAE |
| ANSI B16.5 4" WT.XS 600# WNRF | Egypt, Spain, Mexico, UK |
| Asme B16.5 PN 6 Forged Rtj Face Blind Flange | Qatar, France, Europe, Thailand |
| B16.5 Incoloy 925 Blind flange | Czechia, Germany, Thailand, Malaysia |