Uday Flanges stands out as a leading manufacturer and supplier of ANSI B16.5 Class 900 flanges, proudly based inDubai, UAE. Our flanges are meticulously crafted to comply with the rigorous standards of the ASME/ANSI B16.5, specifically designed for Class 900 pressure-rated systems. Built to handle high-pressure and high-temperature conditions, these flanges come in a range of materials and face types, including raised face (RF) and ring-type joint (RTJ). With a solid reputation for quality, precision, and prompt delivery, Uday Flanges caters to industries like oil & gas, petrochemical, power generation, and marine, providing dependable, high-performance flange solutions.
ANSI B16.5 Class 900 flanges are generally made from materials such as carbon steel (ASTM A105), stainless steel (SS304/SS316), and alloy steel (ASTM A182 F11/F22). Their chemical makeup includes elements like carbon, manganese, chromium, nickel, and molybdenum, which enhance their strength and resistance to corrosion. These flanges can handle pressures of up to around 2,250 psi at 100°F, depending on the material used. In terms of mechanical properties, they boast tensile strengths ranging from 485 to 750 MPa and yield strengths from 250 to 600 MPa. Their sturdy design guarantees reliable sealing in high-pressure piping systems.
| Size Range | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
|---|---|
| Standards | B16.47 Series A & B, ANSI/ASME B16.5, BS4504, B16.48, EN-1092, BS 10, DIN, ANSI Flanges, BS Flanges, ASME Flanges, EN Flanges, DIN Flanges, GOST Flanges. |
| 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 |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Main Types | Threaded / Forged / Plate /Screwed |
| Flange supporting material | Ring Joint, Gasket, Flange Bolts |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Most Common Types |
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| Production technique |
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| Connect Type/ Flange Face Type | Ring Type Joint (RTJ), Raised Face (RF),Large Male-Female (LMF), Flat Face (FF),Small Male-Female (SMF), Lap-Joint Face (LJF), Large Tongue & Groove, Small Tongue, Groove |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations Class 900 Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Specialized Manufacturer of |
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| Standard | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
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
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| Normal pipe size | Outside dia. of flange | Minimum thickness of flange | Overall Length | Bolt Circle | No. and Size of Holes | O.D. of raised face | |||
| Welding neck | Slip-on & socket welding | Lap Joint | |||||||
| O | Q | Y | Diam. | No. | dia. | R | |||
| 1/2 | 95 | 14.3 | 52.4 | 22.2 | 22.2 | 66.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.5 | 4 | 19 | 43 |
| 1 | 124 | 17.5 | 61.9 | 27.0 | 27.0 | 89.0 | 4 | 19 | 51 |
| 1-1/4 | 133 | 20.7 | 66.7 | 28.6 | 28.6 | 98.5 | 4 | 19 | 64 |
| 1-1/2 | 156 | 22.3 | 69.8 | 31.8 | 31.8 | 114.5 | 4 | 22 | 73 |
| 2 | 165 | 25.4 | 73.0 | 36.5 | 36.5 | 127.0 | 8 | 19 | 92 |
| 2-1/2 | 190 | 28.6 | 79.4 | 41.3 | 41.3 | 149.0 | 8 | 22 | 105 |
| 3 | 210 | 31.8 | 82.6 | 46.0 | 46.0 | 168.0 | 8 | 22 | 127 |
| 3-1/2 | 229 | 35.0 | 85.7 | 49.2 | 49.2 | 184.0 | 8 | 25 | 140 |
| 4 | 273 | 38.1 | 101.6 | 54.0 | 54.0 | 216.0 | 8 | 25 | 157 |
| 5 | 330 | 44.5 | 114.3 | 60.3 | 60.3 | 266.5 | 8 | 29 | 186 |
| 6 | 356 | 47.7 | 117.5 | 66.7 | 66.7 | 292.0 | 12 | 29 | 216 |
| 8 | 419 | 55.6 | 133.4 | 76.2 | 76.2 | 349.0 | 12 | 32 | 270 |
| 10 | 508 | 63.5 | 152.4 | 85.7 | 115.1 | 432.0 | 16 | 85 | 324 |
| 12 | 559 | 66.7 | 155.6 | 92.1 | 111.1 | 489.0 | 20 | 35 | 381 |
| 14 | 603 | 69.9 | 165.1 | 93.7 | 117.5 | 527.0 | 20 | 38 | 413 |
| 16 | 686 | 76.2 | 177.8 | 106.4 | 127.0 | 603.0 | 20 | 41 | 470 |
| 18 | 743 | 82.6 | 184.2 | 117.6 | 139.7 | 654.0 | 20 | 45 | 533 |
| 20 | 813 | 88.9 | 190.5 | 127.0 | 165.1 | 724.0 | 24 | 45 | 584 |
| 24 | 940 | 101.6 | 203.2 | 139.7 | 184.2 | 838.0 | 24 | 51 | 692 |
ANSI B16.5 Class 900 flanges find extensive use in high-pressure piping systems across various sectors, including oil & gas, chemical processing, power plants, refineries, and marine engineering. These flanges ensure secure, leak-proof connections for pipes, valves, and equipment that operate under elevated pressures and temperatures. Typical applications include steam lines, high-pressure fluid transfer, offshore platforms, and pressure vessels. Class 900 flanges come in different types, such as weld neck, slip-on, blind, and threaded configurations. Their compatibility with ANSI/ASME standards guarantees easy interchangeability and integration.
Yes, we offer custom sizes for ANSI B16.5 Class 900 Flanges to meet specific project needs. Our team at Uday Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@udayflanges.ae.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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