Super Duplex Flanges
The super duplex flange material is one of several “super duplex” grades that combine high strength with great corrosion resistance.
The Super Duplex 2507 flanges, like other duplex (ferritic/austenitic) grades, are not appropriate for high or low temperature service.
Super Duplex flanges are used to join pipes, valves, pumps, and other pieces of equipment to construct a pipeline system.
Super duplex steel flanges provide for simple cleaning, inspection, and customisation. It is frequently welded or bolted together. It is made up of three parts: the pipe flange, the blotting, and the gasket. Its joints are formed by bolting two flanges together with a gasket between them to provide a seal. It may be heated to 1040 – 1120°C and quickly cooled in air or with water. A182 Super Duplex Flange is commonly welded or threaded. It gives flexibility to piping systems while retaining them by allowing for quicker disassembly and increased access to system components.
Super Duplex Stainless Steel Flanges have good high temperature oxidation resistance, but like other duplex stainless steels, they suffer from embrittlement if stored at temperatures exceeding 300°C for even short periods of time. Because of its poor hot strength, it may require assistance during heat treatment or forging. Solution treatment should be performed after hot forging.
Super Duplex Pipe Flanges come in a variety of shapes and sizes, including super duplex socket weld flanges, super duplex lap joint flanges, super duplex slide on flanges, super duplex blind flanges, super duplex threaded flanges, and super duplex screwed flanges.
Super Duplex flanges Specification Chart
| Size Chart | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
| Standards | API7S-15, API7S-43, API605, ANSI/ASME B16.5, B16.47 Series A & B, B16.48, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, EN1092 |
| JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Pressure Rating ANSI | 600 LBS, 900 LBS, 150 LBS, 2500 LBS, 300 LBS, 1500 LBS |
| Pressure Calculation in DIN | 16Bar 6Bar 25Bar 40Bar 10Bar / PN10 PN16 PN6 PN25 PN64 PN40 |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Anti-rust Paint, Zinc Plated,Oil Black Paint, Cold and Hot Dip Galvanized, Yellow Transparent |
| Production technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Raised Face (RF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Equipment | Bending machine, Pushing Machine,Press machine, electric bevelling machine, Sand-blasting machine etc |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Special design | As per your drawing |
| AS, ANSI, BS, DIN and JIS | |
| 15 NB (1/2") to 200 NB (8") | |
| Equal and Reducing Configurations | |
| Test | Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector |
| Most common types | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B |
| Raw Materials Certificate | |
| 100% Radiography Test Report | |
| Third Party Inspection Report, etc | |
| Manufacturer of | 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 | |
| B.S: BS4504 , BS3293, BS1560, BS10 | |
| German (DIN) | |
| AS 2129: Table D; Table E; Table H | |
| ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 | |
| ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 | |
| American standard (ANSI) | |
| British standard (BS) | |
| ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings | |
| DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 | |
| The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276 | |
| Uses & application | Nuclear power (mostly seamless). |
| Bitumen upgraders. | |
| Petrochemicals and acids. | |
| Heavy oil refineries. | |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
A182 Super Duplex Flange Composition Chart
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
Mechanical Properties of Super Duplex Steel Flanges Chart
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S32750 | 7.8 | 0.281 | 1350 | 2460 |
