Vishal Flanges is a trusted manufacturer and supplier of Super Duplex Steel Spectacle Flanges, located in Delhi, India. They serve industries that require exceptional corrosion resistance and strength. Spectacle flanges are made up of two metal discs—one solid (blind) and one open (ring)—joined by a bar, which makes it easy to switch between open and closed flow states for maintenance and inspection. Crafted from durable Super Duplex grades like UNS S32750 and S32760, these flanges are designed to perform excellently in environments rich in chlorides and under high pressure. Vishal Flanges ensures that their Spectacle Flanges meet ASME, ANSI, and other international standards.
Super Duplex Steel Spectacle Flanges are made from a combination of ferritic and austenitic stainless steels composed of approximately 25% chromium, 4% nickel, and 3.5% molybdenum. The composition has excellent corrosion resistance, particularly against pitting, crevice corrosion, and stress corrosion cracking. Super Duplex Steel Spectacle Flanges exhibit high tensile strength, usually approximately 800 MPa, and excellent high-pressure and high-temperature endurance. These flanges are also noted for their high toughness and durability, making them suitable for use in harsh industries like oil and gas, chemical processing, and marine.
Super Duplex Steel Spectacle Flanges are crafted from UNS S32750 or S32760, containing about 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and 0.2–0.3% nitrogen. These components provide remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. They boast high tensile strength (up to 800 MPa) and yield strength (around 550 MPa), along with excellent impact toughness. The dual-phase (austenitic-ferritic) microstructure enhances fatigue strength, making these flanges perfect for demanding environments that face both chemical and mechanical challenges.
| Specification | ASTM A182 / ASME SA182 |
|---|---|
| Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Standards | ANSI/ASME B16.48, B16.47 Series A & B, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.48/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| 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 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine 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 AS 2129: Table D; Table E; Table H ANSI B16.18, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings ANSI : ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 American standard (ANSI) German (DIN) British standard (BS) 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 ASTM A182 s32950 Super Duplex Steel Flanges The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276 |
| Grades | Super Duplex Steel s32750, f53, s32760, f55, s32950, f52 |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Vishal Flanges, a leading supplier in Delhi, India, offers an extensive selection of Super Duplex Steel Spectacle Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
Super Duplex Steel Spectacle Flanges are widely used in processes where strength, hardness, and corrosion resistance are of the highest priority. Common uses include offshore oil and gas platforms, petrochemical facilities, chemical processing, and power generation facilities. Super Duplex Steel Spectacle Flanges may be designed to disconnect a pipeline or system by providing a blind or open flange depending on demand. They are ideal for conditions exposed to severe conditions such as high pressure, high temperatures and corrosive materials. Super Duplex Steel Spectacle Flanges are of great value especially in subsea applications heat exchangers and pressure vessels, yielding reliable performance under demanding conditions.
| ASME/ANSI B 16.48 | Spectacle Blind Flange |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| ASME/ANSI B 16.47 | Blind Flange [Series A & B],Threaded Flange |
| PRESSURE CLASS | 75, 150, 300, 400, 600, 900 |
| ASME/ANSI B 16.36 | Spectacle Blind Flange |
| PRESSURE CLASS | 300, 400, 600, 900, 1500, 2500 |
| PRESSURE CLASS | PN 2.5 TO PN 40 |
| BS 4504[PART 1] | Hubbed Slip-On |
| PRESSURE CLASS | PN 2.5 TO PN 400 |
| BS 1560 BOSS | Hubbed Slip-On Hubbed Threaded |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| BS10 | Plate Slip-On Flange, Slip-On Boss Flange |
| TABLE | D, E, F, H |
| DIN FLANGES | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| PRESSURE CLASS | PN 6 TO PN 100 |
Yes, we offer custom sizes for Super Duplex Steel Spectacle Flanges to meet specific project needs. Our team at Vishal Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@vishalflanges.co.in.
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.
Super Duplex Steel Spectacle Flanges are essential in pipeline systems where regular maintenance, inspection, and flow control are vital. Their main role is to provide a safe shut-off or a clear indication of flow status. These flanges are commonly found in oil and gas plants, petrochemical refineries, offshore platforms, and marine settings, delivering unmatched resistance to harsh conditions. They are also perfect for desalination units, chemical reactors, and high-pressure heat exchangers, where reliability, corrosion resistance, and strength are crucial. Their design allows for easy installation, operational safety, and a long service life in extreme industrial environments.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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