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Super Duplex Steel S32750 spectacle blind flanges, made for long term use in demanding conditions, are manufactured and exported by Ratna Exports. This duplex stainless steel also referred to as SAF 2507 combines ferrite and austenite phases for exceptional corrosion resistance and strength. The alloy contains key elements like chromium (24–26%), molybdenum (3–5%), and nickel (6–8%), which make it ideal for use in seawater, chemical, and high-stress industrial systems. These flanges are known for durability, safety, and performance where it matters most.
These flanges are made for tough jobs. The alloy has exceptional resistance to stress corrosion, cracking, and erosion due to its combination of chromium, molybdenum, nitrogen and nickel. It works effectively in high-chloride environments, such as desalination plants, acidic process lines, and marine platforms. S32750 is ideal for structural and mechanical stability due to its high density (7.8 g/cm³) and melting point (1350°C). Customers choose this material for reliability under pressure, extreme weather, and corrosive fluids.
Super Duplex S32750 spectacle blind flanges are used in many industries. These include offshore oil rigs, petrochemical systems, water treatment plants, and pulp & paper mills. Their function is simple but critical—either stopping or allowing fluid flow through a pipeline. We offer these in a range of sizes as per super duplex pipe specifications and dimensions. They can also be paired with S32750 spacer flanges in maintenance operations. Their strength, formability, and low thermal expansion make them easy to fabricate and install, even in tight spots.
Our flanges are expertly and carefully crafted. To guarantee excellent quality we follow all significant standards, including ASTM, ASME, and EN. Every product is examined and safely packaged for international delivery. Our S32750 flanges are a wise investment because of their long service life, low maintenance requirements and strong wear resistance. To find the best solution for your needs get in touch with us right now.
| ASME B16.5 Spectacle Blind Flange Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Spectacle Blind Flange Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Spectacle Blind Flange Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| Spectacle Blind Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, 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 |
| 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 |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| most typical types of Spectacle Blind Flange | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third-Party Inspection Report, etc |
| Production technique |
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| 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 transonic flaw detector, Magnetic particle detector |
| 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.
Spectacle Blind Flange: -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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| Spectacle Blind Flange Uses & Application |
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| Export to | Saudi Arabia, Spain, Ireland, Singapore, USA, Dubai, Peru, Brazil, Indonesia, Ukraine, Canada, Thailand, Korea, Iran, India, Egypt, Oman, etc. |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
| 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 |
| Grades | Tensile strength | Yield strength | Elongation | Hardness |
| S32750 | 800 min | 50 min | 15 | 310 max |
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex 2507 | 1.4410 | Spectacle Blind Flanges 32760 |
| spectacle blind flange raised face | spectacle blind flange pn16 |
| spectacle blind flange flat face | ASME B16.48 Spectacle Flange |
| Spacer blind flange | spectacle blind flange ASME B16.48 |
| Blind Spectacle Flange | Spectacle Blind Flange |
| spectacle blind flange 300 | ASME B16.5 Spectacle Blind Flanges |
| Piping Spectacle Blind Flange | ASME B16.48 |
| Spectacle Blind Flange Class 150 | Spectacle Blind Flange Flat Face |
| Spectacle Blind Flange Figure 8 | Spectacle Blind Flange Raised Face |
| Spectacle Blind Flange Rf | Spectacle Blind Flange Rtj |
Please note this is an approx Super Duplex Steel S32750 Spectacle Blind Flanges price in India. For final S32750 Super Duplex Steel Spectacle Blind Flanges price list please mail us.
Ratna Exports ensures that all of the materials we supply to our clients go through a stringent quality check before they are dispatched to them.
They are used to isolate or open flow in piping systems, mainly in high-pressure and corrosive environments.
They offer high strength, excellent corrosion resistance and long term durability in chloride-rich and harsh settings.
Yes, according to industry standards, all products come with standard test certificates.
Yes, we offer customization in size, dimensions, and standards based on project requirements.
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