Caliper Overseas is a reliable Duplex Steel S31803 Flanges manufacturer and supplier in India that provides high-quality flange solutions assuring superior performance in challenging conditions. Duplex Steel S31803 flanges are manufactured from stainless steel material that possesses excellent strength with outstanding corrosion resistance. Our flanges are produced according to ASTM A182 / ASME SA182 specifications and come in different types such as weld neck, slip-on, socket weld, blind and threaded flanges to meet different industrial needs.
Density of Duplex S31803 flanges is 7.805 g/cm³, and the melting point, lies between 1420°C to 1465°C (2588°F to 2669°F). It possesses superior resistance to crevice corrosion, stress corrosion cracking, and pitting, thus suitable for use in chemical processing, oil & gas, marine, and power generation sectors. Our flanges also provide high mechanical strength and long-lasting durability. For top-quality flanges at competitive prices, contact us today to get the best solution for your industrial needs.
Table Of Content
About Duplex Steel S31803 Flanges
Duplex Steel Flanges S31803 Specification
Equivalent Grades Of Duplex Steel S31803 Flanges
Chemical Composition Of Duplex Steel S31803 Flanges
Duplex Steel S31803 Flanges Mechanical Properties
Stock Availability of Duplex Steel S31803 Flanges
Duplex Steel S31803 Flanges Ready Stock

| Standard | ASTM A182 / ASME SA182 |
| Dimensions | 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 |
| Flange Size Chart | 1/2" (15 NB) to 48" (1200NB), DN10~DN5000 |
| Pressure Rating | 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 |
| JIS | 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K |
| Flange Connection / 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, Flange Pipe. |
| Origin | West Europe / Japan / Indian / USA / Korean |
| Types of Flanges | Threaded / Screwed / Forged / Plate |
| Coating | Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized |
| Test Of Flange | Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine. |
| Production technique Used | Heat treated, Forged and Machined |
| Equipment | Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc. |
| Test Certificates | EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc |
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex S31803 | 1.4462 | S31803 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Duplex Steel S31803 Flanges in Distillery Plants
Duplex Steel S31803 Flanges in Sugar Industries
Duplex Steel S31803 Flanges in Process Industries
Duplex Steel S31803 Flanges in Power Plants
Duplex Steel S31803 Flanges in Refineries
Duplex Steel S31803 Flanges in Petrochemical Plants
Your Duplex Steel S31803 Flanges
Duplex Steel S31803 Flanges Stock Availability
Duplex Steel S31803 Slip On Flanges
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Duplex Steel S31803 Weld Neck Flanges
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Duplex Steel S31803 Blind Flanges
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Duplex Steel S31803 Socket weld Flanges
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