Duplex Steel Weld Neck Flanges are robust, corrosion-resistant components crafted for high-pressure and high-temperature piping systems. Made from duplex stainless steel, these flanges come with a long tapered hub that ensures excellent stress distribution, minimizing localized stress and guaranteeing reliable, leak-proof connections. Thanks to their unique dual-phase microstructure, they boast impressive mechanical strength and resistance to chlorides, making them perfect for tough and corrosive environments. You’ll find Duplex Steel Weld Neck Flanges commonly used in offshore structures, petrochemical plants, and industrial pipelines where durability and consistent performance are a must.
These flanges are made up of chromium, nickel, and molybdenum, with added nitrogen to boost strength and resistance to pitting. This well-balanced composition gives them outstanding protection against stress corrosion cracking, chloride attack, and general corrosion. On the mechanical side, they showcase high tensile and yield strength, excellent toughness, and remarkable fatigue resistance. Their metallurgical stability and low thermal expansion make them a great fit for systems that experience fluctuating pressures and temperatures.
| Specification | ASTM A182 / ASME SA182 |
|---|---|
| Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| 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, MDuplex Steel S44, ISO70051, JISF51220, 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 |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, F60-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. B.S: BS4504 , BS3293, BS1560, BS10 The other standard: AWWA C207; EN1092-1, GOST12820, JIS F51220; KS B1503, SABS1123; NFE29203; UNI2276 |
| Grades | Duplex Steel S32205, S31803, F51, F60 |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Abulaila Flanges, a leading supplier in Amman, Jordan, offers an extensive selection of Duplex Steel Weldneck 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.
Duplex Steel Weld Neck Flanges are widely utilized in subsea pipelines, chemical processing units, refineries, desalination plants, and high-pressure steam systems. Their strength and corrosion resistance make them ideal for seawater applications, heat exchangers, reactors, and pressure vessels. You’ll also find these flanges in oil and gas production facilities, marine engineering, and power generation industries, where dependable, long-term performance is crucial. Duplex Steel Weld Neck Flanges ensure secure, leak-tight joints, making them the go-to choice for even the most challenging industrial settings.
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex S31803 | 1.4462 | S31803 |
| Duplex 2205 | 1.4462 | S32205 |
| ASME/ANSI B 16.5 | Welding Neck Flange |
| PRESSURE CLASS | 150, 300, 400, S32205, 900, 1500, 2500 |
| ASME/ANSI B 16.47 | Blind Flange [Series A & B],Welding Neck Flange |
| PRESSURE CLASS | 75, 150, 300, 400, S32205, 900 |
| ASME/ANSI B 16.36 | Welding Neck Flange |
| PRESSURE CLASS | 300, 400, S32205, 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, S32205, 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 Duplex Steel Weldneck Flanges to meet specific project needs. Our team at Abulaila Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@abulailaflanges.com.
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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