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Duplex Steel Weldneck Flanges

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Easy Installation

Strong Durability

Cost
Effective

Heat Resistance

Excellent Weldability

Corrosion Resistance

Hudson Flanges is a leading manufacturer and supplier of Duplex Steel Weldneck Flanges in the Midlands of the UK. Renowned for providing high performance corrosion resistant solutions to meet industrial requirements. Our duplex steel weldneck flanges are strong, reliable , and designed for excellent weldability. Are ideal for critical applications in areas such as oil and gas, chemical processing, and marine engineering. Focusing on accuracy and strict quality control we ensures that each product meets stringent industry standards. Our commitment to quality and durability positions us as a trusted supplier of duplex steel weldneck flanges for complex environments and high-pressure systems.

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Duplex Steel Weldneck Flanges

Duplex Steel Welding Neck Flanges​ in UK

Duplex Steel Welding Neck Flanges

Duplex Steel WNFF Flanges​ in UK

Duplex Steel WNFF Flanges

Duplex steel weldneck flanges are made from a balanced mixture of austenite and ferritic phases, typically containing 22-25% chromium, 4-7% nickel and 2-3% molybdenum. These materials provide outstanding corrosion resistance especially in acidic environments with high chloride content . Technically duplex steel weldneck flanges provide high tensile strength, excellent fatigue resistance, and toughness making them ideally suited for high-pressure applications. Advantages include increased weldability reduced risk of stress corrosion cracking clean and lower cost due to lower alloy than others stainless steel production. Ideal for critical applications in industries these flanges ensure reliable durable performance under harsh conditions.

Table of Contents

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Duplex Steel Weldneck Flanges Specification

SpecificationASTM A182 / ASME SA182
Size Chart1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
StandardsANSI/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 ANSIClass 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
UNI6Bar 10Bar 16Bar 25Bar 40Bar
EN6Bar 10Bar 16Bar 25Bar 40Bar
CoatingOil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Test CertificatesEN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production TechniqueForged, Heat treated and machined
Connect Type/ Flange Face TypeRaised 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

TestDirect-reading Spectrograph, Hydrostatic testing machine, F60-ray detector, UI trasonic flaw detector, Magnetic particle detector
EquipmentPress 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 B16.5, ANSI B16.47 Series A & B, MDuplex Steel SP44, ASA, API-605, AWWA, Custom Drawings
ANSI : ANSI B16.5, ANSI B16.47(API605), MDuplex Steel SP44, ANSI B16.36, ANSI B16.48
ANSI B16.5, ANSI B16.47, MDuplex Steel 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 Duplex Steel S31803 Duplex Steel Flanges
The other standard: AWWA C207; EN1092-1, GOST12820, JIS F51220; KS B1503, SABS1123; NFE29203; UNI2276
GradesDuplex 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

Largest Duplex Steel Weldneck Flanges Supplier in Midland, UK

Hudson Flanges, a leading supplier in Midland, UK, 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.

Contact us to get a quick quote for your requirement.

We offer These Flanges as per DIN, ISO, JIS or ANSI Standard.

Duplex steel weldneck flanges are required where strength and corrosion resistance are required. In the oil and gas industry pipelines connect water and treat offshore and onshore flows providing longevity in harsh environments with high chloride levels in chemical plants using these flanges use to transport corrosive materials and benefit from acid and caustic resistance. Power manufacturers rely on duplex steel weldneck flanges for high temperature high pressure piping systems to ensure safe and continuous operation including for use in marine engineering, desalination and wastewater treatment are functional. Where their durable construction and stress-corrosion resistance counteract longevity system reliability and scalability.

Duplex Steel Weldneck Flanges Price List in United Kingdom, Duplex Steel Weldneck Flanges Stockist in United Kingdom, Duplex Steel Weldneck Flanges Price List in Nottingham, Duplex Steel Weldneck Flanges Manufacturer in UK, Duplex Steel Weldneck Flanges United Kingdom, Duplex Steel Weldneck Flanges Exporters in Nottingham, Duplex Steel Weldneck Flanges Price List

Types of Duplex Steel Weldneck Flanges

24Inch Duplex Steel Welding Neck Flange
Duplex Steel F51 Welding Neck Pipe Flanges in UK
Duplex Steel F51 Welding Neck Pipe Flanges
Duplex Steel S32205 Weld Neck Flange in UK
Duplex Steel S32205 Weld Neck Flange
Duplex Steel Welding Neck Flanges in UK
Duplex Steel Welding Neck Flanges
4inch Duplex Steel Weld Neck Flange in UK
4inch Duplex Steel Weld Neck Flange
Duplex Steel S32205 WNRTJ Flanges in UK
Duplex Steel S32205 WNRTJ Flanges

Duplex Steel Weldneck Flanges Equivalent

STANDARDWERKSTOFF NR.UNS
Duplex S318031.4462S31803
Duplex 22051.4462S32205

Pressure Rating of Duplex Steel Welding Neck Flanges

ASME/ANSI B 16.5Welding Neck Flange
PRESSURE CLASS150, 300, 400, S32205, 900, 1500, 2500
ASME/ANSI B 16.47Blind Flange [Series A & B],Welding Neck Flange
PRESSURE CLASS75, 150, 300, 400, S32205, 900
ASME/ANSI B 16.36Welding Neck Flange
PRESSURE CLASS300, 400, S32205, 900, 1500, 2500
PRESSURE CLASSPN 2.5 TO PN 40
BS 4504[PART 1]Hubbed Slip-On
PRESSURE CLASSPN 2.5 TO PN 400
BS 1560 BOSSHubbed Slip-On Hubbed Threaded
PRESSURE CLASS150, 300, 400, S32205, 900, 1500, 2500
BS10Plate Slip-On Flange, Slip-On Boss Flange
TABLED, E, F, H
DIN FLANGESDIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASSPN 6 TO PN 100

Are Custom Sizes Available for Duplex Steel Weldneck Flanges?

Yes, we offer custom sizes for Duplex Steel Weldneck Flanges to meet specific project needs. Our team at Hudson Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@hudsonflanges.co.uk.

Material Testing

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.

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Application Industry of Duplex Steel Weldneck Flanges

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