Duplex Flanges

Are you looking for manufacturers of high pressure Duplex Stainless Steel Flanges? Supplier and exporter of ASME B16.5 Duplex Steel Forged and Plate Flanges.

Duplex steel flanges are formed of duplex steel, which is a stainless steel family. When compared to ordinary austenitic stainless steels such as stainless steel 304 or stainless steel 316, it is designed to give greater corrosion resistance, notably chloride stress corrosion and pitting corrosion, as well as higher strength.
We, Aesteiron Steels LLP, supply duplex flanges in a wide range of sizes, grades, and specifications with exceptional characteristics. It is used to link many pieces of piping system equipment such as valves, pipes, and pumps.

In most cases, duplex stainless steel flanges are stronger than ferritic stainless steel flanges. Its strength is sometimes double that of austenitic stainless steels. It has more ductility than ferritic and martensitic grades. It is suitable for usage in temperatures as low as -50°C.

Duplex stainless steel flanges are widely used in the gas offshore and oil industries for pipework systems, risers, manifolds and so on, as well as in the petrochemical industry for pressure vessels and pipelines.

The duplex 2205 flange material is strong and resistant to pitting corrosion and crevice corrosion. Duplex 2205 has a nominal chemical composition of 22% chromium, 3.2% molybdenum, 5% nickel, and various alloying elements such as manganese and nitrogen.

Duplex 2205 flanges are used to join pipes, valves, pumps, and other pieces of equipment to construct a plumbing system.

A duplex blind flange is used to seal off unused tubing or nozzles on a vessel. It marks the terminus of a piping system. It lacks a hub and a bored centre.


Standard Specification Of Duplex 2205 flanges

Specifications ASTM A182 / ASME SA182
Duplex Steel Flanges 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 Flanges.
ASTM A182 Duplex Steel Flange HS Code Duplex Steel Flange HS Code : 7307
Duplex Steel Flanges Standard DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
Stainless Steel Duplex Flanges Standard ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Manufacturer and supplier
Duplex Flanges Standard UNI 6Bar 10Bar 16Bar 25Bar 40Bar
Duplex Stainless Flanges Standard JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
ASME B16.5 Duplex Steel Flange size range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Stainless Steel Duplex Flange Standard EN 6Bar 10Bar 16Bar 25Bar 40Bar
Duplex Steel Pipe Flanges Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
ASTM A182 Duplex Steel Flange supporting material Gasket, Ring Joint, Flange Bolts
ASTM A182 Duplex Steel Flanges Production technique Forged, Heat treated and machined
Duplex Flanges Main Types Forged / Threaded / Screwed / Plate
Most common types of Duplex Steel Flanges
Weld Neck Ring Flanges (WNRF)
Slip-On Ring Flanges (SORF)
Blind Ring Flanges (BLRF)
Socket Weld Ring Flanges (SWRF)
Threaded Ring Flanges
Lap Joint Ring Flanges (LJRF)
Ring Type Joint Flanges (RTJF)
Duplex Flange Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Large Male-Female (LMF), Flat Face (FF), Small Male-Female (SMF), Lap-Joint Face (LJF), Small Tongue, Large Tongue & Groove Manufacturer and supplier
Duplex Steel Flange Test X-ray detector, Direct-reading Spectrograph, Hydrostatic testing machine, UI trasonic flaw detector, Magnetic particle detector
Equipment for DSS Flange Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Duplex Flanges Origin Indian / West Europe / Japan / USA / Korean (Strictly No china)
Duplex Flanges Special design
As per your drawing
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations
Key markets and industries for Duplex Steel Flanges
Bitumen upgraders.
Heavy oil refineries.
Nuclear power (mostly seamless).
Petrochemicals and acids.
Duplex Steel Flanges Standard
ANSI Flange
JIS/ KS Flange
API 6A Flange
ASME Flange
DIN Flange
EN1092-1 Flange
UNI Flange
BS4504 Flange
GB Flange
AWWA C207 Flange
GOST Flange
PSI Flange
Duplex Steel Flanges Application Duplex Stainless Flange used to Connect Pipe & Tubes in Shipbuilding Petroleum, Gas, Chemical, Construction, Power, Metallurgy,etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Sorf flange UNS S31803 Chemical Properties

Grade C Mn Si S Cu Fe Ni
Duplex Steel S32205 201 0.02 max 0.35 max 0.35 max 0.01 max 0.25 max 0.40 max 99.0 min

Mechanical Characteristics of Duplex Stainless Steel Flanges

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Duplex Steel S32205 201 8.9 g/cm3 1446 °C (2635 °F) Psi – 67000 , MPa – 462 Psi – 21500 , MPa – 148 45 %

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