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Stainless Steel Duplex Steel Flanges

Stainless Steel Duplex Steel Flanges Manufacturer & Supplier:

We are a Leading Manufacturer & Supplier of Stainless Steel Duplex Steel Flanges from India. We also export 60% of our production to UAE, Kuwait, Bahrain, Sharjah, Saudi Arabia, USA, UK,  Egypt, Sri Lanka, Italy, Canada, Spain, Poland, Indonesia, Singapore and many more countries. 

Seamac Piping Solutions is identified as a trader of Duplex Steel S31803 / S32205 Flanges, which is not generally suitable for use at temperatures below -50 Degree C because of its ductile-to-brittle-transition. This leads to reduced plate thicknesses of Duplex Steel S31803 Flanges being used in fabrications reducing the weight which is of particular significance in items such as storage tanks, structural applications such as bridges and pressure vessels. This amalgamation of properties in Duplex Steel S31803 Pipe Flanges can mean a number of compromises when compared through pure austenitic & ferritic grades. Duplex Stainless Steel UNS S31803 Flanges has lower thermal expansion and higher thermal conductivity than austenitic stainless steels. UNS S31803 Duplex Steel Flanges also demonstrates worthy fatigue strength, along with outstanding resistance to strain corrosion cracking, destruction, general corrosion, crack and pitting in unadorned environments. In the annealed condition, Duplex S32205 Flanges contains approximately 40-50 % ferrite. Duplex S32205 Pipe Flanges cannot be hardened by heat treatment but stronger surface strengths can be achieved by cold working.


ASTM A182 / ASME SA182 Duplex Steel Flanges Specification :

Size : 1/8" NB TO 24" NB

Standards : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Form : Slip on Flanges – SORF, Weld neck Flanges – WNRF, Socket weld Flanges – SWRF, Blind Flanges – BLRF Lapped joint Flanges, Screwed Flanges, Long weld neck Flanges, Reducing Flanges, Spectacle Flanges, Ring joint Flanges

Grade : S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61

Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Thickness : SCH.10, 20, 30, 40, 80, 120, 160, STD, XS, XXS.


Duplex 22051.4462S31803/S32205


S318030.030 max2.00 max1.00 max0.030 max0.020 max22.0 – 23.03.0 – 3.54.50 – 6.500.14 – 0.2063.72 min
S322050.030 max2.00 max1.00 max0.030 max0.020 max21.0 – 23.02.50 - 3.504.50 – 6.500.8 – 0.2063.54 min


ElementDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
Duplex Steel S31803 / S322057.8 g/cm31350 °C (2460 °F)Psi – 116000 , MPa – 800Psi – 80000 , MPa – 55015 %

Stainless Steel Duplex Steel Flanges Exporter in Middle East, Stainless Steel Duplex Steel Flanges Supplier in Europe, Stainless Steel Duplex Steel Flanges Manufacturer in India, Stainless Steel Duplex Steel Flanges Stockholder in US, Stainless Steel Duplex Steel Flanges Wholesaler in UAE, Stainless Steel Duplex Steel Flanges Dealer in UK.

We Export Stainless Steel Duplex Steel Flanges in following countries :-
ASIA :- Malaysia, Singapore, Thailand, Vietnam, Indonesia, Sri Lanka
MIDDLE EAST :- UAE, Saudi Arabia, Qatar, Oman, Bahrain, Turkey, Kuwait
EUROPE :- Norway, Russia, France, Germany, Italy, UK, Spain, Netherland, Greece, Czech Republic,Ireland
AFRICA :- South Africa, Algeria, Nigeria, Egypt, Libya, Sudan, Gabon
SOUTH AMERICA :- Brazil, Argentina, Bolivia, Uruguay, Paraguay, Ecuador, Chile, Colombia, Venezuela

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