UNS 32750/ S32205 Super Duplex Steel Slip On Raised Face Flange

UNS 32750/ S32205 Super Duplex Steel Slip On Raised Face Flange

UNS 32750/ S32205 Super Duplex Steel Slip On Raised Face Flange
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UNS 32750 Super Duplex Steel Slip On Raised Face Flange


Super Duplex Steel pipe flange & fittings is known to have better stress corrosion, cracking resistance and mechanical properties than any other type of steel. Super Duplex is an austenitic ferritic iron chromium – nickel alloy with molybdenum addition. It has good resistance to pitting and a very good tensile strength and high resistance to stress corrosion cracking at moderate temperatures, compared to that of conventional austenitic
stainless steels.


Duplex (UNS S31803, 2205) Stainless Steel Seamless Pipes, Duplex ERW Pipes, Duplex Flanges, Duplex Elbow Fittings Suppliers, Manufacturers in China

Manufacturers in China | Duplex (UNS S31803, 2205) Stainless Steel Seamless Pipes, Duplex ERW Pipes, Duplex Flanges, Duplex Elbow Fittings Suppliers, 


Glen Flange is an ISO 9001:2008 certified supplier and exporter of duplex steel products in China. 

In China, we can offer Duplex stainless steel flanges manufactured as per ASME B16.5 150#, 300#, 600#, 900#, 1500#, 2500# | BS EN1092-1 PN 10/16/25/40 | BS 10 Table D, E. We are a stockholder and supplier of UNS S31803, 2205 Duplex Seamless Pipes and ERW Pipes in China. 

All raw materials purchased by Metline Industries to manufacture ASTM A182 stainless steel flanges are fully traceable to mill source or relevant specifications. All Duplex Steel Flanges and Duplex Fittings are manufactured in India, with raw materials coming from reputed Indian and Overseas Mills.

 We are a specialist supplier of large diameter and small diameter Duplex flanges, Duplex pipes and Duplex fittings in China. We can offer destructive and non-destructive test reports for all the materials.

“All Duplex Pipes, Fittings and Flanges are Available with Test Certificates as per EN 10204 3.1 – Exports is Our Specialty”

Stainless SteelTradenameUNS no.Werkstoff No.Density (g/cm3)
DuplexF51 / 2205, F60S31803 / S322051.44627.805

Glen Flange is a leading manufacturer, exporter and supplier of buttweld seamless and welded duplex fittings, duplex flanges and duplex pipes in China.

GLEN offers a complete range of duplex stainless steel pipe fittings such as duplex reducer, duplex elbow, duplex tee, duplex cross, duplex stub ends and duplex pipe bends in China. We are one of the few manufacturers in China who can weld, bend and form duplex stainless steel pipe fittings in various sizes and dimensions.

The high corrosion resistance of Super Duplex pipeline supplies makes them ideal for onshore and offshore environments in oil and gas applications. Please see our industry pages for more information regarding the implications of Super Duplex piping. All Duplex and Super Duplex materials stocked by Special Piping Materials are tested in accordance with international standard such as Norsok M630、Shell MESC.


With a PREN of around 35, duplex stainless steels are generally more corrosion resistant than 304 (PREN: 19) and 316 stainless steels (PREN: 26), particularly stress corrosion cracking.

Duplex flanges can be manufactured and supplied in a variety of sizes and pressure ratings to meet project specific requirements of our customers. Our duplex pipe and fitting products are widely supplied to many industries including boiler manufacturing, brewing tanks and desalination plants.

Duplex stainless steel pipes and duplex fittings are generally lower in cost, as lower percentage of alloying element is used in the manufacture of duplex stainless steel. The yield strength of duplex stainless steel products is higher compared to austenitic stainless steel products, as a result of which users can purchase relatively lower thickness duplex pipes and duplex fittings.

GLEN also stocks and supplies a complete range of duplex seamless pipes to complement our existing production range of duplex buttweld fittings and flanges. Duplex pipes can be supplied in cut to length sizes and also machined or fabricated to meet your piping requirements.

Duplex Flanges Manufacturer/Supplier in China

Duplex Flanges Manufacturer/Supplier in China

Duplex Fittings Manufacturer/Supplier in China

Duplex Fittings Manufacturer/Supplier in China

Duplex Pipes Supplier/Stockholder in China

Duplex Pipes Supplier/Stockholder in China

Duplex (UNS S31803, 2205) Seamless Pipes, ERW Pipes and Buttweld Pipe Fittings Suppliers in China

SpecificationA790 SA790, ASTM A 815, ASME SA 815, ASTM A 182, ASME SA 182
TypeSeamless / Welded / Fabricated
Range½”NB to 24″NB in Sch 10S, 40S, 80S, 160s, XXS
DimensionsANSI/ASME B16.9, B16.28, MSS-SP-43

Buttweld Duplex (UNS S31803, 2205) Pipe Fittings in China

Seamless/ Welded 100% Radiography Tested

Duplex Elbows – Long RadiusDuplex Stub Ends

Sizes 1/2″ – 48″

Duplex Elbows – Short RadiusDuplex Crosses
Duplex Reducing ElbowsDuplex Reducing Crosses
Duplex 45° ElbowsDuplex 180° LR Return Bends
Duplex TeesDuplex 180° SR Return Bends
Duplex Fabricated TeesDuplex Pipe Bends / Piggable Bends
Duplex ReducersDuplex Couplings
Duplex Concentric ReducersDuplex Pipe Nipples
Duplex Eccentric ReducersDuplex Forged/Plate Cut Rings
Duplex 3D ElbowDuplex End Caps
Duplex 5D ElbowDuplex Forged / Plate Circles

High Pressure Forged Duplex (UNS S31803, 2205) Pipe Fittings Suppliers in China

Threaded and Socket Weld Duplex Pipe Fittings

Duplex 90° Elbows in ChinaDuplex Couplings in China

Sizes 1/8″ – 4″

Pressure Ratings –
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS

Duplex 45° Elbows in ChinaDuplex Reducers in China
Duplex Street Elbows in ChinaDuplex Inserts in China
Duplex Tees in ChinaDuplex Caps in China
Duplex Crosses in ChinaDuplex Unions in China

Stainless Steel Duplex (UNS S31803, 2205) Flanges in China

Forged and Plate Flanges

SpecificationASTM A182 / ASME SA182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61.
UNS GradeUNS S31803, S32205, S2205, S32550, S32750, S32760.
StandardANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size½” to 24″
DimensionsANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.


Duplex Slip-On Flanges in ChinaDuplex Threaded Flanges in China

1/8″ – 36″

Raised Face or Flat Face

Duplex Weld Neck Flanges in ChinaDuplex Socket Weld Flanges in China
Duplex Blind Flanges in ChinaDuplex Reducing Flanges in China
Duplex Lap Joint Flanges in ChinaDuplex Plate Flanges in China

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All fittings and flanges are marked with Grade, Lot No, Size, Degree . On special requests we can also, make custom marking on our products.

Quality Assurance

At GLEN all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party(TUV, SGS,RINA) Inspection Report



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