Duplex Flanges Manufacturers in India

Top 9 Characteristics of Duplex Flanges

Type of Steel :

  • Austenitic Ferritic

Chromium Content :

  • 22%

UNS Designation :

  • UNS S32205

Suitable For :

  • Marine Applications

Features :

  • Long Service Life

Environments :

  • Chloride

Grades :

  • Duplex 2205 Flanges

Standard :

  • ASTM A182

Stainless Series :

  • 300 Series

A Duplex flanges is a channel that helps in connecting and transporting steam and fluids in the gas and refineries to different places. The Duplex flanges are designed with dual-certified austenitic and ferritic microstructure. These flange have a good composition of chromium, nickel, molybdenum, and nitrogen, allowing them to possess enhanced resistance to reducing and corrosive media. Duplex stainless steel flanges have excellent strength with good impact toughness.

These Duplex pipe flanges provide stability to different pipes during the movement of the flow in the system. The Duplex steel flanges are easy to install and can be readily modified and inspected. The flange can be readily bolted and welded following standard procedures.

Saudi Aramco Approved Alloy 2205 Blind Flange Supplier in Mumbai

Duplex Flanges Specification

Manufacturing Sizes :

Manufacturing Sizes :

  • DN15 To DN1500
  • NPS: ½" to 24"
  • PN2.5 To PN400
  • Contact Duplex Flanges manufacturers in India for above 48 Inch
Pressure Class :

Pressure Class :

  • Class 150 & 300
  • Class 600 & 900
  • Class 1500 & 2500
Maximum Size :

Maximum Size :

  • 26" To 60" As Per ASME B16.47
Manufacturing Way :

Manufacturing Way :

  • Forged
  • Cast
  • Plate
Bolts Hole Number :

Bolts Hole Number :

  • 4 To 48
Finishing :

Finishing :

  • Concentric Serrated
  • Stock & Smooth
  • Cold Water Finish
  • Mirror Finish
  • Spiral Serrated
Faces :

Faces :

  • Tongue & Groove Face
  • RF Face
  • FF Face
  • Male & Female Face
  • RTJ Face
Threads Types :

Threads Types :

  • NPT Threads
  • BSP Threads
  • MPT & MNPT Threads
  • FPT Threads
  • BSPT Threads
Schedule :

Schedule :

  • SCH 10/ 20/ 40
  • SCH 60/ 80/ 100
  • SCH 120/ 140/ 180
Installations & Applications :

Installations & Applications :

  • Nuclear Energy
  • Petrochemicals
  • Power Generation
  • Oil & gas plants
Testing Requirements :

Testing Requirements :

  • Impact test
  • PMI test
  • Hardness test
  • Tensile test
  • Material inspection
Advantages :

Advantages :

  • Extremely corrosion resistant
  • Work hardenable alloys
Connection Method :

Connection Method :

  • Welding
  • Threaded
Marking Details :

Marking Details :

  • Manufacturers Name
  • Grade & Material
  • Size & Schedule
  • Standard & Heat No.
Life :

Life :

  • Duplex Steel = 35 To 40 Years
Japanese Standard :

Japanese Standard :

AWWA Standard :

AWWA Standard :

BS Standard :

BS Standard :

Value Added Services :

Value Added Services :

  • Minor Fabrication
  • Casting
  • Polishing
  • Beveling end
  • Threading
Logistics :

Logistics :

  • By Air
  • By Sea
  • Norway = 45 day
  • Vietnam = 10 day
  • Thailand = 7 days
  • Australia = 21 days
  • Russia = 20 days
  • UAE = 5 day
  • Mexico = 45 day
Available Packaging :

Available Packaging :

  • Wooden Cases
  • Wooden Pallet
  • Carton Box
Documentation & Records :

Documentation & Records :

  • Material traceability records
  • Raw material test reports
  • Fumigation certificates
Applicable Fluids :

Applicable Fluids :

  • Oil and Gas
  • Water & Air
  • Steam
Forging Temperature :

Forging Temperature :

  • 1200-955 °C

Duplex Blind Flange Price List

Size Approx. Weight /Unit Price In US (Dollar) Price In UAE (Dirham) Price In Singapore Dollar (Singapore)
DN15 0.54 US $9 AED 33.06 SGD 11.92
DN20 0.72 US $13.5 AED 49.59 SGD 17.88
DN25 1.08 US $18 AED 66.11 SGD 23.84
DN32 1.41 US $21.28 AED 78.16 SGD 28.19
DN40 1.86 US $28.16 AED 103.43 SGD 37.30
DN50 3.04 US $45.15 AED 165.84 SGD 59.81
DN65 4.68 US $70.00 AED 257.11 SGD 92.73
DN80 5.66 US $92.15 AED 338.47 SGD 122.07
DN100 8.52 US $125.14 AED 459.64 SGD 165.77
DN125 10.07 US $184.15 AED 676.39 SGD 243.94
DN150 13.11 US $215.96 AED 793.23 SGD 286.08
DN200 23.12 US $375.43 AED 1378.96 SGD 497.32
DN250 19.67 US $305.27 AED 1121.26 SGD 404.38

Duplex Flanges manufacturers in India, Our Prices For Duplex 2205 Blind Flange Are Highly Competitive In Mumbai.


Duplex Slip On Flange Price List

Size Approx. Weight /Unit Price In US (Dollar) Price In Saudi Riyal (Saudi Arabia) Price In Australian Dollar (Australia)
DN15 0.54 US $3.27 SAR 12.27 AUD 4.96
DN20 0.67 US $4.08 SAR 15.31 AUD 6.18
DN25 0.99 US $6.21 SAR 23.31 AUD 9.41
DN32 1.24 US $8.00 SAR 30.03 AUD 12.13
DN40 1.62 US $11.10 SAR 41.67 AUD 16.83
DN50 2.6 US $17.14 SAR 64.34 AUD 25.98
DN65 3.94 US $25.65 SAR 96.28 AUD 38.88
DN80 4.45 US $30.18 SAR 113.28 AUD 45.75
DN100 6.61 US $43.26 SAR 162.38 AUD 65.58
DN125 7.2 US $49.39 SAR 185.39 AUD 74.87
DN150 8.49 US $47.29 SAR 177.51 AUD 71.68
DN200 14.21 US $103.15 SAR 387.19 AUD 156.36
DN250 19.67 US $127.30 SAR 477.84 AUD 192.97
DN300 31.83 US $215.39 SAR 808.49 AUD 326.50
DN350 40.48 US $272.20 SAR 1021.73 AUD 412.61
DN400 52.33 US $355.53 SAR 1334.52 AUD 538.93
DN450 57.17 US $388.87 SAR 1459.67 AUD 589.47
DN500 76.48 US $513.39 SAR 1927.07 AUD 778.22
DN600 104.08 US $706.10 SAR 2650.43 AUD 1070.34

Compare The Price With The Different Duplex Flanges manufacturers in India. Save 15%-20% By Ordering 2205 Duplex Slip On Flange Directly From The Stockist in Mumbai.


Duplex Weld Neck Flange Price List

Size Approx. Weight/Unit Price In US (Dollar) Price In South African Rand (South Africa) Price In Philippine Peso (Philippines)
DN15 1.05 US $6.22 ZAR 113.37 PHP 356.50
DN20 1.56 US $9.37 ZAR 170.78 PHP 537.04
DN25 2.09 US $12.76 ZAR 232.57 PHP 731.34
DN32 2.61 US $15.97 ZAR 291.07 PHP 915.32
DN40 3.66 US $19.06 ZAR 347.39 PHP 1092.42
DN50 3.86 US $30.00 ZAR 546.78 PHP 1719.45
DN65 6.27 US $48.54 ZAR 884.69 PHP 2782.07
DN80 8.42 US $58.39 ZAR 1064.22 PHP 3346.62
DN100 13.92 US $82.29 ZAR 1499.83 PHP 4716.45
DN125 18.75 US $102.43 ZAR 1866.90 PHP 5870.78
DN150 23.46 US $132.26 ZAR 2410.58 PHP 7580.48
DN200 36 US $215.39 ZAR 3925.72 PHP 12345.08
DN250 52.21 US $274.70 ZAR 5006.71 PHP 15744.43

If You're Not Satisfied With Duplex Weld Neck Flange Distributor, Get Connected With An Authentic DSS Lap Joint Flanges Supplier in Mumbai.


Material Grade Of Duplex Flange

Manufacturer of Duplex Slip On Flange in Size Ranging 1/2" to 24" With MTC EN 10204/3.1B

The Alloy 2205 Slip on Flange is a common flange in the industry as they are slid on the pipe and welded using one or more fillet welds. These flange are seen in applications where stress on the system is low. A DIN 1.4462 socket weld flange has a similar strength to a slip on flange and is connected using a single fillet weld. These flange are seen in small bore-size pipes and are not preferred in certain applications where corrosion is high.


Duplex Stainless Flanges Size Chart

Pressure Size
Class 150 Up to 24"
Class 300 Up to 20"
Class 600 Up to 20"
Class 900 Up to 16"
Class 1500 Up to 10"
Class 2500 Up to 8"

Duplex Pipe Flanges Better Than Stainless Steel?

  • Better price stability

  • Greater corrosion resistance particularly

  • Lower price

  • Higher strength leading to weight saving

View Heat treatment of Duplex Stainless Steel Flanges, Tensile Requirements, and Suitable Environment For SAF 2205 Forged Flange

Heat treatment Of Duplex Forged Flanges

  • Annealing = 1040 – 1080°C

  • 1900 – 1975°F

Tensile Requirements of 2205 Flanges

Temperature Tensile Strength
122°F 96 KSI
212°F 90 KSI
392°F 83 KSI
572°F 81 KSI

Suitable Environment of Alloy 2205 Flanges

Suitable Environment Grades
Organic acids
  • 2205, RDN 903
Chlorine acid, hydrogen chlorine and hydrochloric acid
  • 2205, 2304, Zeron 100
Sulphuric acid
  • 2205
Corrosion-resistant service
  • 2205

Stockist Of 2205 Duplex Weld Neck and Plate Flange, Available in Class 75 To 2500 With MTC

Duplex Stainless Steel Flange Pressure Rating

Working Pressure = 75 PSI

-20~100°F 200°F 300°F 400°F 500°F
145 130 115 100 85
600°F 650°F 700°F 750°F -
70 60 - - -

Working Pressure = 150 PSI

-20~100°F 200°F 300°F 400°F 500°F
290 260 230 200 170
600°F 650°F 700°F 750°F -
140 125 110 95 -

Working Pressure = 300 PSI

-20~100°F 200°F 300°F 400°F 500°F
750 745 665 615 580
600°F 650°F 700°F 750°F -
555 545 540 530 -

Working Pressure = 600 PSI

-20~100°F 200°F 300°F 400°F 500°F
1500 1490 1335 1230 1160
600°F 650°F 700°F 750°F -
1115 1095 1085 1065 -

Working Pressure = 900 PSI

-20~100°F 200°F 300°F 400°F 500°F
2250 2230 2000 1845 1740
600°F 650°F 700°F 750°F -
1670 1640 1625 1595 -

Working Pressure = 1500 PSI

-20~100°F 200°F 300°F 400°F 500°F
3750 3720 3335 3070 2905
600°F 650°F 700°F 750°F -
2785 2735 2710 2660 -

Working Pressure = 2500 PSI

-20~100°F 200°F 300°F 400°F 500°F
6250 6200 5560 5120 4840
600°F 650°F 700°F 750°F -
4640 4560 4520 4430 -

Also Refer Duplex Steel Flange Weight, Advantages and Disadvantages, and Compare DSS 2205 Pipe Flanges with Austenitic and Ferritic.

Duplex Flange Weight

  • Type = Slip On Flange

  • Standard = ASME B16.5

  • Face & SCH = RF and SCH 40

  • Weight = in KG (Kilogram)

NPS Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500
1/2 0.5 0.9 0.9 0.9 2.7 2.7
3/4 0.9 1.4 1.4 1.4 2.7 2.7
1 0.9 1.4 1.6 1.8 3.4 3.6
1.4 2 2 2.3 4.5 4.5
1.4 2.9 2.9 3.2 6.3 6.3
2 2.3 3.2 3.6 4.1 9.9 11.3
3.6 4.5 5.4 5.9 13.9 16.2
3 4.1 5.9 6.8 7.2 16.2 21.6
4 7.7 9.5 9.5 - -
4 5.9 10.6 11.7 16.7 23.9 32.9
5 6.8 13.0 13.9 28.4 37.4 59.4
6 8.6 17.6 19.8 36 49.5 74.3
8 13.5 26.1 30.2 51.8 77.4 117
10 19.4 36.5 40 79.7 110.3 196.2
12 28.8 51.8 58.5 96.8 146.7 300.2
14 40.5 74.3 85 116.6 180 423
16 47.7 94.5 113.9 164.7 206.6 562.5
18 58.5 113.9 139.5 214.2 291.2 731.3
20 74.3 141.8 170.1 275.4 356.4 922.5
22 83.3 166.5 182.3 265.5 - -
24 99 220.5 242.6 394.2 666 1271

Chromium Contents of DSS Flanges

Molybdenum Contents of SAF 2205 Flanges

Advantages and Disadvantages of Duplex Flange

Advantages Disadvantages
Good Corrosion Resistance Lower Heat Resistance
Good Mechanical Properties Working Environment Below 300° Centigrade
Good Weldability Good Cold Working Process
High Hot Working Temperature Medium-Temperature Brittle Zone (475°C)

Compositions Of Duplex SS Flanges

Grade WNR No. & UNS Composition
- - Chromium Nickel Molybdenum NNitrogen Manganese
2101 LDX WNR 1.4162 & UNS S32101 21.5% 1.5% 0.3% 0.22% 5%
DX2202 WNR 1.4062 & UNS S32202 23% 2.5% 0.3% 0.2% 1.5%
RDN 903 WNR 1.4482 & UNS S32001 20% 1.8% 0.2% 0.11% 4.2%
2304 WNR 1.4362 & UNS S32304 23% 4.8% 0.3% 0.10% -

ISO Certified Duplex Flanges Manufacturers in India, We Use Only the Best Materials for Our Duplex Blind Flanges at Low Price in Mumbai.

Compare Duplex 2205 Flanges with Austenitic and Ferritic

Grade Type
430 Ferritic
304 Austenitic
441 Ferritic
RDN 903 Duplex
316 Austenitic
444 Ferritic
316L 2.5 Mo Austenitic
2101 LDX Duplex
2304 Duplex
DX2202 Duplex
904L Austenitic
2205 Duplex
Zeron 100 Duplex
Ferrinox 255/
Uranus 2507Cu
Duplex
2507 Duplex
6% Mo Austenitic

Duplex Flanges Manufacturers in India Who Offers Cutting and Forging Service in India, Purchase Duplex Slip On Flanges Directly From Supplier for Marine Environments.


Applications of Duplex Stainless Steel Flanges

  • Chemical processing

  • Transport and storage

  • Oil and gas refining

  • Marine environments

  • Pollution control equipment

  • Pulp & paper manufacturing

Working Temperature Of Duplex Weld Flange

  • Above 300°C

  • 572°F

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