Duplex Flanges manufacturers in India

Duplex Flanges manufacturer in India

Standard Specification Of ASME B16.5 UNS S31803/ S32205 Flanges, Contact US Today to buy ASTM A182 Duplex 2205 Blind Flange at factory price in India

Duplex Flanges


Duplex steels were introduced into the market over several years ago as a means of solving the problems associated with stress related corrosion cracking, induced by chlorine solution. The chemical makeup of Duplex Flanges Material is what is responsible for the flange not becoming prone to chlorine induced pitting as well. Compared to nickel based steels, these alloys have a lower cost. Since nickel is a commodity material, the cost of using alloys that have been heavily alloyed using alloy tends to be very expensive. Despite a lowered level of nickel, the Duplex 2205 Flanges manages to exhibit several important properties on account of high content of molybdenum and chromium. The content of chromium ranges between 20 – 28%, which is why the UNS S31803/ S32205 Blind Flange experiences a phenomenon known as passivation. In this phenomenon, a self-healing protective passivated oxide layer envelopes the flange making it resistant from oxidation. Duplex Stainless Steel Flanges are consequently used widely in the offshore oil and gas industry where they are exposed to corrosive media. In the oil and gas industry, the transmission of media across channels is rapid and the parts used herein may become abraded.

Duplex Flanges manufacturers in India
Duplex Flanges
Duplex 2205 Flanges
Duplex 2205 Flanges
UNS S31803 Blind Flanges
UNS S31803 Blind Flanges
Werkstoff No 1.4462 Duplex Steel Slip On Flanges
Werkstoff No 1.4462 Duplex Steel Slip On Flanges
UNS S31803 Duplex Steel 2205 Weld Neck Flange
UNS S31803 Duplex Steel 2205 Weld Neck Flange

These instances require maintenance and repair, which makes the use of Duplex Steel Flanges ideal. They aid in modifying or even cleaning these process systems. Compared to most stainless steel flanges, the corrosion resistance properties, as well as tensile properties of the Duplex Steel Slip On Flanges, are magnified.

Duplex Flanges manufacturers in India
Table of Contents


UNS S31803 Flanges Specification Chart

Specification: ASTM A182 Duplex Steel Flanges
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
UNI 6Bar 10Bar 16Bar 25Bar 40Bar
EN 10Bar 16Bar 6Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized, Yellow Transparent,
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Raised Face (RF), Large Tongue & Groove, Flat Face (FF), Large Male-Female (LMF), Groove, Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Ring Type Joint (RTJ)
Standards API 605, EN-1092, ASME B16.36, B16.48, API 590, EN, BS 1042, BS 4504, BS, ASME B16.47A/B, DIN, MSS SP44, API 6A, BS 10, ASME/ANSI B16.5, EN 1092-1, GOST, B16.47 Series A & B, API7S-43, API7S-15, DIN, JIS B2220, BS1560-3.1, ISO 70051
Size Chart 1/2" to 48"
Pressure Rating ANSI 2500 LBS, Class 150 LBS, 900 LBS, 1500 LBS, 300 LBS, 600 LBS
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
Most common types of Flange Forged / Threaded / Screwed / Plate

Duplex Flanges manufacturers in India

Duplex Flanges manufacturers in India


Check Werkstoff No 1.4462 Duplex Steel Slip On Flanges Material Equivalent, Fast And Cost-Effective Of UNS S31803 Pipe Flanges, ANSI B16.5 Duplex WNRF Flanges Dimension Table.


Equivalent Of Duplex Flanges

SA182 Gr. F51/ SA182 Gr. F60 1.4462 UNS S31803
SA182 Gr. F53 1.4410 UNS S32750
SA182 Gr. F55 1.4501 UNS S32760

Duplex Steel Blind Flanges Dimension Table

CLASS Normal Size Of Pipe Duplex SORF Flange Duplex NPT Flange Duplex SW Flange Duplex Loose Flange Duplex BLRF Flange Duplex WN Flange
150# ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
1¼ 3 3 3 3 3 3
1½ 3 3 3 3 4 4
2 5 5 5 5 5 6
2½ 8 8 8 8 7 10
3 9 9 9 9 9 11.5
3½ 11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268
CLASS Normal Size Of Pipe Duplex SORF Flanges Duplex NPT Flanges Duplex SW Flanges Duplex Loose Flanges Duplex BLRF Flanges Duplex WN Flanges
300# ½ 2 2 3 2 2 2
¾ 3 3 3 3 3 3
1 3 3 3 3 4 4
1¼ 4.5 4.5 4 4.5 6 5
1½ 6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
2½ 10 10 10 10 12 12
3 13 14 13 14.5 16 18
3½ 17 17 17 17 21 20
4 23.5 24 22 24 28 26.5
5 29 31 28 28 37 36
6 39 39 39 39 50 45
8 58 58 58 58 81 69
10 81 81 81 91 124 100
12 115 115 115 140 185 142
14 165 165 165 190 250 206
16 210 220 190 234 315 250
18 253 280 250 305 414 320
20 315 325 315 375 515 400
22 370 370 370 435 640 465
24 490 490 475 550 800 580
CLASS Normal Size Of Pipe Duplex SORF Flanges Duplex NPT Flanges Duplex SW Flanges Duplex Loose Flanges Duplex BLRF Flanges Duplex WN Flanges
600# ½ 2 2 2 2 3 3
¾ 3 3 3 3 4 4
1 4 4 4 4 4 4
1¼ 5 5 5 5 6 6
1½ 7 7 7 7 8 8
2 9 9 9 9 10 12
2½ 13 13 13 12 15 18
3 16 16 16 15 20 23
3½ 21 21 21 20 29 26
4 37 37 37 36 41 42
5 63 63 63 63 68 68
6 80 80 80 78 86 81
8 115 15 15 112 140 120
10 177 177 177 195 231 190
12 215 215 215 240 295 226
14 259 259 259 290 378 347
16 366 366 366 400 527 481
18 476 476 476 469 665 555
20 612 612 612 604 855 690
22 590 590 590 670 1000 720
24 876 876 876 866 1250 977

Different Types Of Werkstoff No 1.4462 Flanges

8 Inch, Class 600, SCH STD, ASME B16.5, Duplex Steel WN Flange

8 Inch, Class 600, SCH STD, ASME B16.5, Duplex Steel WN Flange

20 Inch, 150 Class, RF, SCH 10S, A182 F52 WN Forged Flange

20 Inch, 150 Class, RF, SCH 10S, A182 F52 WN Forged Flange

6 Inch, 150LB, SCH 80, Duplex Steel Weld Neck Flange

6 Inch, 150LB, SCH 80, Duplex Steel Weld Neck Flange

28 Inch, Class 150, RF, SCH 10, A182 Duplex Steel WN Flange

28 Inch, Class 150, RF, SCH 10, A182 Duplex Steel WN Flange

2 Inch, Class 600, RF, EN 10204-1, ASTM A182 F51 Blind Flange,

2 Inch, Class 600, RF, EN 10204-1, ASTM A182 F51 Blind Flange,

12 Inch, 2500#, ANSI B16.5, ASTM A182 F60 RTJ Blind Flange

12 Inch, 2500#, ANSI B16.5, ASTM A182 F60 RTJ Blind Flange

10 Inch, 600#, RF, ASME B16.5, ASTM A182 F53 Blind flange

10 Inch, 600#, RF, ASME B16.5, ASTM A182 F53 Blind flange

6 Inch, 150 LB, RF End, ASTM A182 F55 Blind Flange

6 Inch, 150 LB, RF End, ASTM A182 F55 Blind Flange

20 Inch, Class 150, RF, Duplex Steel Slip On Flange

20 Inch, Class 150, RF, Duplex Steel Slip On Flange

30 Inch, RF, BS 3293, Class 300, SA182 Duplex Slip On Flange

30 Inch, RF, BS 3293, Class 300, SA182 Duplex Slip On Flange

32 Inch, BS 3293, 600#, Duplex RF Slip On Flange

32 Inch, BS 3293, 600#, Duplex RF Slip On Flange

4 Inch, ASME B16.5, 300#, A182 F60 Raised Face Slip On Flange

4 Inch, ASME B16.5, 300#, A182 F60 Raised Face Slip On Flange


Duplex Steel 2205 Weld Neck Flange Weight Chart According to ASME B16.5, Suppliers Of SS Duplex Steel Flanges And Delivering Everywhere In India.


ASME B16.5 Duplex 2205 Flanges Weight Chart

Standard Class Dia. Bolt Circle Dia. Number of Bolts Bolt Size Dia. of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Flange Table C 95 67 4 13 14
Table D 95 67 4 13 14
Table E 95 67 4 13 14
Table F 95 67 4 13 14
Table H 114 83 4 16 17
Table J 114 83 4 16 17
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 1500 121 83 4 19 22
ISO 7005 (DIN) Flange PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14
Duplex Flanges manufacturers in India

SA182 2205 Plate Flange Pressure Class

ANSI/ASME B16.34 ANSI PRESSURE RATING
Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 275 720 960 1440 2160 3600 6000
200 230 600 800 1200 1800 3000 5000
300 205 540 720 1080 1620 2700 4500
400 190 495 660 995 1490 2485 4140
500 170 465 620 930 1395 2330 3880
600 140 435 580 875 1310 2185 3640
650 125 430 575 860 1290 2150 3580
700 110 425 565 850 1275 2125 3540
750 95 415 555 830 1245 2075 3460
800 80 405 540 805 1210 2015 3360
850 65 395 530 790 1190 1980 3300
900 50 390 520 780 1165 1945 3240
950 35 380 510 765 1145 1910 3180
1000 20 320 430 640 965 1605 2675
1050 20 310 410 615 925 1545 2570
1100 20 255 345 515 770 1285 2145
1150 20 200 265 400 595 995 1655
1200 20 155 205 310 465 770 1285
1250 20 115 150 225 340 565 945
1300 20 85 115 170 255 430 715
1350 20 60 80 125 185 310 515
1400 20 50 65 95 145 240 400
1450 15 35 45 70 105 170 285
1500 10 25 35 55 80 135 230
Duplex Flanges manufacturers in India

Chemical Composition Of SA182 2205 Plate Flange, Accept All Large And Small Orders Of S32205 Class 150 Steel Flange In Mumbai, India, Get ISO Certified Duplex SW Flanges Material.

Duplex Steel SW Flanges Chemical Compatibility

Gr. C Mn Si P S Cr Mo Ni N Fe
Duplex S31803 0.030 maxi. 2.00 maxi. 1.00 maxi. 0.030 maxi. 0.020 maxi. 22.0 – 23.0 3.0 – 3.5 4.50 – 6.50 0.14 – 0.20 63.72 min
Duplex S32205 0.030 maxi. 2.00 maxi. 1.00 maxi. 0.030 maxi. 0.020 maxi. 21.0 – 23.0 2.50 - 3.50 4.50 – 6.50 0.8 – 0.20 63.54 min

Check Mechanical Chart Of Duplex ASTM A182 2205 Orifice Flange, Available In A Wide Range Of Grades & Shapes Of Duplex Steel Grade F60 Threaded Flanges.

Duplex Steel Grade F60 Threaded Flanges Mechanical Chart

Grades Density (g/cm 3) Density (lb/in 3) Melting Point (°C) Melting Point (°F)
Duplex S31803 / S32205 7.805 0.285 1420 – 1465 2588 – 2669


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