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Duplex flanges

Duplex flanges specifications

Duplex stainless steel slip on flanges supplier in Mumbai


Looking for top quality duplex steel blind flanges? we have largest stock of DSS forged flanges, for detail information check specification table

Duplex flanges specification


Specifications Size Temperature range

 

  • ASTM A182
  • ASME SA182

 

 

  • 1/8" NB - 24" NB

 

 

  • 600°C - 1000°C

 

Grades Flange face type Coating

 

  • S31803
  • S32205

 

 

  • Flate face
  • Ring type joint
  • Raised face

 

 

  • Anti-rust paint
  • Yellow transparent
  • Oil black paint
  • Zinc plated

 

Productions process Types Class

 

  • Forging
  • Casting
  • Cutting
  • Rolling

 

 

  • Blind flange
  • Slip on flange
  • Weld neck flange
  • Socket weld flange
  • Forged flange
  • Threaded flange
  • Lap joint flange

 

 

  • 150#
  • 300#
  • 600#
  • 900#
  • 1500#
  • 2500#
  • PN6
  • PN10
  • PN16
  • PN25
  • PN40

 

DSS socket weld flanges types


Duplex threaded flanges

Duplex threaded flange

ASTM A182 socket weld flanges

ASTM A182 socket weld flange

DSS slip on flanges

DSS slip on flange

Duplex steel weld neck flanges

Duplex steel weld neck flange

Finding duplex stainless steel socket weld flange in various sizes? check our dimension chart

Duplex stainless steel forged flange dimension chart


CLASS 150#
Normal Size ½ ¾ 1 2 3 4 5 6 8 10 12 14 16 18 20 22 24
Duplex SORF Flange 1 2 2 3 3 5 8 9 11 13 15 19 30 43 64 90 106 130 165 185 220
Duplex NPT Flange 1 2 2 3 3 5 8 9 12 13 15 19 30 43 64 90 106 130 165 185 220
Duplex SW Flange 2 2 2 3 3 5 8 9 11 13 15 19 30 43 64 90 98 130 165 185 220
Duplex Loose Flange 1 2 2 3 3 5 8 9 11 13 15 19 30 43 64 105 140 160 195 245 275
Duplex BLRF Flange 2 2 2 3 4 5 7 9 13 17 20 27 47 70 123 140 180 220 285 355 430
Duplex WN Flange 2 2 3 3 4 6 10 11.5 12 16.5 21 26 42 54 88 114 140 165 197 225 268
CLASS 300#
Normal Size ½ ¾ 1 2 3 4 5 6 8 10 12 14 16 18 20 22 24
Duplex SORF Flange 2 3 3 4.5 6.5 7 10 13 17 23.5 29 39 58 81 115 165 210 253 315 370 490
Duplex NPT Flange 2 3 3 4.5 6.5 7 10 13 17 23.5 29 39 58 81 115 165 210 253 315 370 490
Duplex SW Flange 3 3 3 4 6 7 10 13 17 22 28 39 58 81 115 165 210 253 315 370 475
Duplex Loose Flange 2 3 3 4.5 6.5 7 10 14.5 17 22 28 39 58 91 140 190 234 305 375 435 550
Duplex BLRF Flange 2 3 4 6 7 8 12 16 21 28 37 50 81 124 185 250 315 414 515 640 800
Duplex WN Flange 2 3 4 5 7 9 12 18 20 26.5 36 45 69 100 142 206 250 320 400 465 580
CLASS 600#
Normal Size ½ ¾ 1 2 3 4 5 6 8 10 12 14 16 18 20 22 24
Duplex SORF Flange 2 3 4 5 7 9 13 16 21 37 63 80 115 177 215 259 366 476 612 590 876
Duplex NPT Flange 2 3 4 5 7 9 13 16 21 37 63 80 115 177 215 259 366 476 612 590 876
Duplex SW Flange 2 3 4 5 7 9 13 16 21 37 63 80 115 177 215 259 366 476 612 590 876
Duplex Loose Flange 2 3 4 5 7 9 12 15 20 36 63 78 112 195 240 290 400 469 604 670866  
Duplex BLRF Flange 3 4 4 6 8 10 15 20 29 41 68 86 140 231 295 378 527 665 855 1000 1250
Duplex WN Flange 3 4 4 6 8 12 18 23 26 42 68 81 120 190 226 347 481 555 690 720 977

Duplex socket weld flange size chart


Configurations Slip-On Flanges Weld Neck Flanges Blind Flanges Lap Joint Flanges Threaded Flanges Socket Weld Flanges Reducing Flanges Orifice Flanges
Sizes 1/8" - 36"
To check properties and applications of ASTM a182 DSS threaded flange, connect with us

DSS forged ring Applications


DSS threaded flange applications

Duplex stainless steel blind flanges chemical composition


Mo C Mn Cr Ni Si P S N Fe
3.00-3.50
.030 Max
2.00 Max
22.0-23.0
4.50-6.50
1.00 Max
.030 Max
.020 Max
0.14-0.20
Balance

DSS slip on flanges mechanical properties


Grade % Elongation YS (MPa) Hardness(BHN) UTS (MPa)
S31803 25 min. 450 min. 293 max. 620 min.

Duplex weld neck flange equivalent grade


STANDARD WERKSTOFF NR. UNS
Duplex 1.4462 S31803 / S32205

DSS socketweld flange production process


DSS socketweld flange production process
We provide premium quality of duplex slip on flange, view pressure rating below

Duplex flange pressure rating


Temp(℃) Pressure rating (ASME B16.47)
150 75 300 600 400 900
100 17.7 8.8 50.7 101.3 67.5 152.0
-29 to 38 20.0 10.0 51.7 103.4 68.9 155.1
200 13.8 6.9 42.7 85.3 56.9 128.0
50 19.5 9.8 51.7 103.4 68.9 155.1
250 12.1 6.0 40.5 80.9 53.9 121.4
300 10.2 5.1 38.9 77.7 51.8 116.6
150 15.8 7.9 45.9 91.9 61.2 137.8

DSS socket weld flange weight chart


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

Frequently Asked Questions


1. What is the ferrite content of duplex flanges?

→ 30-35 % - 60-65 % ferrite, not less than 20 , not more than 70 %

2. What is the tensile strength of duplex 2205 flange?

→ 1,16,000 psi 800 MPa

3. What grade material is a duplex flange?

→ 2205, F51, F53, F60