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Duplex Flanges

Duplex flanges specifications

Know About DSS Blind Flanges Check Specification and Properties

Duplex flanges specification



Duplex Flanges  

North America's favourite duplex flanges supplier ship to Lagos with in 45-60 days

Country  Name  Delivery Time
USA  45-60 days
Canada  60-70 days
Mexico  30-40 days
Panama  40
Costa Rica  50
Bahamas  wrong
Denmark  40-50

Manufacturer of Duplex Steel Slip On Flange in M&F, T&G, FF, RF and RTJ Face Type, Check Weight Chart

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

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

Find ASTM A182 Duplex Steel Weld Neck Flange in 150#, 300#, 600#, 900#, 1500# and 2500# Pressure Class, Check Pressure Ratings

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
Get Duplex Stainless Steel Socket Weld Flanges in Variety of Sizes, Check 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"

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
Check SA 182 Duplex Threaded Flanges Weight and Bolting Chart Below

SA 182 Duplex Flanges Weight and Bolting Chart


DN 15 20 25 32 40 50 65 80 90 100 125 150 200 250 300 350 400 450 500 600
Bolts No. 4 4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20
Length of RF Stud 55 65 65 70 70 85 90 90 90 90 95 100 110 115 120 135 135 145 160 170
Length of Machine Bolt 50 50 55 55 65 70 75 75 75 75 85 85 90 100 100 115 115 125 140 150
Size of Bolt in UNC 01/2 01/2 01/2 01/2 01/2 05/8 05/8 05/8 05/8 05/8 03/4 03/4 03/4 07/8 07/8 1 1 1 1/8 1 1/8 1 1/4

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