Super Duplex Steel Flanges Manufacturer

Global Steel is a stockholder of a wide variety of Super Duplex Flanges like Super Duplex Weld Neck Flanges, Super Duplex Threaded Flanges, Super Duplex Slip-on Flanges, etc. We strive to provide our customers with premium quality products at the best price. Super Duplex Steel Flanges undergo a strict quality check to ensure that there are no discrepancies. All our products are manufacture in accordance to internationally recognized standards.

Super Duplex steel flanges are made from an austenitic-ferritic alloy made up of nickel, chromium, and iron, with molybdenum added for good measure. They’re most recognized for their corrosion resistance, which includes general corrosion, intergranular corrosion, pitting, stress corrosion cracking at mild temperatures, and so on. These characteristics are far superior to those of typical austenitic stainless steel flanges. Super duplex steel flanges also have high tensile strength, allowing them to withstand severe pressure. They’re also resistant to a variety of chemicals, acids, acid chlorides, caustic solutions, and a variety of other conditions. Super Duplex flanges are cost-effective and good performance in a chloride rich environment. 

In comparison to austenitic steel, super duplex steel flanges have a low thermal expansion. They have excellent weldability and workability. Super duplex Flanges also possess high thermal conductivity.

The distinctive features of super duplex steel flanges make it perfect for various applications in industries like Oil & Gas industry, Pulp & paper industry, Food Industry applications, Agrochemicals, Seawater cooling, Desalination plants, and Marine Industry, Petroleum Industry.

What is a super duplex steel flange?

A super duplex steel flange is a type of flange made from super duplex stainless steel, which is a highly corrosion-resistant alloy that contains high levels of chromium, molybdenum, and nitrogen. Super duplex steel flanges are known for their excellent strength, toughness, and corrosion resistance, making them well-suited for use in a wide range of demanding industrial applications like chemical, petrochemical, and oil and gas industries, as well as in marine environments.

What are the common grades of super duplex steel flanges?

The common grades of super duplex steel flanges are UNS S32750 and UNS S32760. These grades have a high level of chromium, molybdenum, and nitrogen, as well as a low carbon content, which provides excellent resistance to corrosion and high strength. Super duplex steel flanges made from these grades are commonly used in demanding applications that require excellent resistance to corrosion and high mechanical strength, such as in the chemical and petrochemical industries, oil and gas processing, and offshore and marine environments.

How are super duplex steel flanges produced?

Super duplex steel flanges are typically produced using a variety of manufacturing processes, including forging, casting, and machining. Forged flanges are produced by heating and shaping a piece of steel into the desired shape, while cast flanges are made by pouring molten steel into a mold. After forging or casting, the flanges are typically machined and finished to meet the required specifications, including drilling, tapping, and polishing. Heat treatment may also be used to refine the flanges’ properties further.

Specification of SDSS Flanges

Standards ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc
Size 1/2″ (15 NB) to 48″ (1200NB)
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Super Duplex Steel Flanges

Manufacturing Standards of ASTM A182 Super Duplex Steel Flanges

ASME/ANSI B16.5 Blind Flange, High Hub Blind Flange, Slip on Flange, Welding Neck Flange, Socket Weld Flange, Ring Type Joint Flange, Lap Joint Flange, Threaded Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B16.47 Blind Flange [Series A & B],Welding Neck Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B16.36 Orifice Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
BS 4504 SEC 3.1 Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange,
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded,
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded,
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange
TABLE D, E, F, H
DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS PN 6 TO PN 100

Different Types

Slip On Flanges

Super Duplex Steel Slip On Flanges

Blind Flanges

Super Duplex Steel Blind Flanges

Socket Weld Flanges

Super Duplex Steel Socket Weld Flanges

Weld Neck Flange

Super Duplex Steel Weld Neck Flanges

Reducing Flanges

Super Duplex Steel Reducing Flanges

Orifice Flanges

Super Duplex Steel Orifice Flanges

Contact us to get a quick quote for your requirement.

We offer These Super Duplex Steel Flanges as per DIN, ASTM, ASME, BS, EN, JIS or ANSI Standard.

Available Stock

  • Super Duplex Steel Lap Joint Flanges
  • Super Duplex Steel Nipoflange
  • Super Duplex Steel Flanges
  • Type SDSS Industrial Forged Flanges
  • Super Duplex Steel PN 10 Flange
  • Super Duplex Steel Tongue Flanges
  • Super Duplex Stainless Steel RTJ Flanges
  • Super Duplex Stainless Steel Pipe Flange
  • Super Duplex Stainless Steel Flanges
  • Super Duplex NPT / BSP Thread Flanges
  • SDSS Groove Flanges
  • Super Duplex Steel Screwed Flanges
  • ANSI B16.5 Super Duplex Steel Expander Flanges
  • Super Duplex Steel Male & Female Flanges
  • Super Duplex Steel RTJ Flanges
  • ASME B16.47 Super Duplex Spades Ring Spacers Flanges
  • Super Duplex Steel British Standard Table D Pipe Flanges
  • Super Duplex Steel 150 LBS Threaded Flanges
  • Super Duplex Steel Long Welding Neck Flange
  • Super Duplex Stainless Steel Flanges
  • Super Duplex Steel Screwed Flanges
  • Super Duplex Steel Nipo Flanges
  • Super Duplex High Hub Blind Flanges
  • Super Duplex Stainless Steel Weldo Flanges
  • ANSI / ASME B16.5 SDSS Forged Flanges
  • Super Duplex Steel DIN Flanges
  • SDSS 1500 LBS Flanges
  • SDSS Lapped Joint Flanges
  • SDSS Flat Face Flanges
  • Super Duplex Steel Spades Ring Spacers Flanges
  • SDSS Grade ANSI Flanges
  • Super Duplex Steel BS Standard Table E
  • Super Duplex Spectacle Blind Flanges
  • Super Duplex Steel 300 LBS Flanges

Weight Chart

15mm (1/2″) Super Duplex Steel Flanges Weight Chart

Pipe Normal Diam.
O.D. Flange 
Thk. Of Flange Min 
Diam.
of
Hub 
Diameter of Raised Face 
Length Hub.Y
Thread Length
Diam. 
of Bolt
Circle
Diam. 
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
KG
LB
inch
dn
O
C
X
G
Y
T
BC
BH
BN
BD
 
 
1/2″
15
89.00
11.20
30.20
35.10
15.70
15.70
60.50
15.80
4
1/2″
0.4
0.9
3/4″
20
98.50
12.70
38.10
42.90
15.70
15.70
69.90
15.80
4
1/2″
0.7
1.5
1″
25
108.00
14.20
49.30
50.80
17.50
17.50
79.30
15.80
4
1/2″
0.8
1.8
1-1/4″
32
117.50
15.70
58.70
63.50
20.60
20.60
88.90
15.80
4
1/2″
1.2
2.6
1-1/2″
40
127.00
17.50
65.00
73.20
22.40
22.40
98.60
15.80
4
1/2″
1.5
3.3
2″
50
152.50
19.10
77.70
91.90
25.40
25.40
120.70
19.10
4
5/8″
2.3
5.1
2-1/2″
65
178.00
22.40
90.40
104.60
28.40
28.40
139.70
19.10
4
5/8″
3.7
8.1
3″
80
190.50
23.90
108.00
127.00
30.20
30.20
152.40
19.10
4
5/8″
4.1
9
3-1/2″
90
216.00
23.90
122.20
139.70
31.80
31.80
177.80
19.10
8
5/8″
5.1
11.2
4″
100
228.50
23.90
134.90
157.20
33.30
33.30
190.50
19.10
8
5/8″
5.9
13
5″
125
254.00
23.90
163.60
185.70
36.60
36.60
215.90
22.40
8
3/4″
7
15.4
6″
150
279.50
25.40
192.00
215.90
39.60
39.60
241.30
22.40
8
3/4″
8.4
18.5
8″
200
343.00
28.40
246.10
269.70
44.50
44.50
298.50
22.40
8
3/4″
13
28.6
10″
250
406.50
30.20
304.80
323.90
49.30
49.30
362.00
25.40
12
7/8″
18
39.5
12″
300
482.50
31.80
365.30
381.00
55.60
55.60
431.80
25.40
12
7/8″
29
64
14″
350
533.50
35.10
400.10
412.80
57.20
57.20
476.30
28.50
12
1″
39
86
16″
400
597.00
36.60
457.20
469.90
63.50
63.50
539.80
28.50
16
1″
47
103
18″
450
635.00
39.60
505.00
533.40
68.30
68.30
577.90
31.80
16
1 1/8″
57
126
20″
500
698.50
42.90
558.80
584.20
73.20
73.20
635.00
31.80
20
1 1/8″
76
167
24″
600
813.00
47.80
663.40
692.20
82.60
82.60
749.30
35.10
20
1 1/4″
97
214

Dimensions

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
  • ASME B1.20.1, Pipe Threads, General Purpose
  • ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250
  • ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
  • ASME B16.11, Forged Fittings, Socket Welding and Threaded
  • ASME B16.25, Buttwelding Ends
  • ASME B16.36, Orifice Flanges
  • ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60
  • ASME B31.1, Power Piping
  • ASME B31.3, Process Piping
  • ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay)

Pressure Rating

ANSI/ASME B16.34 PRESSURE RATING CHART
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

We Serve Application Industry

Application Industry

ANSI / ASME 16.5, 16.48, 16.47 Flanges applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Oil & Gas Industry

Petrochemical Industry

Power Generation Industry

Chemical Industry

We Export Super Duplex Steel Flanges Across the Globe

Greece, South Africa, Finland, Ukraine, Turkey, United Arab Emirates, Bahrain, Angola, Mexico, Netherlands, Croatia, Ecuador, Malaysia, France, Ireland, Macau, Vietnam, Iraqb, Israel, Bolivia, Nepal, Argentina, Pakistan, Australia, Hong Kong, India, Tibet, Gabon, China, Canada, Sweden, Nigeria, Germany, Estonia, Switzerland, Oman, Algeria, Indonesia, Puerto Rico, United States, Lebanon, Portugal, Bangladesh, Peru, Egypt, Kuwait, Lithuania, Colombia, Chile, Hungary, Lahore, Romania, New Zealand, Poland, Saudi Arabia, Russia, Thailand, Japan, Morocco, Libya, Italy, Yemen, Norway, Bhutan, Tunisia, Taiwan, Brazil, Venezuela, columbia, Gambia, Austria, Spain, Iran, Namibia, Czech Republic, Sri Lanka, Afghanistan, Jordan, United Kingdom, Algiera, Trinidad & Tobago, Azerbaijan, Kazakhstan, Mongolia, Bulgaria, Qatar, South Korea, Slovakia, Singapore, Costa Rica, Serbia, Denmark, Philippines, Belarus, Zimbabwe, Ghana, Kenya, Belgium.

Domestic Supply Super Duplex Steel Flanges

Howrah, Noida, Secunderabad, Hyderabad, Pune, Surat, Kanpur, Jamshedpur, Chandigarh, Haryana, Nagpur, Faridabad, Thane, Pimpri-Chinchwad, Bhopal, mumbai, New Delhi, Ernakulam , Jaipur, Navi Mumbai, Indore, Ludhiana, Ranchi, Bengaluru, Nashik, Gurgaon, Visakhapatnam, Thiruvananthapuram, Rajkot, Chennai, Ahmedabad, Kolkata.
Global Steelindia

Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

Quick Contact

Shop No.6, Sonarika Bldg, 25/C, Chandawadi, Cawasji Patel Tank, Mumbai, Maharashtra 400004