Kalp Industries

Duplex Steel Flanges Supplier

Duplex Steel Flanges are essential components in various industries, known for their exceptional corrosion resistance and high strength. They are made from duplex stainless steel, a material that combines the beneficial properties of both austenitic and ferritic stainless steel.

Duplex steel is a two-phase microstructure consisting of approximately equal parts of austenite and ferrite. This unique composition provides these flanges with remarkable corrosion resistance, making them suitable for harsh environments where traditional stainless steel might fail. They excel in resisting pitting and crevice corrosion, especially in chloride-rich conditions, such as those encountered in offshore and marine applications.

The high strength of duplex steel flanges is another noteworthy feature. They have a higher tensile strength compared to austenitic stainless steel, allowing them to withstand heavy loads and pressure. This makes them ideal for applications in the oil and gas industry, where flanges are subjected to extreme pressures and temperatures.

Duplex Steel Flanges, Duplex Steel Flanges Manufacturer, Duplex Steel Flanges Supplier, Duplex Stainless Steel Flanges, Duplex Blind Flange, Duplex Steel Forged Flange, ASME B16 5 Duplex Steel Forged Flange, Class 150 Duplex Pipe Flange, Class 300 Duplex Steel Welding Neck Flange, Duplex Steel Slip On Flanges, Duplex Steel Flanges Manufacturer in Mumbai, India.

Table of Content

ASME SA182M Duplex Steel S32205 Class 300 Flange, Duplex Steel S32205 Class 300 Flange, 2205 Duplex WNRF Flanges, Duplex Flat Flange, Duplex En 1092 1 Flanges, Duplex Flanges, Duplex Steel Flanges Stockist in India.

These flanges are also known for their excellent resistance to stress corrosion cracking (SCC) and fatigue, further enhancing their durability. This property makes them suitable for use in industries like chemical processing, where corrosive chemicals and high-pressure systems are prevalent.

Duplex steel flanges come in various types, including slip-on, weld neck, socket weld, and blind flanges, catering to diverse application requirements. They are often used to connect pipes, valves, and other equipment, creating a secure and leak-free joint. Their exceptional sealing properties reduce the risk of leaks, making them an excellent choice for critical applications.

The versatility of duplex steel flanges extends to their compatibility with a wide range of fluids, making them suitable for industries such as petrochemicals, food processing, and pharmaceuticals. Their corrosion resistance and strength ensure the integrity of the system and the safety of the operation.

Specification For Duplex Steel Flanges

Specifications ASTM A182 & ASME SA182
Dimensions ANSI/ASME B16.5, B 16.47 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)
Flanges Banner

STOCKIST & SUPPILERS FOR DUPLEX STEEL Flanges IN INDIA, CUSTOM SIZES DSS SORF, WNRF, Blind Flanges AS PER CLIENT REQUIREMENT

Equivalent Grades Of Duplex Steel Flanges

STANDARD WERKSTOFF NR. UNS
Duplex 2205 1.4462 S31803 / S32205

Various Types of Duplex Steel Flanges

Slip on Flange

Duplex Steel Slip On Flanges

  • ANSI B16.5 DSS Slip On Flanges
  • Duplex Stainless Steel Slip On Flange
  • ASTM A182 Duplex Slip On Flanges
  • Duplex Steel Slip On Flange
  • A182 DSS Slip On Flanges
  • DSS Slip On Flanges
  • Duplex Steel Slip On Flanges
Socket Weld Flange

Duplex Steel Socket Weld Flanges

  • ANSI B16.5 DSS Socket Weld Flanges
  • DSS Socket Weld Flanges
  • Duplex Stainless Steel Socket Weld Flange
  • Duplex Steel Socket Weld Flanges
  • ASTM A182 Duplex Socket Weld Flanges
  • A182 DSS Socket Weld Flanges
  • Duplex Steel Socket Weld Flange
Blind Flange

Duplex Steel Blind Flanges

  • DSS Blind Flanges
  • Duplex Steel Blind Flanges
  • A182 DSS Blind Flanges
  • ASTM A182 Duplex Blind Flanges
  • ANSI B16.5 DSS Blind Flanges
  • Duplex Stainless Steel Blind Flange
  • Duplex Steel Blind Flange
Weld Neck Flange

Duplex Steel Weld Neck Flanges

  • ANSI B16.5 DSS Weld Neck Flanges
  • Duplex Steel Weld Neck Flanges
  • DSS Weld Neck Flanges
  • Duplex Stainless Steel Weld Neck Flange
  • A182 DSS Weld Neck Flanges
  • ASTM A182 Duplex Weld Neck Flanges
  • Duplex Steel Weld Neck Flange
Threaded Flange

Duplex Steel Threaded Flanges

  • DSS Threaded Flanges
  • Duplex Steel Threaded Flange
  • ANSI B16.5 DSS Threaded Flanges
  • Duplex Stainless Steel Threaded Flange
  • ASTM A182 Duplex Threaded Flanges
  • A182 DSS Threaded Flanges
  • Duplex Steel Threaded Flanges
Lap Joint Flange

Duplex Steel Lap Joint Flanges

  • Duplex Steel Lap Joint Flanges
  • ASTM A182 Duplex Lap Joint Flanges
  • A182 DSS Lap Joint Flanges
  • DSS Lap Joint Flanges
  • Duplex Stainless Steel Lap Joint Flange
  • Duplex Steel Lap Joint Flange
  • ANSI B16.5 DSS Lap Joint Flanges

Ready Stock Of Duplex Steel Flanges

  • Duplex Steel Flanges
  • Duplex EN 1092-1 Flanges
  • DSS BS 4504 Flanges
  • Duplex Steel 2205 Forged Flanges
  • UNS S31803 Flanges
  • Duplex Steel S32205 Slip on Flanges
  • Duplex Steel Gr. F51 Flat Flange
  • ANSI 2205 Duplex Steel Blind Flange
  • DSS Gr. F52 Weld Neck Flanges
  • Duplex Steel Socket weld Flanges
  • Duplex Stainless Steel F53 Long Weld Neck Flanges
  • Duplex F54 Threaded Flanges
  • Duplex Steel Grade F55 Reducing Flanges
  • Duplex Steel F56 Ring Type Joint Flanges
  • Duplex Steel DIN 1.4462 Orifice Flange
  • Duplex Steel S32205 Spectacle Blind Flanges
  • Duplex Steel UNS S32205 WNRF Flange
  • Duplex 2205 SORF Flanges
  • ANSI B16.5 Duplex Steel F57 RTJ Flanges
  • Duplex Steel Screwed Flanges
  • ASTM A182 Duplex Steel F59 Lap Joint Flanges
  • ASME SA182 Duplex Steel BLRF Flange
  • Duplex Steel Gr. F60 Raised Face Flanges
  • 2205 Duplex Steel Nipo Flange
  • A182 Duplex Steel S32205 Square Flanges
  • ASME SA182M Duplex Steel S31803 SWRF Flange
  • Duplex Steel F61 Tongue & Groove Flanges
  • Duplex Steel S31803 Male & Female Flanges
  • Duplex Steel S32205 DIN Flanges
  • Duplex Steel ASME B16.5 Flanges

Duplex Steel Flanges Dimension

Standard Class Diameter Bolt Circle Diameter Number of Bolts Bolt Size Diameter of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Flanges 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) Flanges 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

Size Chart of Duplex Steel Flanges

Nominal Pipe Size Outside Diameter of Flanges Thickness of Flanges Diameter of Raised Face Diameter of Hub at Base Length Thru Hub Diameter or Bore Diameter of Hub at Bevel Radius of Fillet Depth of Socket
Welding Neck Slip-On Threaded Socket Lap Joint Slip-on Socket Lap Joint
O Q R X Y Y Y W B H r Z
1/2 3-1/2 7/16 1-3/8 1-3/16 1-7/8 5/8 5/8 .88 .90 .84 1/8 3/8
3/4 3-7/8 1/2 1-11/16 1-1/2 2-1/16 5/8 5/8 1.09 1.11 1.05 1/8 7/16
1 4-1/4 9/16 2 1-15/16 2-3/16 11/16 11/16 1.36 1.38 1.32 1/8 1/2
1-1/4 4-5/8 5/8 2-1/2 2-5/16 2-1/4 13/16 13/16 1.70 1.72 1.66 3/16 9/16
1-1/2 5 11/16 2-7/8 2-9/16 2-7/16 7/8 7/8 1.95 1.97 1.90 1/4 5/8
2 6 3/4 3-5/8 3-1/16 2-1/2 1 1 2.44 2.46 2.38 5/16 11/16
2-1/2 7 7/8 4-1/8 3-9/16 2-3/4 1-1/8 1-1/8 2.94 2.97 2.88 5/16 3/4
3 7-1/2 15/16 5 4-1/4 2-3/4 1-3/16 1-3/16 3.57 3.60 3.50 3/8 13/16
3-1/2 8-1/2 15/16 5-1/2 4-13/16 2-13/16 1-1/4 1-1/4 4.07 4.10 4.00 3/8 7/8
4 9 15/16 6-3/16 5-5/16 3 1-5/16 1-5/16 4.57 4.60 4.50 7/16 15/16
5 10 15/16 7.5/16 6-7/16 3-1/2 1-7/16 1-7/16 5.66 5.69 5.56 7/16 15/16
6 11 1 8-1/2 7-9/16 3-1/2 1-9/16 1-9/16 6.72 6.75 6.63 1/2 1-1/16
8 13-1/2 1-1/8 10-5/8 9-11/16 4 1-3/4 1-3/4 8.72 8.75 8.63 1/2 1-1/4
10 16 1-3/16 12-3/4 12 4 1-15/16 1-15/16 10.88 10.92 10.75 1/2 1-5/16
12 19 1-1/4 15 14-3/8 4-1/2 2-3/16 2-3/16 12.88 12.92 12.75 1/2 1-9/16
14 21 1-3/8 16-1/4 15-3/4 5 2-1/4 3-1/8 14.14 14.18 14.00 1/2 1-5/8
16 23-1/2 1-7/16 18-1/2 18 5 2-1/2 3-7/16 16.16 16.19 16.00 1/2 1-3/4
18 25 1-9/16 21 19-7/8 5-1/2 2-11/16 3-13/16 18.18 18.20 18.00 1/2 1-15/16
20 27-1/2 1-11/16 23 22 5-11/16 2-7/8 4-1/16 20.20 20.25 20.00 1/2 2-1/8
24 32 1-7/8 27-1/4 26-1/8 6 3-1/4 4-3/8 24.25 24.25 24.00 1/2 2-1/2

Weight Chart of Duplex Steel Flanges

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

ASTM A182 DSS Flanges Chemical Composition

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

DSS Flanges Mechanical Properties

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

We Serve Application Industry

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.

Aerospace Industry
Aerospace Industry
Construction Industry
Construction Industry
Mineral & Mining Industry
Mineral & Mining Industry
Oil and Gas Industry
Oil and Gas Industry
Petrochemical Industry
Petrochemical Industry

We Export DSS Flanges Across the Globe

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

Domestic Supply Duplex Steel Flanges

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

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