Duplex Steel Flanges Manufacturer, Duplex Weld Neck Flanges, ANSI B16.5 Duplex Steel Flanges, Duplex Steel Slip on Flanges, Duplex Stainless Steel Flanges, Duplex Socket weld Flanges Manufacturer in India

Sysco Fittings is a leading Duplex Steel Flanges Manufacturer in India. The wide range offers corrosion-resistant and high-quality fittings that go into specialty or general applications for Duplex Weld Neck Flanges, ANSI B16.5 Duplex Steel Flanges, Duplex Steel Slip on Flanges, and Duplex Socket weld Flanges. These castings made according to the quality standards of the ISO 9001, ISO 14001, and ISO 45001 guarantee high leak-proof performance connections for oil and gas, petrochemicals, power plants, marine, chemical processing, and water treatment industries. The simplex steel solutions are acknowledged and certified to ISO standards, a testament to the respect with which these Duplex Steel Slip on Flanges are manufactured, based on advanced engineers' principles that in every way make their mark across the industry.

Duplex Steel Flanges Manufacturer

Duplex Steel Spectacle Blind Flanges, Duplex Steel Pipe Flanges, Duplex Steel Blind Flanges, Duplex Steel Industrial Flanges, Duplex Plate Flanges, Duplex Stainless Steel Lap Joint Flanges Supplier in India


Sysco Fittings is a trusted Duplex Steel Flange Supplier and Manufacturer in India. We offer an array of these flanges out of Duplex Steel material because of their corrosion-resistant property, including Duplex Steel Lap Joint Flanges, Duplex Steel Orifice Flanges, and Duplex Long Weld Neck Flanges. Thus, a residual combination of sulfur and chromium provides high-temperature and high-pressure resistance. Sysco produces these Duplex Steel Flanges as per the required norms with standards like ISO 9001, ISO 14001, and ISO 45001, thus providing leak-proof and reliable connections for oil & gas, petrochemical, power plants, marine, chemical processing and water treatment markets. Sysco Fittings offers ISO-certified, precision-engineered duplex steel solutions trusted by industries worldwide. We are also certified Duplex Steel Forged Fittings Manufacturers in India.


Fast
Delivery

We ensure fast and efficient delivery of our products worldwide.

24/7
Service

Our team is always available for inquiries, order processing, and technical assistance

Custom
Fabrication

We offer custom fabrication for our products, tailored to your specifications.

Quality
Testing

We conduct quality testing to ensure the highest standards in our products.



Specifications Of Duplex Steel Flanges


Standard ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Size 1/2″ (15 NB) to 48″ (1200NB), DN10~DN5000
Pressure Rating Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Flange Connection / Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe.
Types of Flanges Threaded / Screwed / Forged / Plate
Coating Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized
Test Of Flange Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine.
Production Technique Used Heat treated, Forged and Machined
Equipment Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc.
Grades F201, F202, F301, F302, F304, F304L, F309, F310, F316, F316L, F316LN, F317L, F321, F347, 405, 409, 410, 420, 430, 440C, F904L

Types of Duplex Steel Flanges

Duplex Blind Flange

Duplex Blind Flange

Duplex Alloy Plate Flange

Duplex Alloy Plate Flange

Duplex Steel Slip on Flange

Duplex Steel Slip on Flange

Duplex Steel Weld Neck Flanges

Duplex Steel Weld Neck Flanges

Duplex Steel Lap Joint Flange

Duplex Steel Lap Joint Flange

Duplex Steel Orifice Flange

Duplex Steel Orifice Flange

Duplex Long Weld Neck Flange

Duplex Long Weld Neck Flange

Mechanical Properties of Duplex Steel Flanges

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

Chemical Properties of Duplex Steel Flanges

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

Duplex Steel Flange Dimensions Chart

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

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Various Types Industry

Applications of Duplex Steel Flanges

  • Oil & Gas Industry

  • Water Treatment Plants

  • Chemical Processing

  • Power Plants

  • Pharmaceutical Industry

  • Food & Beverage Industry

  • Marine & Shipbuilding

  • Mining & Metallurgy Industry

Packaging of Duplex Steel Flanges


The packaging of Duplex Steel Flanges is fundamentally important to guarantee safety in transit, with no loss in product quality or damage. Sysco Fittings follows packing standards recommended internationally which will protect it from corrosion, impact, and the effects of the environment.

  • Wooden Crates
  • Pallet Packaging
  • Carton Packaging
  • Bubble Wrap Packaging
  • Plastic Wrapping
  • Box Packaging
  • Custom Packaging
  • Poly Bag Packaging
Packing of Flanges

Other types of Duplex Steel Flanges

Other Types of Products

Our

*Other Types of Duplex Steel Flanges
  • Duplex Steel RTJ Flanges
  • Duplex Steel Puddle Flanges
  • Duplex Steel Nipo Flanges
  • Duplex Steel Raised Face Flange
  • Duplex Steel Spectacle Blind Flanges
Other Types of Products

Our

*Other Types of Duplex Steel Flanges
  • Duplex Steel Reducing Flanges
  • Duplex Steel Long Weld Neck Flanges
  • Duplex Steel Plate Flanges
  • Duplex Steel Threaded Flanges
  • Duplex Steel Raised Face Flange