Duplex Steel Flange Manufacturer and Supplier in India - NFI
Neelam Forge India is a reliable Duplex Steel Blind Flange Manufacturer in India. Duplex Flanges have an austenitic and ferritic metallurgic characteristic in their microstructure. Duplex Stainless Steel Flanges have high amounts of chromium in comparison with other steel and have good corrosion resistance properties. Duplex Steel Flat Face Flanges are also cost-effective and have been used and replaced for other material grades in the recent past. The Duplex Steel Slip On Flange Material has nickel, chromium, carbon, manganese, phosphorus, silicon, sulfur, molybdenum, and iron in it.
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Duplex Flanges Supplier, Duplex Steel 2205 Slip On Flange and ASTM A182 F51 UNS S31803 Welding Neck Flanges Price, Duplex Steel Flange Manufacturers in India
We Neelam Forge India are a well-known ASTM A182 Duplex Steel Flange Manufacturer, Supplier, and Stockist in India. Our Duplex Steel Pipe Flange are approved for their superb quality, toughness, and safety. Our Duplex Steel Reducing Flanges is mainly used in various industries Oil & Gas, Petrochemical, Sugar Mill, Ship Building, and others. Our Duplex Stainless Steel Flange has excellent strength and corrosion-resistant properties. The Duplex Steel Threaded Flange supplied by Neelam Forge India is at a 10-15 % lower price.
As per the Duplex Steel Plate Flanges Manufacturer in India, these flanges are long-lasting, require low maintenance, and are easy to join and form. By using Duplex Steel Large-diameter Flange reduce the need for pipe welding.
Standard Specification of Duplex Steel Industrial Flanges
| Specification | ASTM A182 / ASME SA182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| UNS Grade | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | ½” to 24″ |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
Duplex Steel Flanges Grades Available
Check Duplex Steel S31803 & S32205 Flanges suppliers available grades.
Duplex Steel Pipe Flanges Weight Chart
| Standard | Class | Diameter | Bolt Circle Diameter | Number of Bolts | Bolt Size | Diameter of Bolt Hole |
|---|---|---|---|---|---|---|
| AS4087 Flanges | PN14 Flanges | 95 | 67 | 4 | M12 | 14 |
| ANSI B16.5 Flanges | ANSI 150 Flanges | 89 | 60 | 4 | 13 | 16 |
| ANSI 300 Flanges | 95 | 67 | 4 | 13 | 16 | |
| ANSI 600 Flanges | 95 | 67 | 4 | 13 | 16 | |
| ANSI 900 Flanges | 121 | 83 | 4 | 19 | 22 | |
| ANSI 1500 Flanges | 121 | 83 | 4 | 19 | 22 | |
| AS 2129 Flange | Table C Flanges | 95 | 67 | 4 | 13 | 14 |
| Table D Flanges | 95 | 67 | 4 | 13 | 14 | |
| Table E Flanges | 95 | 67 | 4 | 13 | 14 | |
| Table F Flanges | 95 | 67 | 4 | 13 | 14 | |
| Table H Flanges | 114 | 83 | 4 | 16 | 17 | |
| Table J Flanges | 114 | 83 | 4 | 16 | 17 | |
| ISO 7005 (DIN) Flange | PN6 Flanges | 80 | 55 | 4 | M10 | 11 |
| PN10 Flanges | 95 | 65 | 4 | M12 | 14 | |
| PN16 Flanges | 95 | 65 | 4 | M12 | 14 | |
| PN20 Flanges | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 Flanges | 95 | 65 | 4 | M12 | 14 | |
| PN40 Flanges | 95 | 65 | 4 | M12 | 14 |
Duplex Steel Plate Flange Manufacturer in India at discounted Price, Types of Duplex Steel Flanges
ASTM A182 Duplex S31083 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 | |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1½ | 3 | 3 | 4 | 3 | 3 | 4 | |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 | |
| 2½ | 8 | 8 | 7 | 8 | 8 | 10 | |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 | |
| 3½ | 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 | |
| 1¼ | 4 | 4.5 | 6 | 4.5 | 4.5 | 5 | |
| 1½ | 6 | 6.5 | 7 | 6.5 | 6.5 | 7 | |
| 2 | 7 | 7 | 8 | 7 | 7 | 9 | |
| 2½ | 10 | 10 | 12 | 10 | 10 | 12 | |
| 3 | 13 | 13 | 16 | 14.5 | 14 | 18 | |
| 3½ | 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 | |
| 1¼ | 5 | 5 | 6 | 5 | 5 | 6 | |
| 1½ | 7 | 7 | 8 | 7 | 7 | 8 | |
| 2 | 9 | 9 | 10 | 9 | 9 | 12 | |
| 2½ | 13 | 13 | 15 | 12 | 13 | 18 | |
| 3 | 16 | 16 | 20 | 15 | 16 | 23 | |
| 3½ | 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 |
Chemical Composition 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 |
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 |
Application Of Duplex Steel Flanges
Packing Of Duplex Steel Flange
The packing is done export-worthy, making sure the client receives our flanges in good condition.
Neelam Forge India is a Manufacturer and Supplier of Duplex Steel Flanges supplying in all Ratings up to 2500#.- Neelam Forge India
Leading Lean Duplex Flange Supplier in India Cities
Mumbai, Bhosari, Vijayawada, Thiruvananthapuram, Visakhapatnam, Kerala, Chennai, Hyderabad, Indore, Pune, Baroda, Nashik, Varanasi, Bangalore, Lucknow, Navi Mumbai, Kolkata, Gujarat, Coimbatore, Pimpri-Chinchwad, Ahmedabad, Faridabad, Jamshedpur, Ranchi.