Inconel Flanges Manufacturer
Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of Inconel Flanges, known for delivering reliable solutions for demanding industrial conditions. These flanges are made from Inconel, a high-performance nickel-chromium alloy designed to withstand extreme heat, pressure, and corrosion. In applications where stainless steel or carbon steel might fail, Inconel remains stable and effective. Among the different grades we provide are Inconel 600, Inconel 625, Inconel 718 and Inconel 800, all of which are known for their excellent mechanical performance. These flanges are valued for their outstanding tensile strength, elongation, and resistance to scaling and oxidation at elevated temperatures. Being one of Mumbai’s top manufacturers of Inconel flanges, we offer an extensive range of DIN 2.4856 Inconel Weld Neck Flanges, that are manufactured in accordance with international standards. Each product is meticulously designed to function dependably in sectors, where durability and safety are essential.
Benefits of Inconel Flanges
Inconel Flanges are selected for their excellent capability to function in harsh environments. Their special alloy composition makes, them suitable for harsh conditions, and high temperature applications.
- Withstand high pressure and temperatures without weakening
- Excellent corrosion protection, oxidation and scaling resistance
- Operate efficiently under cryogenic and high temperatures
- High tensile strength with excellent fatigue life
- Easy to fabricate, and weld for personalized designs
- Extended lifespan, with minimal upkeep
- Spark-resistant and non-magnetic
- Strong defense against chloride stress cracking and carburization
Difference Between Inconel Flanges and Stainless Steel Flanges
The material composition and performance are where the primary differences can be found. While Inconel is primarily a nickel-based alloy with additional elements like molybdenum and chromium for better resistance, stainless steel usually contains iron, chromium, and nickel. Even at high temperatures more than 600°C where stainless steel tends to deteriorate, Inconel flanges maintain their mechanical strength. As these flanges can tolerate harsh chemicals and oxidizing atmospheres, inconel flanges are suitable to use in chemical processing, aerospace and marine systems. Although Inconel is expenses than stainless steel, but it is more durable and resistant in adverse conditions.
Inconel Flanges Standard Size & Specification
Sizes in Stock
1/2" (15 NB) to 48" (1200NB)
Standard
ASTM B564 / ASME SB564
Dimensions
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Types of Flanges
Threaded / Screwed / Forged / Plate
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 Process
Forging, Rolling, Casting
Flange Thread
FNPT, NPT, BSPT, MNPT, BSPP
Types of Inconel Flanges
Manufacturing Types
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SORF (Slip-On Raised Face)Slides over the pipe and gets welded for easy installation in low-pressure systems.
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BLRF (Blind Raised Face)Closes off pipe ends; used for testing or sealing flow in a system.
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SWRF (Socket Weld Raised Face)Pipe fits into a recessed area and is welded around the edge. Ideal for small-bore, high-pressure lines.
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WNRF (Weld Neck Raised Face)Has a long, tapered hub and welds to the pipe for strong, leak-proof joints under high pressure.
Face Forms
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Raised Face (RF)The most common type has a raised surface that improves gasket sealing in medium to high pressure.
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Ring Type Joint (RTJ)Uses a metal ring for sealing and works well in high-pressure, high-temperature services.
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Flat Face (FF)Flat surface flange used with cast iron or low-pressure piping where full face gasket is needed.
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Lap-Joint Face (LJF)Used with stub ends and are easy to align and install. Good for systems that need frequent dismantling.
Contact Midland Alloys Inc. for Your Inconel Flanges Needs
Contact us today to discuss how Inconel Flanges can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Inconel Flanges Grades We Offer
Weight Chart
Size Chart
Weight Chart
Weight Chart of Inconel Flanges
| CLASS | NPS | NPT Flange | SORF Flange | SW Flange | BLRF Flange | Loose Flange | WN Flange |
| 150# | ½ | 1 | 1 | 2 | 2 | 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 | 3 | 4 | 3 | 4 | |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 | |
| 2½ | 8 | 8 | 8 | 7 | 8 | 10 | |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 | |
| 3½ | 12 | 11 | 11 | 13 | 11 | 12 | |
| 4 | 13 | 13 | 13 | 17 | 13 | 16.5 | |
| 5 | 15 | 15 | 15 | 20 | 15 | 21 | |
| 6 | 19 | 19 | 19 | 27 | 19 | 26 | |
| 8 | 30 | 30 | 30 | 47 | 30 | 42 | |
| 10 | 43 | 43 | 43 | 70 | 43 | 54 | |
| 12 | 64 | 64 | 64 | 123 | 64 | 88 | |
| 14 | 90 | 90 | 90 | 140 | 105 | 114 | |
| 16 | 98 | 106 | 98 | 180 | 140 | 140 | |
| 18 | 130 | 130 | 130 | 220 | 160 | 165 | |
| 20 | 165 | 165 | 165 | 285 | 195 | 197 | |
| 22 | 185 | 185 | 185 | 355 | 245 | 225 | |
| 24 | 220 | 220 | 220 | 430 | 275 | 268 | |
| CLASS | NPS | NPT Flanges | SORF | SW | BLRF | Loose | WN |
| 300# | ½ | 2 | 2 | 3 | 2 | 2 | 2 |
| ¾ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1 | 3 | 3 | 3 | 4 | 3 | 4 | |
| 1¼ | 4.5 | 4.5 | 4 | 6 | 4.5 | 5 | |
| 1½ | 6.5 | 6.5 | 6 | 7 | 6.5 | 7 | |
| 2 | 7 | 7 | 7 | 8 | 7 | 9 | |
| 2½ | 10 | 10 | 10 | 12 | 10 | 12 | |
| 3 | 14 | 13 | 13 | 16 | 14.5 | 18 | |
| 3½ | 17 | 17 | 17 | 21 | 17 | 20 | |
| 4 | 24 | 23.5 | 22 | 28 | 24 | 26.5 | |
| 5 | 31 | 29 | 28 | 37 | 28 | 36 | |
| 6 | 39 | 39 | 39 | 50 | 39 | 45 | |
| 8 | 58 | 58 | 58 | 81 | 58 | 69 | |
| 10 | 81 | 81 | 81 | 124 | 91 | 100 | |
| 12 | 115 | 115 | 115 | 185 | 140 | 142 | |
| 14 | 165 | 165 | 165 | 250 | 190 | 206 | |
| 16 | 220 | 210 | 190 | 315 | 234 | 250 | |
| 18 | 280 | 253 | 250 | 414 | 305 | 320 | |
| 20 | 325 | 315 | 315 | 515 | 375 | 400 | |
| 22 | 370 | 370 | 370 | 640 | 435 | 465 | |
| 24 | 490 | 490 | 475 | 800 | 550 | 580 | |
| CLASS | NPS | NPT Flanges | SORF | SW | BLRF | Loose | WN |
| 400# | ½ | 2 | 2 | 2 | 2 | 2 | 3 |
| ¾ | 3 | 3 | 3 | 3 | 3 | 3.5 | |
| 1 | 3.5 | 3.5 | 3.5 | 4 | 3.5 | 4 | |
| 1¼ | 4.5 | 4.5 | 4.5 | 6 | 4.5 | 4.5 | |
| 1½ | 6.5 | 6.5 | 6.5 | 8 | 6.5 | 8 | |
| 2 | 8 | 8 | 8 | 10 | 8 | 10 | |
| 2½ | 12 | 12 | 12 | 15 | 11 | 14 | |
| 3 | 15 | 15 | 15 | 20 | 14 | 18 | |
| 3½ | 21 | 21 | 21 | 29 | 20 | 26 | |
| 4 | 26 | 26 | 26 | 33 | 25 | 35 | |
| 5 | 31 | 31 | 31 | 44 | 29 | 43 | |
| 6 | 44 | 44 | 44 | 61 | 42 | 57 | |
| 8 | 67 | 67 | 67 | 100 | 64 | 89 | |
| 10 | 91 | 91 | 91 | 155 | 110 | 125 | |
| 12 | 130 | 130 | 130 | 226 | 152 | 175 | |
| 14 | 191 | 191 | 191 | 310 | 210 | 233 | |
| 16 | 253 | 253 | 253 | 398 | 280 | 295 | |
| 18 | 310 | 310 | 310 | 502 | 345 | 360 | |
| 20 | 378 | 378 | 378 | 621 | 420 | 445 | |
| 22 | 405 | 405 | 405 | 720 | 455 | 505 | |
| 24 | 539 | 539 | 539 | 936 | 615 | 640 | |
| CLASS | NPS | NPT Flanges | SORF | SW | BLRF | Loose | WN |
| 600# | ½ | 2 | 2 | 2 | 3 | 2 | 3 |
| ¾ | 3 | 3 | 3 | 4 | 3 | 4 | |
| 1 | 4 | 4 | 4 | 4 | 4 | 4 | |
| 1¼ | 5 | 5 | 5 | 6 | 5 | 6 | |
| 1½ | 7 | 7 | 7 | 8 | 7 | 8 | |
| 2 | 9 | 9 | 9 | 10 | 9 | 12 | |
| 2½ | 13 | 13 | 13 | 15 | 12 | 18 | |
| 3 | 16 | 16 | 16 | 20 | 15 | 23 | |
| 3½ | 21 | 21 | 21 | 29 | 20 | 26 | |
| 4 | 37 | 37 | 37 | 41 | 36 | 42 | |
| 5 | 63 | 63 | 63 | 68 | 63 | 68 | |
| 6 | 80 | 80 | 80 | 86 | 78 | 81 | |
| 8 | 15 | 115 | 15 | 140 | 112 | 120 | |
| 10 | 177 | 177 | 177 | 231 | 195 | 190 | |
| 12 | 215 | 215 | 215 | 295 | 240 | 226 | |
| 14 | 259 | 259 | 259 | 378 | 290 | 347 | |
| 16 | 366 | 366 | 366 | 527 | 400 | 481 | |
| 18 | 476 | 476 | 476 | 665 | 469 | 555 | |
| 20 | 612 | 612 | 612 | 855 | 604 | 690 | |
| 22 | 590 | 590 | 590 | 1000 | 670 | 720 | |
| 24 | 876 | 876 | 876 | 1250 | 866 | 977 | |
| CLASS | NPS | NPT Flanges | SORF | SW | BLRF | Loose | WN |
| 900# | ½ | 6 | 6 | 6 | 4 | 6 | 7 |
| ¾ | 6 | 6 | 6 | 6 | 6 | 7 | |
| 1 | 7.5 | 7.5 | 7.5 | 9 | 7.5 | 8.5 | |
| 1¼ | 10 | 10 | 10 | 10 | 10 | 10 | |
| 1½ | 14 | 14 | 14 | 14 | 14 | 14 | |
| 2 | 22 | 22 | 22 | 25 | 21 | 24 | |
| 2½ | 31 | 31 | 31 | 32 | 25 | 31 | |
| 3 | 36 | 36 | 36 | 35 | 29 | 36 | |
| 4 | 53 | 53 | 53 | 54 | 51 | 53 | |
| 5 | 83 | 83 | 83 | 87 | 81 | 86 | |
| 6 | 110 | 110 | 110 | 115 | 105 | 110 | |
| 8 | 172 | 172 | 172 | 200 | 190 | 187 | |
| 10 | 245 | 245 | 245 | 290 | 277 | 268 | |
| 12 | 326 | 326 | 326 | 415 | 371 | 372 | |
| 14 | 400 | 400 | 400 | 520 | 415 | 562 | |
| 16 | 459 | 459 | 459 | 619 | 488 | 685 | |
| 18 | 647 | 647 | 647 | 880 | 670 | 924 | |
| 20 | 792 | 792 | 792 | 1107 | 868 | 1164 | |
| 24 | 1480 | 1480 | 1480 | 2099 | 1659 | 2107 | |
| CLASS | NPS | NPT | SORF | SW | BLRF | Loose | WN |
| 1500# | ½ | 6 | 6 | 6 | 4 | 6 | 7 |
| ¾ | 6 | 6 | 6 | 6 | 6 | 7 | |
| 1 | 8 | 8 | 8 | 9 | 8 | 9 | |
| 1¼ | 10 | 10 | 10 | 10 | 10 | 10 | |
| 1½ | 14 | 14 | 14 | 14 | 14 | 14 | |
| 2 | 25 | 25 | 25 | 25 | 25 | 25 | |
| 2½ | 36 | 36 | 36 | 35 | 35 | 36 | |
| 3 | 48 | 48 | 48 | 48 | 47 | 48 | |
| 4 | 73 | 73 | 73 | 73 | 75 | 73 | |
| 5 | 132 | 132 | 132 | 140 | 140 | 132 | |
| 6 | 165 | 165 | 165 | 160 | 170 | 165 | |
| 8 | 260 | 260 | 260 | 302 | 286 | 275 | |
| 10 | 436 | 436 | 436 | 510 | 485 | 455 | |
| 12 | 667 | 667 | 667 | 775 | 749 | 690 | |
| 14 | 940 | 940 | 940 | 975 | 890 | 940 | |
| 16 | 1250 | 1250 | 1250 | 1300 | 1250 | 1250 | |
| 18 | 1625 | 1625 | 1625 | 1750 | 1475 | 1625 | |
| 20 | 2050 | 2050 | 2050 | 2225 | 1775 | 2050 | |
| 24 | 2825 | 2825 | 2825 | 3625 | 2825 | 3325 | |
| CLASS | NPS | NPT | SORF | SW | BLRF | Loose | WN |
| 2500# | ½ | 7 | …. | …. | 7 | 7 | 8 |
| ¾ | 9 | …. | …. | 10 | 8 | 9 | |
| 1 | 12 | …. | …. | 12 | 12 | 13 | |
| 1¼ | 18 | …. | …. | 18 | 17 | 20 | |
| 1½ | 25 | …. | …. | 25 | 24 | 28 | |
| 2 | 38 | …. | …. | 39 | 37 | 42 | |
| 2½ | 55 | …. | …. | 56 | 53 | 52 | |
| 3 | 83 | …. | …. | 86 | 80 | 94 | |
| 4 | 127 | …. | …. | 133 | 122 | 146 | |
| 5 | 210 | …. | …. | 223 | 204 | 244 | |
| 6 | 323 | …. | …. | 345 | 314 | 378 | |
| 8 | 485 | …. | …. | 533 | 471 | 576 | |
| 10 | 925 | …. | …. | 1025 | 897 | 1068 | |
| 12 | 1300 | …. | …. | 1464 | 1262 | 1608 |
Size Chart
Inconel Flanges Size Chart
| Standard | Size | OD (mm) | BCD (mm) | No. of Bolts | Bolt Hole Dia (mm) | Thickness (mm) |
| ANSI B16.5 | 1/2″ | 95 | 67 | 4 | 14 | 16 |
| ANSI B16.5 | 1″ | 120 | 90 | 4 | 14 | 18 |
| ANSI B16.5 | 2″ | 165 | 125 | 4 | 18 | 20 |
| ANSI B16.5 | 3″ | 200 | 150 | 4 | 22 | 22 |
| ANSI B16.5 | 4″ | 250 | 200 | 8 | 22 | 25 |
| ANSI B16.5 | 6″ | 300 | 250 | 8 | 25 | 30 |
| ANSI B16.5 | 8″ | 350 | 300 | 8 | 25 | 35 |
| ANSI B16.5 | 10″ | 400 | 350 | 8 | 28 | 40 |
| ANSI B16.5 | 12″ | 450 | 400 | 12 | 30 | 45 |
| ANSI B16.5 | 14″ | 500 | 450 | 12 | 30 | 50 |
| ANSI B16.5 | 16″ | 550 | 500 | 12 | 33 | 55 |
| ANSI B16.5 | 18″ | 600 | 550 | 12 | 33 | 60 |
| ANSI B16.5 | 20″ | 650 | 600 | 12 | 36 | 65 |
| ANSI B16.5 | 24″ | 750 | 700 | 16 | 36 | 70 |
| ANSI B16.5 | 30″ | 900 | 850 | 16 | 39 | 75 |
| ANSI B16.5 | 36″ | 1050 | 1000 | 16 | 42 | 80 |
| ANSI B16.5 | 42″ | 1200 | 1150 | 20 | 45 | 85 |
| ANSI B16.5 | 48″ | 1350 | 1300 | 20 | 45 | 90 |
Manufacturing Process of Inconel Flanges
Plate
Shear
Press
Inspection
Lathe
Drilling
Cleaning
Flange
Inspection
Analytic
Marking
Packing & Shipping
Applications of Inconel Flanges
Inconel Flanges provide superior strength, and corrosion resistance, which makes them a must in applications where high performance against pressure is a main concern. In the oil and gas sector, they are used in offshore platforms, sour gas systems and heat exchangers. Aerospace applications include turbine exhausts, propulsion systems, and engine components. Power generation facilities depend on Inconel flanges for steam lines, boiler systems, and nuclear reactors.In chemical processing, they are utilized for handling hostile chemicals in acid-making units, reaction vessels, and high-purity systems. These flanges are perfect for seawater piping and equipment in marine environments due to their exceptional resistance to chloride-induced corrosion. They further facilitate sanitary and corrosion-resistant piping in the pharmaceutical and food industries, while the pulp and paper industries use them in digesters and bleaching systems that are exposed to corrosive chemicals
Why Choose Midland Alloys Inc. for ASTM B564 Inconel Flanges
Midland Alloys Inc. is a reliable producer and exporter of top-quality ASTM B564 Inconel Flanges, carefully made with precision by following the international standards, including ASME SB-564 N06625. As an ISO-certified company, we produce a variety of flange styles, such as weld neck, blind, slip-on, socket weld, and lap joint, and custom designs for face styles, drilling, surface finishes, and pressure ratings. We stock ANSI B16.47 and DIN-specification flanges for immediate dispatch. Each batch is rigorously tested in-house and by third parties with Mill Test Certificates (MTCs), distinctive marking, and full traceability of chemical and mechanical characteristics. With our international network of sources in the Gulf, Europe, Southeast Asia, and Africa, we ensure timely delivery and technical assistance on any project size. Choosing Midland Alloys Inc. means choosing dependable quality, responsive service, and long-term reliability.
FAQs
Their nickel-based composition allows them to retain strength and resist oxidation above 1000°C.
Yes. Especially grades like Inconel 625 offer strong protection against chloride induced corrosion.
Yes, we provide custom drilling, face types, finishes, and pressure ratings tailored to your project needs.
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ISO Certificate
