Monel Flanges Manufacturer
Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of Monel Flanges that meet international quality standards and project-specific requirements. The nickel-copper alloy used for manufacturing Monel Flanges are known for its outstanding resistance to corrosive environments, particularly seawater, hydrofluoric acid and alkaline conditions.
These flanges are frequently found in piping systems where corrosion resistance, strength and durability are essential. We provide monel flanges in grades like Monel 400 (UNS N04400) and Monel K500, which are known for their exceptional metallurgical stability and mechanical performance. The chemical composition of Monel 400 includes 63% nickel, and 28–34% copper, with trace elements like iron, manganese and silicon.
It is a reliable material for crucial joint connections due to its mechanical qualities, which include a tensile strength of 480 MPa to 620 MPa, yield strength of about 170 MPa, an elongation of 35%, and an area reduction of up to 45%. Our ASTM B564 Monel Flanges are expertly machined and are available in various styles, including slip-on, threaded, socket weld, blind, and Monel Alloy Weld Neck Flanges.
Benefits of Monel Flanges
- Outstanding resistance to non oxidizing acids, and seawater
- High durability and tensile strength in harsh environments
- Excellent weldability, with diverse industrial welding methods
- Exceptional resistance to stress corrosion cracking in chlorides
- Prolonged duration even in environments with harsh chemicals, and saltwater
- Applicable to different types of flanges and piping layouts
- Affordable in the long run because of minimal maintenance requirements
- Easy to machine, fabricate, and install in intricate systems
Monel Flanges Specification
1/2" (15 NB) to 48" (1200NB)
ASTM B564 / ASME SB564
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Threaded / Screwed / Forged / Plate
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Forging, Rolling, Casting
FNPT, NPT, BSPT, MNPT, BSPP
Types of Monel 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 us today to discuss how Monel Flange 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.
Technical Details & Delivery Condition
| Flange Class | Pressure Rating (psi) | Pressure Rating (bar) | Temperature (°C) |
|---|---|---|---|
| Class 150 | 285 | 19.6 | -29 to 38 |
| Class 300 | 740 | 51.0 | -29 to 38 |
| Class 600 | 1480 | 102.0 | -29 to 38 |
| Class 900 | 2220 | 153.0 | -29 to 38 |
| Class 1500 | 3705 | 255.0 | -29 to 38 |
| Class 2500 | 6170 | 425.0 | -29 to 38 |
| Nominal Pipe Size (NPS) | Outside Diameter of Flange (OD) | Thickness (t) | Bolt Circle Diameter (BCD) | Number of Bolts | Bolt Hole Diameter |
|---|---|---|---|---|---|
| 1/2″ | 95 mm | 11 mm | 66.5 mm | 4 | 15 mm |
| 1″ | 120 mm | 12 mm | 89 mm | 4 | 15 mm |
| 2″ | 150 mm | 15 mm | 120.5 mm | 4 | 19 mm |
| 3″ | 190 mm | 16 mm | 152.5 mm | 4 | 19 mm |
| 4″ | 229 mm | 18 mm | 190.5 mm | 8 | 19 mm |
| 6″ | 279 mm | 22 mm | 241.5 mm | 8 | 22 mm |
| 8″ | 343 mm | 24 mm | 298.5 mm | 8 | 22 mm |
| 10″ | 406 mm | 25 mm | 362 mm | 12 | 25 mm |
| 12″ | 483 mm | 29 mm | 431.5 mm | 12 | 25 mm |
Monel Flanges Grades We Offer
Manufacturing Process of Monel Flanges
Plate
Shear
Press
Inspection
Lathe
Drilling
Cleaning
Flange
Inspection
Analytic
Marking
Packing & Shipping
Applications of Monel Flanges
Difference between Monel Flanges vs. Nickel Alloy Flanges
Why Choose UNS N04400 Monel Flanges from Midland Alloys Inc.?
Leading Indian producer and exporter of premium UNS N04400 Monel Flanges, Midland Alloys Inc. is committed with precise engineering and stringent adherence to requirements.. Being an ISO certified company, we make sure that each product is designed to meet precise measurements and tolerances, with complete traceability and compliance with global standards. Custom options like cut-to-length services, unique end finishes, surface treatments and non-standard schedules are some of the options provided to clients. Our worldwide supply network includes the Gulf, Europe, Southeast Asia and Africa. We are known for our prompt delivery, and customized assistance for both small-batch and large-scale export orders. In order to ensure performance and dependability under demanding service conditions, we support third-party inspections, provide mill test certifications and maintain in-house testing facilities. With complete chemical and mechanical compliance, all of the flanges are marked in accordance with ASTM/ASME specifications, and are provided with Mill Test Certificates (MTC).
FAQs
We provide Monel Flanges in standard sizes from ½” to 24″, and custom sizes can be supplied upon request to meet project-dependent piping needs.
The cost of Monel flanges in India is slightly higher than regular stainless steel due to its nickel composition and custom corrosion-resistant properties, but it offers greater long term value in severe conditions.
