Monel Tube Fittings
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Rudra Tubefittings, a prominent manufacturer and supplier located in Kolkata, India, specializes in high-quality Monel Tube Fittings that are built to perform reliably in tough and corrosive environments. These fittings are known for their outstanding resistance to seawater, chemicals, and harsh industrial conditions, making them perfect for critical fluid and gas systems. With a focus on advanced machining and rigorous quality control, Rudra Tubefittings guarantees that their products are leak-proof, durable, and precisely dimensioned. Their Monel Tube Fittings have earned a solid reputation for their long-lasting service life, strength, and stability, catering to industries that demand trustworthy, corrosion-resistant flow control solutions even in challenging situations.
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Monel Tube Fittings are primarily crafted from nickel-copper alloys like Monel 400 and Monel K500, which are celebrated for their remarkable corrosion resistance and mechanical strength. These alloys excel in marine settings, as well as in acidic and alkaline solutions, and under reducing conditions. Monel boasts high tensile strength, impressive toughness, and excellent resistance to stress-corrosion cracking. Monel K500, enhanced with titanium and aluminum, offers improved hardness and fatigue resistance. Both alloys maintain their structural integrity across a wide range of temperatures, ensuring reliable, high-quality connections in demanding industrial applications.
Monel Tube Fittings Specifications
| Monel Tube Fittings specification (ASTM / ASME) | ASTM B366/ ASME SB366 |
|---|---|
| Working Pressure | Up to 6,000psi (based on severity of application) |
| Two-Ferrule Tube Fittings | Pressure Ratings : Up to 11 000 psig (760 bar) |
| Medium-Pressure, Gaugeable | Pressure Ratings: Up to 20 000 psig (1378 bar) Temperature Ratings: Up to 1000°F (537°C) |
| High-Pressure Monel Tube Fittings | Pressure Ratings: Up to 60 000 psig (4134 bar) Temperature Ratings: Up to 1000°F (537°C) Materials of construction: 316 Stainless Steel Tube Fittings, Alloy 2507, Monel 400 Tube fittings |
| Monel Tube Fittings Special sizes | 22mm Monel tube fittings 25mm Monel 400 tube fittings 32mm Monel K500 tube fittings 50mm Monel Ferrule tube fittings |
| End Connections | Types: NPT, ISO/BP, SAE/MS, AN, weld ends, port connectors, sanitary flanges, tube adapters |
| Configurations | Straights, elbows, tees, crosses, caps, plugs, nuts and ferrules Chromatograph and Column End |
| Types | Unions, NPT, medium-pressure cone and thread adapters, male SAE/MS, reducers, port connectors, tube adapters, caps, plugs |
| Monel Ferrule Tube Fittings Sizes | 1/16 to 2 in.; 2 to 50 mm 1/4, 3/8, 1/2, 9/16, 3/4 in.; 6, 10, 12 mm |
| Specification | Items Made from Hex – ASTM B574 ; Items made from Round Bar- ASTM B564 |
| Brand Name | Monel Tube fittings |
| Tube Size | 1/16”OD to 2”OD, 2mm OD to 50mm OD |
| Threads | NPT (ANSI B1.20.1), BSP, BSPT (ISO thread configurations), UNF, SAE etc. |
| PTFE Standards | ASTM D1710, ASTM D3294 |
| Applicable Temperature | 150-400°C |
| Monel Tube Fittings Packing Details |
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Equivalent Grades of Monel Tube Fittings
| STANDARD | AFNOR | UNS | BS | WERKSTOFF NR. | GOST | JIS | EN |
| Monel K500 | – | N05500 | – | 2.4375 | – | – | – |
| Monel 400 | NU-30M | N04400 | NA 13 | 2.4360 | МНЖМц 28-2,5-1,5 | NW 4400 | NiCu30Fe |
Types of Monel Tube Fittings






Dimension of Monel Tube Fittings
| OD | OD Actual | Thread Designation – Nominal Size | Thread per inch | |
| (fraction inch) | (inches) | (inches) | NPT | BSP |
| 5/16 | 0.3125 | 1/16 | 27 | 28 |
| 13/32 | 0.405 | 1/8 | 27 | 28 |
| 35/64 | 0.540 | 1/4 | 18 | 19 |
| 43/64 | 0.675 | 3/8 | 18 | 19 |
| 27/32 | 0.840 | 1/2 | 14 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 | 11 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 | 11 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 | 11 |
| 2-3/8 | 2.375 | 2 | 8 | 11 |
| 2-7/8 | 2.875 | 2-1/2 | 8 | 11 |
| 3-1/2 | 3.5 | 3 | 8 | 11 |
| 4 | 4.0 | 3-1/2 | 8 | 11 |
| 4-1/2 | 4.5 | 4 | 8 | 11 |
| 5-5/8 | 5.563 | 5 | 8 | 11 |
| 6-5/8 | 6.718 | 6 | 8 | 11 |
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We offer These Products as per DIN, ISO, JIS or ANSI Standard.
Largest Manufacturer and Supplier of Monel Tube Fittings in Kolkata, Kolkata
At Rudra Tube Fittings, we are proud to be the largest supplier, manufacturer, and exporter of Monel Tube Fittings in Kolkata, Kolkata. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the Kolkata, we maintain a vast inventory of over 16,000 tons of premium-quality materials, ensuring we have the stock readily available to meet your demands.
Monel Tube Fittings Uses
Monel Tube Fittings are extensively utilized in industries that require exceptional resistance to seawater, corrosive chemicals, and extreme operating conditions. They play a crucial role in marine engineering, shipbuilding, and offshore oil and gas systems due to their unmatched durability in saline environments. Chemical and petrochemical plants depend on them for managing aggressive fluids. They are also essential in power generation, heat exchangers, and high-pressure instrumentation lines. Furthermore, Monel Tube Fittings are used in aerospace, desalination units, and high-purity gas distribution systems, where stable, leak-proof, and corrosion-resistant connections are a must.



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