Inconel Pipe Fittings
High-performance Inconel pipe fittings from Stellanox Steel are designed to endure harsh conditions including heat, pressure, and corrosion. These fittings, which are made from premium nickel-chromium alloys such as Inconel 600, 625, 718, and X-750, offer corrosion-resistant, high-strength, and leak-proof solutions for crucial piping systems in the chemical, petrochemical, nuclear, maritime, and aerospace industries.
Butt weld, socket weld, threaded, and flanged fittings are among our offerings; they are made in accordance with international standards such as ASME B16.9, B16.11, MSS SP-43, and ASTM B366.
What are Inconel Pipe Fittings?
Connectors known as Inconel Pipe Fittings are used to join, reroute, or terminate piping lines in situations where exposure to acidic conditions, high temperatures, and oxidising medium is inevitable. High-performance process piping requires Inconel alloys because they resist acidic breakdown, chloride attack, and crevice corrosion while maintaining mechanical integrity under heat stress.
These fittings are frequently found in systems that transport high-temperature steam, seawater, nitric acid, and sulphuric acid.
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features
- Exceptional Corrosion & Oxidation Resistance
- High Strength at Elevated Temperatures
- Resistant to Pitting, Cracking, and Thermal Cycling
- Compatible with High-Pressure and High-Vibration Systems
- Available in Butt Weld, Socket Weld, Threaded & Flanged Types
- Certified to ASTM, ASME, DIN, EN, and NACE Standards
Grades
- Inconel 600 / 601 Pipe Fittings
- Inconel 625 / 718 Pipe Fittings
- Inconel 800 / 825 Pipe Fittings
- Inconel X-750 Pipe Fittings
Specification
| Property | Details |
|---|---|
| Product | Inconel Pipe Fittings |
| Available Grades | 600, 601, 625, 718, 800, 825, X-750 |
| Standards | ASTM B366, ASME B16.9/B16.11, MSS SP-43 |
| Types Available | Elbows, Tees, Reducers, Caps, Crosses, Stub Ends, Unions, Couplings |
| Size Range | ½" NB to 24" NB |
| Schedule/Wall Thickness | SCH 10 to SCH XXS |
| End Connections | Butt Weld, Socket Weld, Threaded (NPT/BSP), Flanged |
| Heat Treatment | Solution Annealed, Pickled |
| Testing & Certification | EN 10204 3.1/3.2, PMI, UT, Hydrostatic, IGC, NACE MR0175 |
Chemical Composition
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | ≥ 58.0 |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Niobium (Nb) | 3.15 – 4.15 |
| Iron (Fe) | ≤ 5.0 |
| Carbon (C) | ≤ 0.10 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 827 MPa |
| Yield Strength | ≥ 414 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 220 HB |
| Density | 8.44 g/cm³ |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM | B366 |
| UNS | N06600, N06625 |
| DIN / EN | 2.4816, 2.4856 |
| ISO | NiCr15Fe, NiCr22Mo9Nb |
Weight
| Fitting Type | Size (inches) | Approx. Weight (kg) | Common Application |
|---|---|---|---|
| 90° Elbow LR | 1" | 0.27 | Changes flow direction in high-temp pipelines |
| 90° Elbow LR | 2" | 0.60 | Used in corrosive gas or steam systems |
| Equal Tee | 2" | 0.80 | Branch connection in chemical or exhaust systems |
| Equal Cross | 2" | 1.15 | Connects four pipe runs in superalloy assemblies |
| Concentric Reducer | 3" × 2" | 1.55 | Reduces pipe diameter in high-pressure pipelines |
| End Cap | 2" | 0.38 | Seals off pipe ends under extreme conditions |
| Stub End | 3" | 1.05 | Used with lap joint flanges for high-alloy piping |
| Threaded Coupling | 1" | 0.43 | Connects male threaded pipe ends securely |
| Threaded Coupling | 2" | 0.90 | Ideal for oil & gas or marine threaded systems |
| Union (Threaded/SW) | 1" | 0.66 | Quick-disconnect joint for maintenance-heavy lines |
| Union (Threaded/SW) | 2" | 1.35 | Allows pipe separation without cutting or welding |
Applications
- Heat ducts, turbine fluid connectors, and jet fuel lines in aerospace and defence
- Chemical Processing Facilities: High-temperature valves, acid injection lines
- High-salinity pipelines and ballast systems are examples of marine and offshore systems.
- Nuclear and Power Plants: Reactor plumbing and steam distribution
- Biotech & Pharmaceutical: Transporting caustic and high-purity fluids
- Oil and Gas Sector: Subsea manifolds and downhole control lines
Benefits
- Reliable Performance in Harsh Chemical and Thermal Conditions
- Long-Term Resistance to Stress Cracking and Fatigue
- Weldable, Formable, and Easy to Assemble
- Low Maintenance + Extended Lifecycle = Cost Efficiency
- Globally Certified for Critical Infrastructure Use
2025 Stellanox Steel |