Alloy Steel Pipe Fittings
At Stellanox Steel, we manufacture and supply high-strength Alloy Steel Pipe Fittings built to perform under extreme pressure, temperature, and corrosive conditions. Engineered from heat- and corrosion-resistant alloy steels, our fittings are ideal for oil & gas, petrochemical, power generation, refinery, and boiler applications.
Whether for seamless integration into critical pipelines or high-performance pressure systems, Stellanox Steel’s alloy fittings ensure leak-proof connections, mechanical integrity, and long-term durability.
What are Alloy Steel Pipe Fittings?
Alloy Steel Pipe Fittings are components used to connect, control, change direction, or adapt the flow within piping systems made from alloy steels like ASTM A234 WP5, WP11, WP22, WP91, etc.
These fittings are engineered to handle high pressures, elevated temperatures, and corrosive media — offering significantly enhanced performance compared to carbon steel fittings. They are commonly used in power plants, boilers, oil refineries, chemical plants, and heat exchangers.
| Products |
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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 of Alloy Steel Pipe Fittings
- High Temperature Strength – Ideal for boiler, superheater, and heat exchanger systems
- Excellent Tensile & Yield Strength – Withstands internal pressure in high-stress piping
- Creep & Fatigue Resistance – Reliable in cyclic thermal or mechanical loading
- Good Machinability & Weldability – Suitable for complex fabrication needs
- Corrosion & Oxidation Resistance – Performs in steam, gases, and acidic conditions
- Available in Multiple Grades & Sizes – Customized for structural or pressure needs
Specification Chart – Alloy Steel Pipe Fittings
| Property | Details |
|---|---|
| Product | Alloy Steel Pipe Fittings |
| Types Available | Elbow (45°, 90°), Tee (Equal, Reducing), Reducer (Con/Ecc), Cap, Coupling, Union |
| Grade Range | ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91, EN 10253-2 Grades |
| Standards | ASME B16.9, ASME B16.11, MSS SP-75, DIN 2615, EN 10253 |
| Sizes | ½" NB to 48" NB |
| Thickness Range | SCH 10S, 40, 80, 160, XXS & Custom |
| Connection Type | Butt Weld, Socket Weld, Threaded |
| Heat Treatment | Normalized, Quenched & Tempered, Solution Annealed |
| Testing & Certification | PMI, UT, Radiography, Hydro Test, EN 10204 3.1/3.2, NACE MR0175 |
Chemical Composition Chart – Alloy Steel Pipe Fittings
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 415 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 20 |
| Hardness (HB) | ≤ 217 |
| Impact Resistance | Good |
Mechanical Properties Chart –Alloy Steel Pipe Fittings
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 415 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 30 |
| Hardness (HBW) | ≤ 179 |
| Operating Temperature | Up to 600°C |
Equivalent Grades Chart – Alloy Steel Pipe Fittings
| Standard | Equivalent Grade |
|---|---|
| ASTM | A234 WP5, WP9, WP11, WP22, WP91 |
| EN | 13CrMo4-5, 10CrMo9-10 |
| DIN | 1.7335, 1.7380, 1.4903 |
| JIS | STPA23, STPA24 |
Alloy Steel Pipe Fittings Weight Chart (kg/m²)
| Fitting Type | Nominal Size | Avg. Weight (kg) | Description |
|---|---|---|---|
| 90° Elbow LR | 2" | 1.10 | Long radius elbow for 90° pipe turns |
| 90° Elbow LR | 4" | 4.00 | Long radius elbow for larger pipelines |
| Equal Tee | 2" | 1.80 | Branch connection with equal diameter |
| Equal Tee | 4" | 5.50 | Branch tee used in heavy-duty piping |
| Reducer (Concentric) | 6" × 4" | 6.20 | Center-aligned diameter transition |
| End Cap | 2" | 0.80 | Used to seal the end of a 2" pipe |
| End Cap | 6" | 4.00 | Used to seal the end of a 6" pipe |
Applications of Alloy Steel Pipe Fittings in Various Industries
Benefits of Alloy Steel Pipe Fittings
- Pressure and Heat Endurance: Withstands thermal cycling and mechanical loads.
- Reliable and Leak-Proof Connections: Prevents failures in critical systems.
- Superior Longevity: Reduced downtime and maintenance in harsh environments.
- High Weldability: Simplifies on-site fabrication and pipeline integration.
- Cost-Effective in Long-Term Use: Withstands corrosion and mechanical wear.
Frequently Asked Questions
Yes, but proper welding procedures and filler metals should be selected to prevent material mismatch or thermal stress issues.
Both are high-temp grades, but WP22 contains more chromium and molybdenum for better corrosion and oxidation resistance.
Absolutely. Stellanox Steel provides straight, U-bent, and custom-cut tubes based on project specifications.
2025 Stellanox Steel |