Alloy Steel Threaded Fittings are high-performance fittings designed for connecting pipes in high-pressure and high-temperature applications. These fittings are widely used in the oil, gas, petrochemical, and power generation industries due to their excellent mechanical strength, corrosion resistance, and durability under harsh conditions.
ASTM A182 Alloy Steel Threaded Fittings are available in forged forms, including elbows, tees, reducers, caps, and couplings. They are manufactured to meet stringent international standards and are suitable for both pressure and structural applications. Threaded connections offer easy installation and reliable sealing in piping systems.
Alloy Steel Threaded Fittings are available in multiple grades to suit different temperature and pressure requirements. The commonly supplied ASTM A182 grades include F5, F9, F11, F22, and F91.
ASTM A182 F5 fittings provide excellent resistance to corrosion and moderate temperature applications. F9 and F11 grades offer higher strength and improved durability for medium to high-temperature service. F22 fittings are ideal for elevated temperature and high-pressure applications.
ASTM A182 F91 is a high-strength, creep-resistant grade designed for critical applications in power plants, refineries, and chemical industries. These fittings ensure safety, reliability, and long service life in demanding operating conditions.
Revinox is a trusted supplier of Alloy Steel Threaded Fittings in all ASTM A182 grades. Our fittings are available in standard, heavy-duty, and customized thread finishes to meet project-specific requirements. Alloy Steel Threaded Fittings provide a reliable solution for high-pressure, high-temperature piping systems worldwide.
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Application of Alloy Steel Threaded Fittings
| ● Oil & Gas Transportation Pipelines |
| ● Petrochemical & Refinery Industry |
| ● Power Plants & High-Pressure Systems |
| ● Onshore & Offshore Pipeline Projects |
| ● Construction & Infrastructure Projects |
Specification Table of Buttweld Fittings
| Specification | Details | |
|---|---|---|
|
Standard
|
ASTM A182 / ASME SA182 | |
|
Grades
|
F5, F9, F11, F22, F91 | |
|
Type
|
Elbows, Tees, Reducers, Caps, Crosses | |
|
End Connections
|
Buttweld, Socket Weld | |
|
Size Range
|
1/2" to 48", custom sizes available on request | |
|
Schedule
|
SCH 10, SCH 40, SCH 80, SCH 160 up to SCH XXS | |
Delivery Condition
Revinox Buttweld Fittings are supplied in normalized, heat-treated, or solution-annealed conditions as per ASTM A182 standards. All products undergo strict quality checks including dimensional inspection, radiography, and mechanical testing to ensure compliance with international standards.
| Grade | Delivery Condition | Fitting Type |
|---|---|---|
| F5 | As-rolled, normalized, or solution-annealed | Elbows, Tees, Reducers, Caps, Crosses |
| F9 | Normalized & tempered / solution-annealed | Elbows, Tees, Reducers, Caps, Crosses |
| F11 | Normalized, quenched & tempered | Elbows, Tees, Reducers, Caps, Crosses |
| F22 | Normalized, quenched & tempered | Elbows, Tees, Reducers, Caps, Crosses |
| F91 | Normalized, quenched & tempered | Elbows, Tees, Reducers, Caps, Crosses |
Buttweld Fittings Grades (Sub-Products)
| ● ASTM A182 F5 – High temperature & pressure piping applications |
| ● ASTM A182 F9 – Steam and chemical plant pipelines |
| ● ASTM A182 F11 – Petrochemical and refinery systems |
| ● ASTM A182 F22 – Power plant and high-pressure piping systems |
| ● ASTM A182 F91 – Ultra-high temperature and critical service applications |
Process of Manufacturing – Buttweld Fittings
Revinox Buttweld Fittings are manufactured using forging and heat treatment processes to achieve superior mechanical properties. Each fitting undergoes precise forming, welding (if required), normalizing, quenching, and tempering as per ASTM A182 standards. All products are inspected for dimensional accuracy, surface finish, and mechanical strength before dispatch.
| Type of Fitting | Grades (ASTM A182) | ||||
|---|---|---|---|---|---|
| F5 | F9 | F11 | F22 | F91 | |
| Elbow | ✔ | ✔ | ✔ | ✔ | ✔ |
| Tee | ✔ | ✔ | ✔ | ✔ | ✔ |
| Reducer | ✔ | ✔ | ✔ | ✔ | ✔ |
| Cap | ✔ | ✔ | ✔ | ✔ | ✔ |
| Cross | ✔ | ✔ | ✔ | ✔ | ✔ |
Chemical Composition Table – ASTM A182 Buttweld Fittings
| Grade | C max | Mn max | P max | S max | Cr | Mo | Ni | Other Alloying Elements |
|---|---|---|---|---|---|---|---|---|
| F5 | 0.15 | 1.20 | 0.03 | 0.03 | 4.0–5.5 | 0.5–0.7 | 0.3–0.6 | V+Nb+Ti: 0.10–0.20 |
| F9 | 0.12–0.15 | 1.00–1.30 | 0.03 | 0.03 | 8.0–9.5 | 0.40–0.55 | 0.3–0.6 | V+Nb+Ti: 0.10–0.20 |
| F11 | 0.08–0.15 | 0.40–1.30 | 0.03 | 0.03 | 1.90–2.20 | 0.45–0.65 | 0.30–0.60 | V+Nb+Ti: 0.10–0.20 |
| F22 | 0.07–0.15 | 0.40–0.70 | 0.03 | 0.03 | 1.90–2.20 | 0.45–0.60 | 0.30–0.60 | V+Nb+Ti: 0.10–0.20 |
| F91 | 0.08–0.12 | 0.30–0.60 | 0.03 | 0.03 | 8.0–9.0 | 0.80–1.05 | 0.30–0.60 | V+Nb+Ti: 0.18–0.25 |
| Fitting Grade | C max | Mn max | P max | S max | Cr | Mo | Ni | Other Alloying Elements |
|---|---|---|---|---|---|---|---|---|
| F5 | 0.15 | 1.20 | 0.03 | 0.03 | 4.0–5.5 | 0.5–0.7 | 0.3–0.6 | V+Nb+Ti: 0.10–0.20 |
| F9 | 0.12–0.15 | 1.00–1.30 | 0.03 | 0.03 | 8.0–9.5 | 0.40–0.55 | 0.3–0.6 | V+Nb+Ti: 0.10–0.20 |
| F11 | 0.08–0.15 | 0.40–1.30 | 0.03 | 0.03 | 1.90–2.20 | 0.45–0.65 | 0.30–0.60 | V+Nb+Ti: 0.10–0.20 |
| F22 | 0.07–0.15 | 0.40–0.70 | 0.03 | 0.03 | 1.90–2.20 | 0.45–0.60 | 0.30–0.60 | V+Nb+Ti: 0.10–0.20 |
| F91 | 0.08–0.12 | 0.30–0.60 | 0.03 | 0.03 | 8.0–9.0 | 0.80–1.05 | 0.30–0.60 | V+Nb+Ti: 0.18–0.25 |
Mechanical Properties – ASTM A182 Buttweld Fittings
| Grade | Yield Strength (MPa Min) | Tensile Strength (MPa Min) | Elongation Min % |
|---|---|---|---|
| F5 | 205 | 415 | 30 |
| F9 | 240 | 415 | 25 |
| F11 | 275 | 415 | 22 |
| F22 | 275 | 415 | 22 |
| F91 | 415 | 620 | 20 |
ASTM A182 Buttweld Fittings – Tensile and Yield Properties
ASTM A182 Buttweld Fittings are used in high-pressure and high-temperature systems. They are designed to provide excellent tensile and yield strength, elongation, and durability for petrochemical, power, and offshore pipeline applications.
Sub-Products Offered:
- Elbows – ASTM A182 F5 / F9 / F11 / F22 / F91
- Tees – ASTM A182 F5 / F9 / F11 / F22 / F91
- Reducers – ASTM A182 F5 / F9 / F11 / F22 / F91
- Caps – ASTM A182 F5 / F9 / F11 / F22 / F91
- Crosses – ASTM A182 F5 / F9 / F11 / F22 / F91
ASTM A182 Buttweld Fittings – Tolerances
Buttweld Fittings are manufactured under strict tolerances for outside diameter, wall thickness, and out-of-roundness to ensure proper fit, mechanical strength, and reliable performance in all piping systems.
Sub-Products Covered Under These Tolerances:
- Elbows – ASTM A182 F5 / F9 / F11 / F22 / F91
- Tees – ASTM A182 F5 / F9 / F11 / F22 / F91
- Reducers – ASTM A182 F5 / F9 / F11 / F22 / F91
- Caps – ASTM A182 F5 / F9 / F11 / F22 / F91
- Crosses – ASTM A182 F5 / F9 / F11 / F22 / F91