Premium Alloy Steel Forged Pipe Fittings by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a trusted manufacturer, exporter, and supplier of Alloy Steel Forged Pipe Fittings, engineered for high strength, durability, and performance in extreme pressure and temperature conditions. Manufactured using premium alloy steel grades containing chromium, molybdenum, and other alloying elements, these fittings offer superior resistance to wear, oxidation, and creep.
Alloy Steel Forged Pipe Fittings are designed for demanding industrial applications involving high pressure and elevated temperatures. They provide excellent toughness, fatigue resistance, and weldability, ensuring long-term structural integrity. Precision-forged construction delivers compact size, leak-proof joints, and reduced maintenance requirements.
Commonly used in power plants, oil & gas refineries, petrochemical industries, boilers, pressure vessels, and thermal piping systems, our alloy steel forged fittings comply with ASTM, ASME, and DIN standards. Choose Ratnadeep Steel & Engg. Co. for high-performance forged pipe fittings that deliver safety, durability, and cost efficiency.
- Alloy Steel Socket Weld Elbow
- Alloy Steel F1 Forged Elbow
- UNS K90941 Threaded Elbow
- Alloy Steel F5 Forged Elbow
- ASME SA 182 F11 45° Threaded Elbow
- Alloy Steel F9 90° Forged Elbow
- ASME SA182 Alloy Steel Socket Weld Tee
- ASTM A182 F11 Equal Tee
- DIN 1.7386 Reducing Tee
- Alloy Steel F22 Unequal Tee
- Alloy Steel Reducing Tee
- Alloy Steel F91 Threaded Equal Tee
- Alloy Steel A182 Threaded Equal Cross
- UNS K11597 / DIN 1.7338 Forged Cross
- ASME SA182 F1 Socket Weld Equal Cross
- Alloy Steel F22 Threaded Cross
- Alloy Steel F91 Reducing Cross
- Alloy Steel Forged Unequal Cross
- DIN 1.7335 Threaded Full Coupling
- UNS K11562 Forged Full Coupling
- ASME SA182 F11 Socket Weld Full Coupling
- ASTM A182 Alloy Steel F12 Full Coupling
- ASTM A182 Socket Weld Half Coupling
- Alloy Steel UNS K21590 Half Coupling
- ANSI B16.11 Alloy Steel F1 Threaded Half Coupling
- UNS K90901 Forged Pipe End Cap
- Alloy Steel F22 Threaded Pipe Cap
- ASTM A182 F91 Socket Weld Pipe Cap
- ASME SA182 Alloy Steel Forged End Cap
- UNS K21590 Socket Weld Union
- ANSI B16.5 Alloy Steel Union
- ASTM A182 Threaded Union
- ASME SA182 Alloy Steel Forged Union
- UNS K41545 Forged Bushing
- B16.36 Alloy Steel Hex Head Bushing
- ASTM A182 F12 Threaded Bushing
- ASME SA182 F5 Forged Threaded Bushing
- UNS K90941 Threaded Nipple
- B16.36 Socket Weld Nipple
- ASTM A182 Alloy Steel Swage Nipple
- ASME SA182 Alloy Steel Hex Nipple
- Alloy Steel F91 Screwed Pipe Nipple
CHEMICAL COMPOSITION OF ALLOY STEEL FORGED PIPE FITTINGS
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | V |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A234 WP1 | 0.10-0.20 | 0.30-0.80 | 0.045 max | 0.045 max | 0.15-0.40 | 0.15 max | 0.44-0.65 | 0.15 max | – |
| ASTM A234 WP5 | 0.15 max | 0.30-0.60 | 0.040 max | 0.030 max | 0.50 max | 4.0-6.0 | 0.45-0.65 | 0.50 max | – |
| ASTM A234 WP9 | 0.15 max | 0.30-0.60 | 0.030 max | 0.030 max | 0.50-1.00 | 8.0-10.0 | 0.90-1.10 | 0.40 max | – |
| ASTM A234 WP11 | 0.05-0.15 | 0.30-0.60 | 0.030 max | 0.030 max | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | 0.50 max | – |
| ASTM A234 WP22 | 0.05-0.15 | 0.30-0.60 | 0.040 max | 0.040 max | 0.50 max | 1.90-2.60 | 0.87-1.13 | 0.50 max | – |
| ASTM A234 WP91 | 0.08-0.12 | 0.30-0.60 | 0.020 max | 0.010 max | 0.20-0.50 | 8.0-9.5 | 0.85-1.05 | 0.40 max | 0.18-0.25 |
MECHANICAL PROPERTIES OF ALLOY STEEL FORGED PIPE FITTINGS
| Grade | Tensile (ksi) | 0.2% Yield (ksi) | Elongation % | Hardness (HB) |
|---|---|---|---|---|
| ASTM A234 WP1 | 55-80 | 30 min | 22 min | 143 max |
| ASTM A234 WP5 | 60-85 | 30 min | 22 min | 149 max |
| ASTM A234 WP9 | 60-85 | 30 min | 22 min | 149 max |
| ASTM A234 WP11 | 60-85 | 30 min | 22 min | 149 max |
| ASTM A234 WP22 | 60-85 | 30 min | 22 min | 149 max |
| ASTM A234 WP91 | 85-110 | 60 min | 20 min | 250 max |
SPECIFICATION OF ALLOY STEEL FORGED FITTINGS
| Grades | F1, F5, F9, F11, F12, F22, F91, F92 |
|---|---|
| Specification | ASTM A182 / ASME SA182 |
| Dimension Standard | ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799 |
| Size | 1/8″ NB to 4″ NB |
| Type | Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type) |
| Rating Pressure | Threaded End – 2000 / 3000/ 6000 LBS. Socket-weld End – 3000 / 6000/ 9000 LBS. |
ALLOY STEEL FORGED FITTINGS EQUIVALENT GRADES
| STANDARD | UNS | EN | DIN | JIS | BS |
|---|---|---|---|---|---|
| ASTM A234 WP1 | K11522 | 1.7335 | 13CrMo4-5 | STPA 23 | BS 3604: 620-440 |
| ASTM A234 WP5 | K41545 | 1.7362 | 10CrMo9-10 | STPA 25 | BS 3604: 621 |
| ASTM A234 WP9 | K81590 | 1.7380 | X12CrMo9-1 | STPA 26 | BS 3604: 625 |
| ASTM A234 WP11 | K11597 | 1.7383 | 13CrMo4-5 | STPA 24 | BS 3604: 620-440 |
| ASTM A234 WP22 | K21590 | 1.7386 | 10CrMo9-10 | STPA 24 | BS 3604: 622 |
| ASTM A234 WP91 | K91560 | 1.4903 | X10CrMoVNb9-1 | STPA 28 | BS 3604: 660 |
PHYSICAL PROPERTIES OF ALLOY STEEL FORGED FITTINGS
| Property | ASTM A234 WP1/WP11 | ASTM A234 WP5/WP9/WP22 | ASTM A234 WP91 |
|---|---|---|---|
| Density @ Room Temperature | 0.284 lb/in³ (7.85 g/cm³) | 0.284 lb/in³ (7.85 g/cm³) | 0.284 lb/in³ (7.85 g/cm³) |
| Elastic/Young’s Modulus | 29.0 × 10⁶ psi (200 GPa) | 29.0 × 10⁶ psi (200 GPa) | 29.0 × 10⁶ psi (200 GPa) |
| Specific Heat @ 20°C (68°F) | 0.108 Btu/lb/°F (452 J·kg⁻¹·°K⁻¹) | 0.108 Btu/lb/°F (452 J·kg⁻¹·°K⁻¹) | 0.108 Btu/lb/°F (452 J·kg⁻¹·°K⁻¹) |
| Melting Point | 2600°F to 2750°F (1425°C to 1510°C) | 2550°F to 2700°F (1400°C to 1480°C) | 2600°F to 2750°F (1425°C to 1510°C) |
| Thermal Conductivity @ 20°C (68°F) | 285 Btu·in/h·ft²·°F (41.2 W·m⁻¹·°K⁻¹) | 280 Btu·in/h·ft²·°F (40.5 W·m⁻¹·°K⁻¹) | 260 Btu·in/h·ft²·°F (37.6 W·m⁻¹·°K⁻¹) |
| Electrical Resistivity @ 20°C (68°F) | 0.160 μΩ·m | 0.170 μΩ·m | 0.180 μΩ·m |
| Mean Coefficient of Thermal Expansion (20-100°C) | 6.5 × 10⁻⁶ °K⁻¹ | 6.0 × 10⁻⁶ °K⁻¹ | 6.0 × 10⁻⁶ °K⁻¹ |
| Maximum Service Temperature | 900°F (480°C) | 1100°F (595°C) | 1200°F (650°C) |
💡 Practical Difference in Use
Use Alloy Steel Forged Pipe Fittings when: high strength, elevated temperature resistance, and pressure-handling capability are required in compact piping systems. → Example: power plants, refineries, petrochemical units, boilers, and pressure systems.
Applications of Alloy Steel Forged Pipe Fittings
Alloy steel forged fittings are designed for extreme pressure and temperature conditions.
- Power & Energy: Boiler and steam lines.
- Oil & Petrochemical: High-pressure process piping.
- Heavy Engineering: Pressure vessels and thermal equipment.
When to Choose Alloy Steel?
Alloy steel is ideal for strength-driven applications.
Choose Alloy Steel Forged Fittings when:
- High temperature and pressure conditions exist
- Resistance to creep and fatigue is critical
- Compact forged connections are required
- Strength is prioritized over corrosion resistance
- Used in power or refinery systems
Usage Guide for Alloy Steel Forged Pipe Fittings
Directional change in compact high-pressure piping.
Choose Socket Weld Elbow when
- 90° direction change is required
- High-pressure or high-temperature service
- Leak-proof welded joint
- Power, refinery, and oil & gas piping
Threaded branch distribution in high-pressure piping systems.
Choose Forged Tee when
- Branch or flow distribution is required
- High mechanical strength is critical
- Thermal and pressure cycling
- Oil & gas and petrochemical plants
Four-way flow distribution in pressure-intensive piping networks.
Choose Cross when
- Multi-directional branching is required
- High-pressure service conditions
- Strong welded or threaded joints
- Refinery and petrochemical plants
Connects two pipes securely in pressure-intensive systems.
Choose Full Coupling when
- Pipe-to-pipe joining is required
- High-pressure or high-temperature service
- Leak-resistant threaded joint
- Industrial and energy piping
Branch outlet for vents, drains, and instrumentation.
Choose Half Coupling when
- Instrument or drain connection is required
- High-pressure service
- Compact forged design
- Refinery and process piping
Securely seals threaded pipe ends in pressure systems.
Choose Cap when
- Pipe termination is required
- Pressure testing or isolation
- High strength and durability
- Industrial and power piping
Allows easy dismantling in high-pressure industrial piping.
Choose Union when
- Frequent inspection or maintenance
- High-pressure or thermal service
- Leak-tight threaded joints
- Power and process plants
Threaded size reduction in compact high-strength piping systems.
Choose Bushing when
- Pipe size transition is required
- Limited installation space
- High mechanical strength is needed
- Industrial process piping
Threaded pipe extension for high-pressure and high-temperature systems.
Choose Nipple when
- Compact threaded connection is required
- High-pressure or high-temperature service
- Strong and durable forged construction
- Power plants and oil & gas piping
Our Forged Pipe Fittings are manufactured using advanced forging processes and undergo extensive quality checks to ensure flawless dimensional accuracy, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.
Throughout the forging and finishing stages, every forged fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our forged fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.
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