Alloy Steel Fittings Manufacturer & ASTM A234 Material Supplier in Mumbai
Alloy steel fittings are important piping materials that are manufactured with the help of chromium, molybdenum, and other alloying elements to make them stronger, corrosive and high-temperature resistant. Alloy Steel Fittings are critical in regulating flow properties in piping systems that are applied in challenging industrial settings.
Alloy Steel Pipe Fittings are mainly made of iron and carbon with additional alloying elements which enhance the resistance to oxidation, durability and mechanical strength. The greater the alloy content, the greater the high-pressure and high-temperature performance.
ASTM A234 specification includes alloy and carbon steel buttweld pipe fittings that are used in moderate and high-temperature service. These fittings can be made in seamless and welded construction and they are commonly used in pressure piping systems and fabrication industries.
Alloy Steel Buttweld Fittings are among the most commonly used fittings due to their high strength and leak-proof performance. These fittings are produced by bending metal and welding it to the piping system to give permanent connections.
Alloy Steel Weld Fittings are very durable and are applied in joining different parts of pipelines in industries. These fittings come in a variety of sizes, shapes and specifications to suit the various application needs.
Alloy Steel Elbow is one of the most common types of fittings that are used in piping systems. These are elbows that are used to alter the direction of flow of fluids and gases, and they come in long radius (LR) and short radius (SR) designs.
AISI 4130 Chrome Moly Buttweld Elbow is a low alloy steel fitting that has been engineered with increased chromium and molybdenum content that provides high strength and resistance to corrosion and high temperatures. These elbows may be provided in threaded or welded versions depending on the project needs.
ASTM A234 Alloy Steel Tee has three outlets and is used to divide the flow in various directions. These tees are offered in equal and reducing varieties, which enable effective distribution of flow in piping systems.
For technical queries, pricing, or availability, contact our team for expert assistance and fast quotations.
Types of Alloy Steel Fittings
Alloy Steel Buttweld Fittings
- Elbows (45°, 90°, 180°)
- Tees
- Reducers
- Stub Ends
- Caps
Alloy Steel Forged Fittings
- Socket Weld Fittings
- Threaded Fittings
- Couplings
- Unions
Alloy Steel Pipe Fittings Specification
| Category | Specification Details |
|---|---|
| Grades | Chrome Moly Grades: P1, P5, P9, P11, P22, P91, AISI 4130, AISI 4140 |
| Specification | ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 ASTM A182 F1, F5, F9, F11, F22, F91 |
| Types | Seamless / Welded / Forged / Fabricated |
| Bending Radius | R = 1D, 2D, 3D, 5D, 6D, 8D, 10D or custom |
| Size Range | ½″ NB to 48″ NB in SCH 10S, 40S, 80S, 160, XXS |
| Standards | ASME B16.9, ASME B16.28, MSS-SP-43 |
We maintain a wide stock of ASTM A234 Alloy Steel Pipe Fittings, including tees, reducers, elbows, and end caps for pipeline applications.
Alloy Steel Pipe Fittings Chemical Composition (ASTM A234)
| Grade | C | Mn | Si | Cr | Mo | S (max) | P (max) |
|---|---|---|---|---|---|---|---|
| WP1 | ≤0.28 | 0.30–0.90 | 0.10–0.50 | — | 0.44–0.65 | 0.045 | 0.045 |
| WP5 Cl1/Cl3 | ≤0.15 | 0.30–0.60 | ≤0.50 | 4.0–6.0 | 0.44–0.65 | 0.030 | 0.040 |
| WP9 Cl1/Cl3 | ≤0.15 | 0.30–0.60 | 0.25–1.00 | 8.0–10.0 | 0.90–1.10 | 0.030 | 0.030 |
| WP11 Cl1 | 0.05–0.15 | 0.30–0.60 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | 0.030 | 0.030 |
| WP11 Cl2/Cl3 | 0.05–0.20 | 0.30–0.80 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | 0.040 | 0.040 |
| WP22 Cl1/Cl3 | 0.05–0.15 | 0.30–0.60 | ≤0.50 | 1.90–2.60 | 0.87–1.13 | 0.040 | 0.040 |
| WP91 | 0.08–0.12 | 0.30–0.60 | 0.20–0.50 | 8.0–9.5 | 0.85–1.05 | 0.010 | 0.020 |
| WP92 | 0.07–0.13 | 0.30–0.60 | ≤0.50 | 8.5–9.5 | 0.30–0.60 | 0.010 | 0.020 |
Alloy Steel Pipe Fittings Mechanical Properties (ASTM A234)
| Grade | Yield Strength min. | Tensile Strength min. | Elongation (Long) min. | Elongation (Trans) min. |
|---|---|---|---|---|
| WP1 | 205 MPa [30 ksi] | 380–550 MPa [55–80 ksi] | 20% | 13% |
| WP5 Cl1 | 205 MPa [30 ksi] | 415 MPa [60 ksi] | 22% | 14% |
| WP5 Cl3 | 310 MPa [45 ksi] | 520 MPa [75 ksi] | 22% | 14% |
| WP9 Cl1 | 205 MPa [30 ksi] | 415 MPa [60 ksi] | 22% | 14% |
| WP11 Cl1 | 205 MPa [30 ksi] | 415 MPa [60 ksi] | 22% | 14% |
| WP11 Cl2 | 275 MPa [40 ksi] | 485 MPa [70 ksi] | 22% | 14% |
| WP11 Cl3 | 310 MPa [45 ksi] | 520 MPa [75 ksi] | 22% | 14% |
| WP22 Cl1 | 205 MPa [30 ksi] | 415 MPa [60 ksi] | 22% | 14% |
| WP22 Cl3 | 310 MPa [45 ksi] | 520 MPa [75 ksi] | 22% | 14% |
| WP91 | 415 MPa [60 ksi] | 585 MPa [85 ksi] | 20% | — |
Alloy Steel Buttweld Fittings Weight Chart
| NPS | 10S Schedule | 40S Schedule | 80S Schedule | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Buttweld 45° Elbow | Buttweld 90° Elbow | B16.9 Buttweld Equal Tee | Buttweld 45° Elbows | Buttweld 90° Elbows | B16.9 Buttweld Equal Tee | Buttweld 45° Elbow | Buttweld 90° Elbow | ASME B16.9 Buttweld Equal Tee | |
| 8 | 0.01 | 0.02 | 0.03 | 0.02 | 0.03 | 0.06 | 0.03 | 0.04 | 0.07 |
| 10 | 0.02 | 0.03 | 0.05 | 0.02 | 0.03 | 0.03 | 0.04 | 0.06 | 0.09 |
| 15 | 0.03 | 0.06 | 0.09 | 0.04 | 0.08 | 0.10 | 0.05 | 0.10 | 0.14 |
| 20 | 0.03 | 0.07 | 0.13 | 0.04 | 0.08 | 0.17 | 0.05 | 0.11 | 0.20 |
| 25 | 0.08 | 0.14 | 0.28 | 0.11 | 0.15 | 0.29 | 0.14 | 0.22 | 0.38 |
| 32 | 0.11 | 0.23 | 0.49 | 0.17 | 0.26 | 0.59 | 0.23 | 0.40 | 0.68 |
| 40 | 0.17 | 0.30 | 0.68 | 0.23 | 0.40 | 0.86 | 0.29 | 0.51 | 1.02 |
| 50 | 0.25 | 0.50 | 0.85 | 0.4 | 0.70 | 1.28 | 0.59 | 0.91 | 1.59 |
| 65 | 0.48 | 0.85 | 1.41 | 0.77 | 1.40 | 2.19 | 0.99 | 1.81 | 3.13 |
| 80 | 0.63 | 1.25 | 1.77 | 1.08 | 2.20 | 3.31 | 1.50 | 2.97 | 4.45 |
| 90 | 0.75 | 1.70 | 2.67 | 1.42 | 2.83 | 4.08 | 2.00 | 4.00 | 5.44 |
| 100 | 1.08 | 2.10 | 3.46 | 2.09 | 4.47 | 5.27 | 2.81 | 6.18 | 7.71 |
| 150 | 2.72 | 5.45 | 8.07 | 5.44 | 10.89 | 10.99 | 8.16 | 16.32 | 13.61 |
| 200 | 5.33 | 10.20 | 15.65 | 10.77 | 21.54 | 20.91 | 16.56 | 33.11 | 28.12 |
| 250 | 9.75 | 18.15 | 26.46 | 19.27 | 38.56 | 35.38 | 25.86 | 51.71 | 49.90 |
| 300 | 13.62 | 25.80 | 39.46 | 29.71 | 59.42 | 62.14 | 39.69 | 79.38 | 83.91 |
Alloy Steel Elbow Dimension
| NPS | AS 180° Return Long Radius | AS 90° Elbows | AS 45° Elbows | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | XS | Long Radius | Short Radius | 3R | Long Radius | 3R | ||||||||
| Standard | XS | SCH. 160 | XXS | Standard | XS | Standard | XS | Standard | XS | |||||
| ½ | .35 | * | .18 | .25 | * | * | * | * | * | * | .09 | .19 | * | * |
| ¾ | .40 | .65 | .19 | .25 | * | * | * | * | * | * | .09 | .19 | * | * |
| 1 | .75 | 1.00 | .40 | .50 | .60 | .75 | .25 | * | * | * | 0.25 | .31 | * | * |
| 1¼ | 1.25 | 1.75 | .60 | .90 | 1.00 | 1.38 | .4 | * | * | * | 0.38 | .50 | * | * |
| 1½ | 1.88 | 2.39 | .90 | 1.15 | 1.80 | 1.50 | .56 | .75 | * | * | .40 | .69 | * | * |
| 2 | 3.23 | 4.40 | 1.60 | 2.20 | 3.25 | 3.50 | 1.00 | 1.50 | 3.00 | 4.00 | .81 | 1.19 | 1.5 | 2.1 |
| 2½ | 6.50 | 8.00 | 3.25 | 4.00 | 5.13 | 7.00 | 2.13 | 2.80 | 6.00 | 8.00 | 1.75 | 2.13 | 3.00 | 4.00 |
| 3 | 10.25 | 13.00 | 5.00 | 6.50 | 8.50 | 11.0 | 3.00 | 4.25 | 10.0 | 13.0 | 2.63 | 3.50 | 5.00 | 7.00 |
| 3½ | 13.00 | 16.75 | 6.75 | 8.35 | * | 16.0 | 4.50 | 6.00 | 13.0 | 18.0 | 3.50 | 4.50 | 7.00 | 9.00 |
| 4 | 18.5 | 25.0 | 9.00 | 13.5 | 18.0 | 20.0 | 6.25 | 8.50 | 18.0 | 25.0 | 4.50 | 6.10 | 9.00 | 13.0 |
| 5 | 30.0 | 44.0 | 15.0 | 22.0 | 32.0 | 36.0 | 9.60 | 14.0 | 29.0 | 43.0 | 7.50 | 10.7 | 15.0 | 22.0 |
| 6 | 50.0 | 70.0 | 24.5 | 35.0 | 57.0 | 65.0 | 18.0 | 23.0 | 45.0 | 70.0 | 12.0 | 17.5 | 23.0 | 35.0 |
| 8 | 95.0 | 142 | 50.0 | 71.0 | 120 | 118 | 34.0 | 47.5 | 90.0 | 140 | 23.0 | 35.0 | 45.0 | 70.0 |
| 10 | 117 | 215 | 88.0 | 107 | 260 | * | 58.0 | 70.0 | 159 | 218 | 43.0 | 53.0 | 80.0 | 109 |
| 12 | 230 | 320 | 125 | 160 | 450 | * | 80.0 | 104 | 233 | 310 | 62.0 | 84.0 | 117 | 155 |
| 14 | 325 | 400 | 160 | 205 | 572 | * | 105 | 140 | 298 | 400 | 80.0 | 100 | 149 | 200 |
| 16 | 412 | 550 | 206 | 276 | * | * | 132 | 174 | 390 | 520 | 100 | 135 | 195 | 260 |
| 18 | 510 | 690 | 260 | 340 | * | * | 167 | 219 | 495 | 660 | 126 | 167 | 248 | 330 |
| 20 | 640 | 830 | 320 | 420 | * | * | 210 | 275 | 610 | 810 | 160 | 206 | 305 | 405 |
| 22 | 787 | 1040 | 394 | 520 | * | * | * | * | 735 | 980 | 197 | 260 | 368 | 490 |
| 24 | 890 | 1200 | 460 | 600 | * | * | 298 | 392 | 875 | 1170 | 238 | 300 | 438 | 585 |
| 26 | – | – | 550 | 729 | * | – | – | – | 1030 | 1370 | 275 | 365 | 515 | 685 |
| 30 | – | – | 734 | 975 | – | – | – | – | 1370 | 1830 | 367 | 488 | 685 | 915 |
| 36 | – | – | 1062 | 1412 | – | – | – | – | 1970 | 2630 | 531 | 706 | 985 | 1315 |
ASME B16.9 Chrome Moly Tee Dimensions
| NPS of Equal Tee | Center-to-End (C) Run | (M) Outlet | O.D at bevel |
|---|---|---|---|
| 1/2″ | 25 | 25 | 21.3 |
| 3/4″ | 29 | 29 | 26.7 |
| 1″ | 38 | 38 | 33.4 |
| 1 1/4″ | 48 | 48 | 42.2 |
| 1 1/2″ | 57 | 57 | 48.3 |
| 2″ | 64 | 64 | 60.3 |
| 2 1/2″ | 76 | 76 | 73.0 |
| 3″ | 86 | 86 | 88.9 |
| 3 1/2″ | 95 | 95 | 101.6 |
| 4″ | 105 | 105 | 114.3 |
| 5″ | 124 | 124 | 141.3 |
| 6″ | 143 | 143 | 168.3 |
| 8″ | 178 | 178 | 219.1 |
| 10″ | 216 | 216 | 273.0 |
| 12″ | 254 | 254 | 323.8 |
| 14″ | 279 | 279 | 355.6 |
| 16″ | 305 | 305 | 406.4 |
| 18″ | 343 | 343 | 457.0 |
| 20″ | 381 | 381 | 508.0 |
| 22″ | 419 | 419 | 559.0 |
| 24″ | 432 | 432 | 610.0 |
Pressure Rating of Low Alloy Steel Fittings (Working Pressure in PSI)
Pressure ratings for Alloy Steel Pipe Fittings depend on material grade, wall thickness (schedule), and applicable ASME standards. These fittings are designed to handle high-pressure applications in oil & gas, power plants, and petrochemical industries.
| Nominal Pipe Size | Wall Thickness | -20° to 650°F | 700°F | 750°F | 800°F |
|---|---|---|---|---|---|
| 1/2 | 0.109 | 1695 | 1621 | 1463 | 1220 |
| 3/4 | 0.113 | 1455 | 1392 | 1256 | 1046 |
| 1 | 0.133 | 1575 | 1506 | 1359 | 1134 |
| 1 1/4 | 0.140 | 1065 | 1019 | 919 | 766 |
| 1 1/2 | 0.145 | 1005 | 960 | 867 | 723 |
| 2 | 0.154 | 900 | 881 | 777 | 648 |
| 2 1/2 | 0.203 | 1215 | 1162 | 1048 | 874 |
| 3 | 0.216 | 1095 | 1047 | 945 | 788 |
| 3 1/2 | 0.226 | 1020 | 975 | 880 | 734 |
| 4 | 0.237 | 975 | 932 | 841 | 702 |
| 5 | 0.258 | 885 | 846 | 764 | 637 |
| 6 | 0.280 | 840 | 803 | 725 | 604 |
| 8 | 0.322 | 765 | 731 | 660 | 550 |
| 10 | 0.365 | 720 | 688 | 621 | 518 |
| 12 | 0.375 | 630 | 602 | 543 | 453 |
| 14 | 0.375 | 570 | 545 | 492 | 410 |
| 16 | 0.375 | 495 | 473 | 427 | 356 |
| 18 | 0.375 | 450 | 430 | 388 | 354 |
| 20 | 0.375 | 405 | 387 | 349 | 291 |
| 24 | 0.375 | 330 | 315 | 284 | 237 |
| 30 | 0.375 | 265 | 254 | 229 | 190 |
| 36 | 0.375 | 220 | 198 | 178 | 148 |
| 42 | 0.375 | 189 | 181 | 163 | 136 |
| 48 | 0.375 | 165 | 158 | 143 | 118 |
Alloy Steel Pipe Fittings Price List
| Description | Per Unit (INR) |
|---|---|
| AS PIPE FITTINGS : SCH60, SA182 GR.WP9 DN400, 45 DEGREE ELBOW (LR) | 392 |
| AS FITTINGS : DN 300, EQUAL TEE, SCH XS, SA182GR.WP9 | 383 |
| BUTTWELD FITTINGS AS : DN 100, EQUAL TEE, SCH XS/80, SA182 GR.WP11 | 216 |
| AS PIPE FITTINGS : DN 250, EQUAL TEE, SCH XS, SA182GR.WP9 | 397 |
| AS FITTINGS : DN 150, 90 DEGREE ELBOW (LR), SCH 120, SA182 GR.WP9 | 533 |
Applications of Alloy Steel Pipe Fittings
Alloy Steel Pipe Fittings are widely used in:
- Oil & Gas Industry: upstream, midstream, and downstream pipelines
- Petrochemical Plants: process piping and heat exchanger systems
- Power Generation Plants: boiler headers, steam lines, turbine piping
- Refineries: high-pressure and high-temperature operations
- Chemical Processing Units: corrosion-resistant piping systems
- Aerospace & Aviation: high-performance structural and fluid systems
- Marine & Shipbuilding: offshore and subsea piping applications
ASTM A234 vs ASTM A182 — What Is the Difference?
ASTM A234 covers wrought alloy and carbon steel buttweld pipe fittings for moderate and high-temperature service, typically used in welded piping systems from ½″ to 48″ NB.
ASTM A182 covers forged alloy steel fittings used in socket weld and threaded connections, generally for smaller pipe sizes up to 4″ NB in high-pressure applications.
Amardeep Steel Centre supplies both ASTM A234 buttweld fittings and ASTM A182 forged fittings with Mill Test Certificates (EN 10204 3.1) and third-party inspection.
Certifications & Mill Test Certificates
All Alloy Steel Pipe Fittings are supplied with Mill Test Certificates (MTC) as per EN 10204 / 3.1.
Third-party inspection is available from:
- Bureau Veritas
- SGS
- TUV
- Lloyd’s Register
Certifications: ISO 9001:2015 | PED Approved | IBR Approved
Testing Available: Hydrostatic Test, Ultrasonic Test (UT), Radiography (RT), PMI, Hardness Testing, Magnetic Particle (MT), Liquid Penetrant (PT)
Need alloy steel fittings for a specific project? Our technical team responds within 24 hours with material certificates and competitive pricing.
Need alloy steel fittings for a specific project? Our technical team responds within 24 hours with material certificates and competitive pricing.
REQUEST A QUOTE FOR ALLOY STEEL PIPE FITTINGSWhy Choose Amardeep Steel Centre for Alloy Steel Pipe Fittings?
- ISO 9001:2015 Certified — quality management verified by third party
- 25+ years supplying alloy steel fittings to oil & gas, power, and petrochemical projects
- Exported to 50+ countries across 6 continents — USA, UAE, Saudi Arabia, Germany, Australia and more
- Ready stock in Mumbai — immediate dispatch with MTC EN 10204/3.1 documentation
- Full range from single source — buttweld, forged fittings, and flanges in all ASTM A234/A182 grades
- Third-party inspection by Bureau Veritas, SGS, TUV, or Lloyd’s Register on request
Related Products
- Alloy Steel Pipes & Tubes
- Alloy Steel Flanges
- Alloy Steel Forged Fittings
- Alloy Steel Buttweld Fittings
- Alloy Steel Fasteners
Frequently Asked Questions - Alloy Steel Fittings
What are alloy steel fittings?
Alloy steel fittings are piping components made from alloy steel used to connect pipes and control fluid flow in high-pressure, high-temperature systems.
What is ASTM A234 in alloy steel fittings?
ASTM A234 is the standard specification for alloy and carbon steel pipe fittings used in moderate and high-temperature services.
What types of alloy steel pipe fittings are available?
Common types include buttweld fittings (elbows, tees, reducers, caps, stub ends) and forged fittings (socket weld and threaded couplings, unions).
Where are alloy steel fittings used?
Oil & gas, petrochemical, power generation, and refinery industries are primary users.
What standards do alloy steel fittings follow?
ASME B16.9, ASME B16.11, ASME B16.5, MSS-SP-75, and ASTM A234 / ASTM A182.
What heat treatment is required for ASTM A234 alloy steel fittings?
ASTM A234 grades WP5, WP9, WP11, WP22, and WP91 are furnished in full-annealed, isothermal-annealed, or normalized-and-tempered condition. This restores toughness and prevents cracking caused by rapid cooling after the forming process.
What is the difference between Long Radius and Short Radius alloy steel elbows?
Long Radius (LR) elbows have a centre-to-end radius equal to 1.5× the nominal pipe diameter — preferred where low pressure drop is critical. Short Radius (SR) elbows have a radius equal to 1× the nominal pipe diameter — used where space is limited. Amardeep Steel supplies both in all ASTM A234 grades.
Do you supply Mill Test Certificates (MTC) with alloy steel pipe fittings?
Yes. All alloy steel pipe fittings are supplied with Mill Test Certificates as per EN 10204 / 3.1. Third-party inspection reports by Bureau Veritas, SGS, TUV, or Lloyd’s Register are available on request.
