ASTM A860 WPHY‑Grade Carbon Steel Buttweld Fittings Manufacturer & Supplier
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- ASTM A860 WPHY‑Grade Carbon Steel Buttweld Fittings
Midland Alloys is a leading ASTM A860 WPHY60 Fittings Manufacturer in India, offering fittings in grades WPHY42, WPHY52, WPHY60, WPHY65, and WPHY70. These are high-strength, low-alloy steel fittings made for critical piping systems that demand durability and performance. The ASTM A860 standard covers both seamless and welded fittings, built to ASME B16.9, B16.28, and MSS-SP-75 dimensions. It comes in several types, such as elbows, tees, reducers, stub ends, crosses, caps, and bends, including long radius, short radius, and engineered forms. Whether you need wrought, seamless, or welded options, our WPHY 42 to 70 butt weld fittings meet the tough demands of industries like oil & gas, chemical, and offshore infrastructure.
Key Benefits of WPHY-Grade Buttweld Fittings
WPHY-grade fittings offer unmatched strength and reliability for tough piping applications.
- WPHY 60 pipe fittings are built for high pressure and have ~60 ksi yield strength.
- Superior strength and durability even in corrosive or abrasive environments.
- Welded ends create tight, leak-proof joints with high safety margins.
- Smooth internal surfaces allow better flow and less turbulence.
- Compact shapes offer a space-saving fit in dense piping networks.
- Known for excellent toughness and weldability in structural use.
- Withstand stress and shock in harsh field conditions without cracking.
Specification of ASTM A860 Gr. WPHY 42/52/60/65/70 Carbon Steel buttweld fittings
Seamless Butt Weld Fittings: 1/2" - 10"
Welded Butt Weld Fittings: 1/2" - 48"
ASTM A234/ ASME SA234
Forge, Cast, Push, Press, etc.
90 Deg. Elbow, 45 Degree Elbow, LR/SR Elbow, Reducers, Tee, Cross, Bends, U bend, 180 Deg Bend, End Cap, Lap-joint Stub End
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
Plain End, Beveled End, Treaded
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Seamless / Welded / Fabricated
Types of ASTM A860 Gr. WPHY 42/52/60/65/70 Carbon Steel buttweld fittings
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Elbow (90°, 45°, Long Radius, Short Radius)Modifies the pipeline's flow direction at predetermined angles with regulated radii.
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Tee (Equal Tee, Reducing Tee)Adjusts the size of the main and branch lines to split or combine flow at 90° intersections.
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A reducer (eccentric or concentric)joins pipes with varying diameters while preserving flow offset or alignment.
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stub endIn non-permanent piping configurations, the stub end (long or short) connects to lap joint flanges for disassembly.
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Return Bends (180° bend)Redirects flow by 180 degrees, allowing the pipeline to reverse direction.
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Cross (Equal Cross, Reducing Cross)Provides multidirectional flow by joining four pipes at right angles.
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pipe capTo stop flow or pressure, an end cap also known as a pipe cap, seals the pipe's open end.
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Carbon Steel Lateral Teeused in piping systems to branch a pipeline at a 45° angle, ensuring smoother flow with reduced turbulence.
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Carbon steel Equal CrossA Carbon Steel Equal Cross is a pipe fitting used to connect four pipes of the same diameter at right angles.
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Carbon Steel Long Stub EndA Carbon Steel Long Stub End is used with lap joint flanges to allow easy disassembly of piping systems for inspection and maintenance.
Technical Details & Delivery Condition
| Gr. | Mn | P | S | Si | Ni | Cr | Mo | Cu | Ti | V | Cb | Al |
| ASTM A860 WPHY 42 Fittings | 0.20 | 1.00-1.45 | 0.03 | 0.01 | 0.15-0.40 | 0.50 | 0.30 | 0.25 | 0.35 | 0.05 | 0.10 | 0.04 |
| ASTM A860 WPHY Carbon Steel Buttweld Fittings | ||
|---|---|---|
| Grade | Yield Strength (Min) | Tensile Strength (Min) |
| WPHY 42 | 42,000 psi (290 MPa) | 60,000 psi (415 MPa) |
| WPHY 52 | 52,000 psi (360 MPa) | 66,000 psi (455 MPa) |
| WPHY 60 | 60,000 psi (415 MPa) | 75,000 psi (517 MPa) |
| WPHY 65 | 65,000 psi (448 MPa) | 77,000 psi (531 MPa) |
| WPHY 70 | 70,000 psi (483 MPa) | 82,000 psi (565 MPa) |
Carbon Steel Buttweld Fittings Grades We Offer
ASTM A860 Gr. WPHY 42/52/60/65/70 Carbon Steel Buttweld Fittings Manufacturing Standards
| ASME B16.9 ASTM A860 Pipe Fittings | Factory-Made Wrought Buttwelding Fittings | Long Radius Elbows, Long Radius Reducing Elbows, Long Radius Returns, Short Radius Elbows, Short Radius 180-deg Rerurns, 3D elbows, Straight Tees, Straight Crosses, Reducing Outlet Tees, Reducing Outlet Crosses, Lap Joint Stub Ends, Caps, Reducers |
| ASME B16.28 | Short Radius Elbows, Short Radius 180-deg Returns | |
| MSS SP43 | Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications | Long Radius Elbows, Straight and Reducing-on-the-Outlet Tees, Lap Joint Stub ends, caps, long radius 180 Degree returns, concentric reducers, eccentric reducers |
| Mss SP75 | Long Radius Elbows, 3R elbows, straight tees, reducing outlet tees, caps, reducers |
Sizing Table of ASTM A860 Gr. WPHY 42/52/60/65/70 Carbon Steel Buttweld Fittings
| Products | Sizes |
| CS Stub Ends | 1/2″ NB to 14″ NB |
| CS Cups | 1/2″ NB to 14″ NB |
| CS Socket Weld | Upto 2″ NB |
| CS Tees | 1″ NB to 14″ NB |
| CS Nipples | Upto 4″ |
| CS Couplings | Upto 4″NB |
| CS Reducers | 1″ NB to 14″ NB |
| CS Elbow | 1/2″ NB to 14″ NB |
High Temp of ASTM A860 Gr. WPHY 42/52/60/65/70 Carbon Steel Fittings Pressure Rating
| Pressure-Temperature Ratings for ASME B16.9 Carbon Steel Buttweld Pipe Fittings (psig) | |||||
|---|---|---|---|---|---|
| Temperature Ratings | Pressure Class | ||||
| 150 | 300 | ||||
| 1/4 – 1 Inches | 1 1/4 – 2 Inches | 2 1/2 – 3 Inches | |||
| (oF) | (oC) | ||||
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | – | 935 | 750 | 560 |
| 450 | 232 | – | 725 | 600 | 475 |
| 500 | 260 | – | 510 | 450 | 385 |
| 550 | 288 | – | 300 | 300 | 300 |
Grades & Standards Comparison ERW A860 WPHY60 Buttweld Fittings
Each WPHY grade under ASTM A860 is designed for specific strength levels and operating conditions. Below is a breakdown of individual grades, their properties, and their ideal applications:
- WPHY 42: Entry-level grade with a minimum yield strength of 42 ksi (≈290 MPa) and tensile strength around 60 ksi (≈415 MPa). Suitable for low to medium pressure systems and general pipeline construction.
- WPHY 52: Yield strength of 52 ksi (≈360 MPa) and tensile strength of about 66 ksi (≈455 MPa). Provides more structural integrity than WPHY 42 and is commonly used in onshore flow lines and water pipelines.
- WPHY 60: Yield strength of 60 ksi (≈415 MPa) and tensile strength around 75 ksi. Offers greater resistance to internal pressure and bending.
- WPHY 65: Yield strength of 65 ksi and tensile strength of 77 ksi. Used in offshore platforms, refineries, and structural piping systems where added load capacity is required.
- WPHY 70: Strongest grade with 70 ksi yield and up to 82 ksi tensile strength. Ideal for critical, high-risk installations such as deep-sea oil extraction, sour service pipelines, and extreme pressure/temperature facilities.
The key differences between these grades lie in their strength levels, pressure ratings, and service environments. As the grade number increases, so does the strength and resistance to deformation, making higher grades more suitable for demanding and corrosive conditions.
ASTM A860 WPHY Carbon Steel Buttweld Fittings Are Manufactured
Pipe
Cutting
Forming
Sizing
Heat Treatment
Pickling
Beveling
Polishing
Sand Blasting
Elbow
Inspection
Analytic
Marking
Packing & Shipping
Applications of A860 WPHY Fittings
ASTM A860 WPHY buttweld fittings are widely used in pipelines and process plants that move high-pressure or corrosive fluids. The ASTM A860 WPHY52 Fittings for Oil & Gas connect pipelines for crude, natural gas, or refined products. These fittings are used in both upstream and downstream systems, including gathering lines, trunk pipelines, and distribution networks. In chemical plants, they handle harsh fluids and gases safely, often found in process piping systems that require strength and leak resistance. In power plants, WPHY fittings are used in high-temperature, high-pressure steam lines, cooling systems, and water transport pipelines, supporting both conventional and nuclear generation operations. Offshore rigs and subsea infrastructure rely on these fittings for structural integrity and corrosion resistance in deep-water applications. They are essential in risers, manifolds, and export pipelines. These fittings are also used in sour service environments (H₂S), where materials must resist sulfide stress cracking.
Why Choose Midland Alloys Inc. for WPHY Buttweld Fittings
At Midland Alloys, we manufacture and export WPHY buttweld fittings across all major grades. Our experience ensures quality you can trust. We maintain strict compliance with international standards, including ISO 9001:2015, PED 2014/68/EU and EN 10204 3.1/3.2 Mill Test Certificates for full material traceability. Our team also works closely with top third-party inspection (TPI) agencies like TÜV, BV, SGS, and DNV to meet your exact project specifications and documentation needs. We support custom sizes, pressure classes, and export-ready documentation, with fast delivery to meet urgent project needs. Whether you’re looking for WPHY 42, 52, 60, 65, or 70 butt weld fittings, we’ve got the stock and service to back you up.
FAQs – ASTM A860 WPHY Buttweld Fittings
Pressure depends on size and wall thickness, but higher grades like WPHY 60–70 suit high-pressure service.
Grades WPHY60 and above are typically used in sour (H₂S) service, depending on the project specs.
Fittings come in sizes from ½” to 48″, depending on type and schedule.
Yes. Heat treatment (normalize, quench, temper) is required as per ASTM A960 and grade type.
Absolutely. Midland Alloys offers WPHY 60 pipe fittings manufacturer support, with ready stock and export packaging.
