ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings Manufacturer & Supplier
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- ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings
WPL6 Carbon Steel Buttweld Fittings, known for their outstanding strength, dimensional precision, and low-temperature resilience. These fittings are primarily used in low-temperature service piping systems and come in a wide range of types such as elbows, tees, reducers, caps, stub ends, and crosses. Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of ASTM A420 Gr. It is manufactured using carbon steel with key alloying elements like manganese, phosphorus, sulfur, and silicon. These fittings exhibit superior mechanical integrity under cryogenic conditions. With a fine-grain structure and excellent notch toughness, these fittings conform to global standards such as ASTM A420 / ASME SA420. Their chemical composition and mechanical properties make them suitable for seamless, welded, and ERW A420 WPL6 carbon steel fittings in critical applications.
Benefits of ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings
ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings provide long-term reliability in extreme environments especially, where low-temperature strength and precision connections are required.
- Low-Temperature Performance: particularly designed to maintain ductility, and impact strength in cryogenic and sub-zero settings.
- Mechanical Properties: Offers high tensile and yield strength, ensuring robust joint integrity in pressure-rated systems.
- Corrosion Resistance: Performs reliably against oxidation and general corrosion, especially when paired with appropriate coatings.
- Dimensional Accuracy and Finish: Manufactured with tight tolerances, smooth inner bores, and clean external finishes to facilitate easy installation and flow consistency.
Specification of ASTM A420 Gr. WPL6 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 A420 Gr. WPL6 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. | C | Mn | P | S | Si |
| ASTM A420 WPL6(1)(2) | 0.3 | 0.60-1.35 | 0.035 | 0.04 | 0.15-0.30 |
| ASTM A420 WPL9 | 0.2 | 0.40-1.06 | 0.03 | 0.03 | – |
| Tensile Requirements Of | ASTM A420 WPL6 Buttweld Pipe Fittings | ASME A420 WPL9 Fittings |
| Tensile Strength minimum (Min.), ksi [MPa] |
60-85[415-585] | 63-88[435-610] |
| Yield Strength minimum (Min.), ksi [MPa] |
35[240] | 46[315] |
| Material | Fttg | Valves | Flg | Pipes | Bolts and Nuts |
|---|---|---|---|---|---|
| Low Temperature Carbon Steel Alloy |
A420 Gr WPL6 | A352 Gr LCB | A350 Gr LF2 | A333 Gr 6 | A320 Gr L7 A194 Gr 7 |
| A420 Gr WPL3 | A352 Gr LC3 | A350 Gr LF3 | A333 Gr 3 |
Carbon Steel Buttweld Fittings Grades We Offer
ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings Manufacturing Standards
| ASME B16.9 ASTM A420 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 A420 Gr. WPL6 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 A420 Gr. WPL6 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 |
Difference Between ASTM A420 Gr. WPL6 and ASTM A234 Gr. WPB Buttweld Fittings
The primary difference between ASTM A420 Gr. WPL6 and ASTM A234 Gr. WPB buttweld fittings lie in their temperature service range and material composition. WPL6 fittings are appropriate for cryogenic and LNG systems, since they are designed for low-temperature applications, and have fine-grain carbon steel and improved impact durability. In contrast, WPB fittings are ideal for ambient to moderate-temperature applications and are typically used in standard pressure piping. Although both meet ASME requirements for buttweld fittings, WPL6 follows ASTM A420, which has more stringent notch toughness and testing requirements than A234.
ASTM A420 Gr. WPL6 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 ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings
ASTM A420 WPL6 Low Temperature Fittings serve as a critical component across industries, where strength and performance under sub-zero conditions are vital. They guarantee dependable pipe connections in both onshore and offshore pipelines, in the oil and gas industry. The petrochemical and gas processing industries utilise these fittings in liquefied fuel transport and storage units. In cryogenic plants, they manage fluid transport at extremely low temperatures. Additionally, power generation units, and pharmaceutical production lines benefit from their pressure handling and material stability. It ensures operational safety and efficiency across process pipelines.
Why Choose Midland Alloys Inc. for ASTM A420 Gr. WPL6 Fittings
Our ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings are carefully manufactured using quality systems that are certified by ISO 9001 and ASTM A420/ASME SA420. Depending on the requirements of your project, we provide complete customisation options, such as cut-to-length fittings, unique end finishes, specific wall thicknesses, and surface treatments. With a proven export footprint across Gulf countries, Europe, Southeast Asia and Africa, we deliver both small-batch and bulk orders with equal proficiency. Each fitting is subjected to stringent internal testing, external inspections, and is provided with Mill Test Certificates (MTCs) confirming to its adherence to mechanical and chemical standards.
FAQs – ASTM A420 Gr. WPL6 Carbon Steel Buttweld Fittings
Yes, ASTM A420 Gr. WPL6 buttweld fittings are available in both seamless and welded configurations, offering flexibility based on pressure requirements, dimensional specifications, and cost considerations.
WPL6 fittings may be used in sour service environments when manufactured to meet additional requirements such as NACE MR0175/ISO 15156 compliance, which prevents sulfide stress cracking under acidic conditions.
WPL6 buttweld fittings are typically available from ½” to 48” in diameter, with customization available for non-standard sizes and wall thicknesses upon request.
