ASTM A105 Carbon Steel Buttweld Fittings Manufacturer & Supplier
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Midland Alloys Inc. is a trusted Indian manufacturer and global supplier of ASTM A105 Carbon Steel Buttweld Fittings, known for delivering precise and reliable piping solutions to critical industries. These fittings are designed for seamless and welded pipe systems, offering components such as elbows, tees, reducers, and stub ends in various configurations. Manufactured from forged carbon steel, ASTM A105 fittings are primarily composed of carbon (0.35% max), manganese (0.6–1.05%), phosphorus, sulfur, and silicon, providing superior mechanical strength. These fittings are appropriate for high-pressure applications as they meet ASME B16.9, ASTM A105, and ANSI standards. Oil and gas, petrochemical, and power production systems use A105 carbon steel’s for its exceptional performance in stress-bearing applications due to its consistent grain structure.
Benefits of ASTM A105 Carbon Steel Buttweld Fittings
ASTM A105 cs Buttweld Fittings are preferred in numerous industries for their strength, adaptability, and performance across varied environments. These fittings provide consistent and secure connections that enhance pipeline integrity.
- High Strength and Durability: These fittings offer long-lasting performance in demanding systems as they are made to handle significant mechanical stress.
- Weldability: Superior weldability allows smooth pipe integration without sacrificing structural integrity.
- Temperature and Pressure Resistance: Suitable for high-pressure and moderate-temperature systems, including steam and hydraulic lines.
- Corrosion Resistance: Offers protection in mildly corrosive environments, extending service life in utility and industrial systems.
- Easy Installation: These fittings are made with standard specifications, including the A105 Carbon Steel Elbow specifications which guarantee a simple and speedy installation.
Specification of ASTM A105 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 A105 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 A105 Carbon Steel Buttweld Fittings Manufacturing Standards
| ASME B16.9 ASTM A105 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 A105 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 A105 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 A105 Carbon Steel Buttweld Fittings and ASTM A234 Gr. WPB Carbon Steel Buttweld Fittings
While both ASTM A105 and ASTM A234 Gr. WPB fittings are used in carbon steel piping systems, they differ in manufacturing processes and applications. The forged nature of ASTM A105 fittings makes them appropriate for high-pressure, smaller-diameter systems. On the other hand, ASTM A234 Gr. WPB fittings are composed of wrought carbon steel, and are usually used for butt-welded pipe systems, that demand more intricate geometries and greater sizes. Additionally, A105 fittings are mainly designed for ambient to moderate temperature services, whereas A234 WPB offers better performance under high-temperature operations, due to its heat-treated nature.
ASTM A105 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 A105 Carbon Steel Buttweld Fittings
A wide range of industries employ seamless ASTM A105 buttweld fittings because of its dimensional accuracy and structural dependability. These fittings link pipelines in distribution networks, offshore platforms, and refineries in the oil and gas industry. Power plant A105 pipe fittings are used in cooling and high-pressure steam systems. The petrochemical industry uses them for chemical transport and process pipelines. Additional applications include shipbuilding, food processing units, water treatment plants, and automotive and hydraulic systems, where robust, leak-proof connections are essential.
Why Choose Midland Alloys Inc. for ASTM A105 Carbon Steel Buttweld Fittings?
Midland Alloys Inc. is a leading Indian manufacturer and exporter of ASTM A105 Carbon Steel Buttweld Fittings, committed to precision engineering and global standards like ASTM B564, ASME B16.9, and ISO 9001:2015. We offer customized fittings with varied schedules, end finishes, and surface treatments to suit project needs. We ensure on-time delivery, guaranteed quality, and dependable service, due to our strong worldwide supply network that spans the Gulf, Europe, Africa and Southeast Asia. We are a reliable partner for long-term supply needs because all fittings go through internal testing, mill certification, and third-party inspections.
FAQs – ASTM A105 Carbon Steel Buttweld Fittings
ASTM A105 Carbon Steel Buttweld Fittings typically conform to Class 3000, 6000, and 9000 pressure ratings depending on the design and wall thickness
No, ASTM A105 Carbon Steel is not recommended for cryogenic or sub-zero temperature applications due to its limited impact resistance at low temperatures
ASTM A105 fittings are typically supplied in a normalized, normalized and tempered, or quenched and tempered condition depending on the end-use requirement.
ASTM A105 Buttweld Fittings are available in standard wall thicknesses ranging from Schedule 10 to Schedule XXS. The selection depends on design pressure, temperature, and pipeline specifications.
