ASTM A234 WP11 alloy steel pipe fittings are components used to connect, control, and adapt the flow of alloy steel pipes in various industrial applications. These fittings are manufactured following the specifications set by ASTM International, specifically under the A234/A234M standard. The "WP" in the designation stands for "wrought pipe," indicating that these fittings are designed for use in high-temperature and high-pressure applications.
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ASTM A234 WP11 Alloy Steel Pipe Fittings Composition:
ASTM A234 WP11 alloy steel pipe fittings are primarily composed of chromium and molybdenum, which impart enhanced corrosion resistance and high-temperature strength to the material. The alloy also contains elements like manganese, silicon, and carbon to achieve the desired mechanical and chemical properties.
Mechanical Properties of ASTM A234 WP11 Alloy Steel Pipe Fittings:
These fittings undergo heat treatment to achieve specific mechanical properties. The typical tensile strength of ASTM A234 WP11 is in the range of 415-585 MPa, while the yield strength is around 205 MPa. Additionally, the fittings exhibit excellent hardness and impact resistance, making them suitable for demanding industrial environments.
Applications of ASTM A234 WP11 Alloy Steel Pipe Fittings:
The alloy steel pipe fittings made to ASTM A234 WP11 specifications find applications in various industries such as petrochemical, oil and gas, power generation, and chemical processing. Their ability to withstand high temperatures and pressures makes them ideal for use in critical processes where reliability and durability are essential.
Types of ASTM A234 WP11 Alloy Steel Pipe Fittings:
ASTM A234 WP11 alloy steel pipe fittings are available in a variety of types, including but not limited to:
Alloy Steel WP11 Elbows: Used to change the direction of the flow, elbows come in different angles (90 degrees, 45 degrees, etc.) to suit specific pipeline configurations.
Alloy Steel WP11 Tees: Tees allow for the creation of branches in a pipeline, facilitating the distribution of fluids in different directions.
Alloy Steel WP11 Reducers: Reducers are employed to connect pipes of different diameters, ensuring a smooth transition in the flow.
Alloy Steel WP11 Caps: Caps are used to close the end of a pipe, preventing the leakage of fluids.
Alloy Steel WP11 Stub Ends: Stub ends are used in combination with lap joint flanges to create a disassembled joint.
Manufacturing Process of ASTM A234 WP11 Alloy Steel Pipe Fittings:
The manufacturing of ASTM A234 WP11 alloy steel pipe fittings involves processes like hot forming, heat treatment, and machining. The raw material, typically in the form of seamless or welded pipes, undergoes shaping operations to achieve the desired fitting configuration. Heat treatment is then applied to enhance the mechanical properties, followed by machining to meet dimensional specifications.
Compliance and Testing:
To ensure the quality and reliability of ASTM A234 WP11 alloy steel pipe fittings, we conduct various tests, including chemical analysis, mechanical testing, hardness testing, and non-destructive testing. These fittings must comply with the specified requirements to guarantee their suitability for the intended applications.
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Specifications | ASTM A234 / ASME SA234 |
Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 |
Size | Seamless Butt Weld Fittings: 1/2" - 10" Welded Butt Weld Fittings: 1/2" - 48" |
Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
Size Range | ½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) ASTM A234 Alloy Steel Buttweld Fitting |
Type | DN15-DN1200 |
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom MSS Sp-43 Alloy Steel Pipe Fitting |
Elbows | Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D,
2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
Connection | Welding |
Manufacturing process | Forge, Cast, Push, Press, etc. |
Key markets and industries |
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Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
Specialized manufacturer of | 90 Deg Elbows, 45 Deg Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bend |
Hot forming or Extrusion Method
By forcing a heated billet through a molded die's opening, forged parts are produced by the process of hot extrusion. This article discusses lubricated versus non-lubricated hot extrusion.
Hydraulic Bulge method – Cold forming
Internal pressure and axial feeding are used in hydroforming tube to create the perfect sort of tube. The operation's results can be predicted using the finite-element method.
Deep Drawing Method for caps
Some of the most widely used techniques for creating caps involve cutting the plate into a circle and shaping it with a deep draw. The process of deep drawing sheet metal storage, also known as blanks, creates a circular or irregular shape that is longer than half of its diameter.
Flare Method for Stub ends
The flaring procedure is used to create lap joint flanges and stub ends. A flare or flange face with a cutout called the flow end. Welding is frequently used to generate stub ends after the forge block has been machined to the desired size.
Grade | C | Mn | Si | S | P | Cr | Mo |
A234 WP11 | 0.05-0.2 | 0.3-0.8 | 0.5-1 | ≤0.030 | ≤0.030 | 1-1.5 | 1-1.5 |
Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
A234 WP11 | 415 - 585 | ≥205 | ≥20 |
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