ASTM A234 WP22 alloy steel pipe fittings are a widely used category of components in various industries due to their excellent mechanical properties and resistance to high temperatures. The ASTM A234 specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction. Specifically, WP22 refers to the grade of alloy steel used in these fittings, known for its enhanced strength and corrosion resistance.
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Composition of Alloy Steel WP22 Pipe Fittings:
ASTM A234 WP22 alloy steel pipe fittings are made from a composition that includes chromium and molybdenum, which contribute to their exceptional heat resistance. The alloy also contains other elements like manganese, silicon, sulfur, phosphorus, and carbon to achieve specific mechanical properties. The combination of these elements provides the fittings with superior strength, toughness, and corrosion resistance.
Manufacturing Process of Alloy Steel WP22 Pipe Fittings:
The manufacturing process of ASTM A234 Alloy Steel WP22 pipe fittings involves forming, machining, and heat treatment. The fittings can be produced through processes such as forging or forming followed by machining, depending on the specific requirements. Heat treatment is a crucial step to achieve the desired mechanical properties and enhance the overall performance of the fittings.
Types of Alloy Steel WP22 Pipe Fittings:
ASTM A234 WP22 alloy steel pipe fittings come in various types to suit different applications. Common types include elbows, tees, reducers, caps, and more. These fittings are designed to facilitate changes in direction, branch off, or combine flow in a piping system. The selection of the type of fitting depends on the specific requirements and the configuration of the piping system.
Applications of Alloy Steel WP22 Pipe Fittings:
These fittings find applications in industries where high-temperature and corrosive environments are prevalent. Some common industries include:
Power Generation: Used in power plants for piping systems handling high-temperature steam and other fluids.
Oil and Gas: Suitable for applications involving the transportation of oil, gas, and other hydrocarbons.
Chemical Processing: Resistant to corrosion, making them suitable for chemical processing plants.
Chemical Processing: Resistant to corrosion, making them suitable for chemical processing plants.
Testing and Standard Compliance of Alloy Steel WP22 Pipe Fittings:
ASTM A234 WP22 alloy steel pipe fittings conform to industry standards, ensuring reliability and compatibility within diverse systems. We adhere to these standards to guarantee the quality and performance of the fittings. Quality control is paramount in the manufacturing of ASTM A234 WP22 pipe fittings. Various tests and inspections, including chemical analysis, hardness tests, and non-destructive testing, are conducted to ensure that the fittings meet the specified requirements.
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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 WP22 | 0.05-0.15 | 0.3-0.6 | ≤0.5 | ≤0.04 | ≤0.04 | 2-2.5 | 0.87-1.13 |
Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
A234 WP22 | 415-585 | ≥205 | ≥20 |
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