A335 P22 Seamless Pipe

A335 P22 is a type of seamless pipe made from an alloy steel known for its high-temperature and high-pressure applications. Here’s a detailed product description:

A335 P22 Seamless Pipe: Product Description
**1. Material Composition:

Alloy Steel: A335 P22 is an alloy steel pipe made from a combination of chromium and molybdenum, which provides excellent resistance to heat and pressure.
Chemical Composition:
Carbon (C): 0.05-0.15%
Manganese (Mn): 0.30-0.60%
Silicon (Si): 0.50-0.80%
Chromium (Cr): 1.90-2.60%
Molybdenum (Mo): 0.90-1.20%
Others: Trace amounts of sulfur, phosphorus, and other elements as per ASTM specifications.
**2. Specifications:

Standard: ASTM A335
Grade: P22
Type: Seamless pipe
Size Range: Typically from 1/2 inch to 24 inches in diameter, but custom sizes can be produced.
Wall Thickness: Varies from Schedule 10 to Schedule 160, depending on application needs.
**3. Properties:

Temperature Resistance: Designed to withstand temperatures up to around 600°C (1112°F), making it suitable for high-temperature service.
Mechanical Properties:
Tensile Strength: Minimum of 415 MPa (60,000 psi)
Yield Strength: Minimum of 205 MPa (30,000 psi)
Elongation: Typically around 20% in 50 mm (2 inches) for elongation.
Corrosion Resistance: Offers moderate resistance to oxidation and corrosion in high-temperature environments.
**4. Applications:

Power Plants: Ideal for use in steam lines and other high-temperature systems in power generation facilities.
Petrochemical Industry: Used in high-pressure and high-temperature services such as refining processes.
Chemical Processing: Suitable for applications involving aggressive chemicals and high temperatures.
**5. Manufacturing Process:

Production: Pipes are produced through seamless manufacturing methods, ensuring strength and uniformity. The process involves heating the alloy, piercing, and then extruding it into the desired shape and size.
**6. Standards & Certification:

Testing: Pipes are subjected to rigorous testing including hydrostatic tests, mechanical tests, and chemical composition tests to meet ASTM A335 P22 standards.
Certification: Pipes come with mill test certificates and can be certified according to international standards or customer requirements.
**7. Delivery & Packaging:

Delivery Condition: Typically supplied in standard lengths, but custom lengths can be arranged.
Packaging: Pipes are usually bundled, wrapped in protective material, and delivered in standard or custom packaging as per customer requirements.
**8. Additional Information:

Heat Treatment: Pipes may undergo heat treatment processes such as normalizing or tempering to enhance mechanical properties.
Inspection: Involves comprehensive inspections including visual, ultrasonic, and radiographic testing to ensure quality and compliance.
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