ASTM A106B is a specification for seamless carbon steel pipe intended for high-temperature service.

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ASTM A106B is a specification for seamless carbon steel pipe intended for high-temperature service. Here are the key specifications of ASTM A106B pipe:

  1. Material: The pipe is made from carbon steel, which provides excellent strength and durability.
  2. Size Range: The nominal pipe size ranges from 1/8 inch to 26 inches, with wall thicknesses varying according to the pipe’s schedule.
  3. Manufacturing Process: The pipe is produced using a seamless manufacturing process, meaning it does not have any welded joints or seams along its length.
  4. Chemical Composition: The carbon steel used in ASTM A106B pipe must meet specific chemical composition requirements, including maximum percentages of carbon, manganese, phosphorus, sulfur, and silicon.
  5. Mechanical Properties: The pipe must possess certain mechanical properties, such as minimum yield strength, tensile strength, and elongation, to ensure it can withstand the intended high-temperature service conditions.
  6. Testing and Inspection: ASTM A106B pipe undergoes various tests and inspections to ensure its quality and compliance with the specification. These may include hydrostatic testing, nondestructive testing (e.g., ultrasonic examination), dimensional inspection, and visual inspection.
  7. Surface Finish: The pipe’s surface finish can vary, but it should be reasonably smooth and free from defects that could impair its performance.
  8. End Connections: ASTM A106B pipe typically comes with plain ends or beveled ends, which allow for easy joining with other components using welding or threading methods.
  9. Application: This specification is primarily used for conveying fluids at high temperatures and pressures. It finds applications in industries such as oil and gas, petrochemical, power generation, and refineries.
  10. Standards Compliance: ASTM A106B pipe conforms to the requirements set by the American Society for Testing and Materials (ASTM) and is widely accepted in various international standards for seamless carbon steel pipes.

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