ASME B16.11-2021


Forged Fittings, Socket-Welding and Threaded

2021 Edition

Published by ASME International, 09/19/2022

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ASME B16.11 is a standard established by the American Society of Mechanical Engineers (ASME), which specifies the requirements for forged steel pipe fittings used in high-pressure and high-temperature applications. The standard primarily covers two types of pipe fittings: threaded and socket-weld, suitable for high-pressure piping systems in industries such as oil, gas, petrochemical, and power.

Here are some key aspects of the ASME B16.11 standard:

  1. Scope: ASME B16.11 is applicable to forged pipe fittings with pressure ratings of 2000 psi (approximately 13.8 MPa) and above. This includes various shapes and sizes of fittings such as elbows, tees, socket welds, butt weld elbows, threaded sockets, etc.
  2. Materials: The standard specifies the materials that can be used for manufacturing these pipe fittings, typically carbon steel, alloy steel, stainless steel, etc. This ensures that the fittings have sufficient strength and corrosion resistance to meet the requirements of high-pressure and high-temperature conditions.
  3. Size and Dimensional Standards: The standard details the dimensions and dimensional standards for various fittings to ensure compatibility with other components of the piping system.
  4. Manufacturing Requirements: ASME B16.11 outlines the forging, machining, and heat treatment processes to ensure the quality and performance of the pipe fittings.
  5. Testing and Inspection: The standard specifies a series of tests and inspections for pipe fittings to ensure they meet the specified requirements and have reliable performance.
  6. Marking and Identification: The standard dictates the information that must be included on the fittings, such as markings, material identification, pressure class, etc., for identification during installation and use.

The design intent of the ASME B16.11 standard is to ensure that the fittings used in piping systems have adequate strength, sealing capability, and durability to meet the requirements of high-pressure and high-temperature conditions. It provides engineers, designers, and manufacturers with a consistent specification to design, produce, and install high-quality piping systems in accordance with the standard.

Product Details

Revision: 2021 Edition

Published Date: Sep 19, 2022

Status: Active, Most Current

Document Language: English

Published By: ASME

Page Count: 34



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