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Who is ANSI B16 and ASME B16: Article & Quiz with 7 MCQs II A Comprehensive Guide

Codes & Standards

ANSI B16 vs. ASME B16 Standards Quiz

1. Historical Standards

Which organization historically published standards like ANSI B16.5 and ANSI B16.9?

2. Co-Development by ASME

What happened to the standards like ANSI B16.5 and ANSI B16.9 over time?

3. Current Designations

What are the current designations for the standards like ANSI B16.5 and ANSI B16.9?

4. Reasons for Confusion

Why is there confusion between ANSI B16 and ASME B16 standards?

5. Importance of Correct Terminology

Why is using the correct “ASME B16” designation important?

6. Clarity and Compliance

What does referring to the correct standard version (e.g., ASME B16.5-2023) ensure?

7. Overall Understanding

What is the key takeaway regarding the use of “ANSI B16” in the industry?

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Comprehensive Guide on ANSI B16 and ASME B16 standards

There’s often confusion between ANSI B16 and ASME B16 standards due to their historical connection and continued industry usage of outdated terminology.

Here’s a breakdown of the key points:

  • Historically: Many standards like ANSI B16.5, B16.9, etc., existed under the American National Standards Institute (ANSI).
  • Merged into ASME: Over time, these standards were adopted and co-developed by the American Society of Mechanical Engineers (ASME), resulting in “ANSI/ASME” designations.
  • Current Status: Since 1996, most of these standards have been fully incorporated into ASME, becoming solely ASME B16.5, B16.9, etc.

Reasons for the Confusion:

  • Industry Habit: Many professionals and manufacturers still use the outdated “ANSI” or “ANSI/ASME” terminology out of habit or unawareness of the full transition to ASME.
  • Information Sources: Older documents, websites, and catalogs might still reference the outdated designations.

Importance of Using the Correct Terminology:

  • Clarity and Accuracy: Using the current “ASME B16” designation ensures clarity and avoids potential confusion when referencing or ordering these standards.
  • Compliance and Safety: Referring to the correct standard version (e.g., ASME B16.5-2023) ensures adherence to the latest requirements for safety and performance.


While “ANSI B16” might still be used colloquially, it’s crucial to understand that the official and accurate designation is ASME B16 for most relevant standards. This ensures clear communication, avoids confusion, and promotes adherence to the latest safety and technical specifications.

I hope this explanation clarifies the situation and helps you navigate the world of ASME B16 standards accurately!

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