Which group has developed the most widely used numbering and lettering system for filler metal identification ?
A) AWS
B) AISI
C) ASTM
D) NEMA

Name: Which group has developed the most widely used numbering and lettering system for filler metal identification ? A) AWS B) AISI C) ASTM D) NEMA
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Question

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AWS (American Welding Society) has developed the most widely used numbering and lettering system for filler metal identification, known as the AWS classification or "A-number" system.

Which Group Has Developed the Most Widely Used Numbering and Lettering