What is the purpose of bevel edges in a welded joint and how does it affect TIG welding quality?

• A. Bevels provide access for root penetration and filler deposition; influence heat distribution, fusion, and final weld strength; proper bevel angles improve welding quality.
• B. Bevels are decorative; no effect on weld quality.
• C. Bevels shorten weld length but weaken joint.
• D. Bevels are only used for aesthetic reasons.

Answer: (A)