What welding position does not have a specific designation as indicated by the numbering system?

The welding position that does not have a specific designation in the numbering system is GMAW. GMAW, or Gas Metal Arc Welding, is a welding process rather than a position.

In the context of the structural welding code D1.1, specific positions are categorized numerically to define how the welding is conducted regarding the orientation of the workpiece. The standardized designations include flat, horizontal, vertical, and overhead positions, each corresponding to a specific number that helps to categorize the welding technique in relation to gravity.

GMAW, being a welding process, involves various techniques and can be applied in several positions. Understanding that processes and positions are distinctly classified helps in selecting the appropriate welding technique based on project requirements. Thus, GMAW does not correlate with a specific position in the conventional welding classification system.