Which number and letter combination does the AWS assign to the vertical welding position?

The AWS (American Welding Society) assigns the number and letter combination of 3G to denote the vertical welding position. In this designation, the number "3" indicates the position itself, which is vertical, while the letter "G" stands for groove, referring to the type of weld joint being used.

In vertical welding, the welder must maintain control of the molten pool of metal in a more challenging position compared to flat or horizontal orientations, making it essential to possess skills in managing gravity's effects on the welding pool. This position is commonly tested in welding certifications and is vital for many welding applications in construction and manufacturing, where joints often must be created in vertical orientations.

Understanding this designation is crucial for welders to interpret the various positions they will encounter in the field and to adhere to the appropriate specifications and standards set by AWS for vertical welding techniques.