Question

which designation indicates a groove weld on a pipe in the horizontal fixed position and welding progression is up or down? 5g 1g 2g 6g

Explanation:

In welding, the 5G designation is for a groove weld on a pipe in the horizontal fixed position with welding progression up or down. The 1G is for a flat position (horizontal), 2G for a horizontal - vertical (horizontal fixed) but with a different orientation in some aspects compared to 5G for groove welds in terms of the full - scope of the position description here, and 6G is for pipe welding with an included angle.

Answer:

5G