In pipe groove welding, the 45 degree fixed position is called:

In pipe groove welding, the terminology for the various fixed positions is critical for understanding the welding processes and positions involved. The 6G position refers to a fixed position where the pipe is inclined at a 45-degree angle from the horizontal and rotated around its own axis. This position is particularly challenging as it combines aspects of vertical and horizontal welding, requiring the welder to adapt their techniques to maintain control of the weld pool and ensure proper penetration and fusion throughout the joint.

The 6G position is often used in more advanced welding applications, such as those found in industrial environments or critical infrastructure, where the pipes may be subjected to high pressures or critical loads. Typically, welders are tested in the 6G position to demonstrate their proficiency and versatility in handling challenging welds, as it requires a high level of skill.

The other positions, such as 1G, 2G, and 4G, describe different orientations; for example, 1G is flat, 2G is horizontal, and 4G pertains to overhead. Each of these positions presents unique challenges, but the 6G position is distinguished by its angle and complexity, representing a significant test of a welder's capabilities.