A 6G welding position is the angle that a piece of pipe is placed at during the 6G pipe welding position test. The test requires that the welder fuse together two fixed pieces of pipe that are set at a 45-degree angle. The 6G pipe welding position certification is one of the hardest to obtain.
In addition to the 6G position test, there are tests for 1G, 2G, 5G and 6GR pipe welding positions. The 1G pipe welding certification test requires that the welder fuse together two pieces of pipe that set on a horizontal plane. The two pieces of pipe are not fixed and can be rolled as they are welded together.
During the 2G pipe welding certification test, the welder must fuse together two pieces of pipe that are placed in a vertical position. They are fixed and cannot be moved. The position of the pipe during the 5G certification test is the same as that of the 1G test. However, the pipe is floating and cannot be moved.
The 6GR pipe welding position certification test is considered to be even harder than the 6G. The reason for the difference in difficulty level is that in addition to the sections of the pipe being placed at a 45-degree angle, there are also two lengths of pipe placed on either side of the test pipe to restrict the movement of the welder even further.