Piping Welding Position | Recent |

The American Society of Mechanical Engineers (ASME) classifies pipe welds using a numbering system followed by the letter (which stands for "Groove" weld). International standards (ISO 6947) use specific letter-based prefixes. 1. The 1G Position (Horizontal Rolled) ASME Designation: 1G ISO 6947 Designation: PA Pipe Orientation: Horizontal axis.

The pipe rotates while the welder holds the torch or electrode stationary at the top dead center (12 o'clock position).

High. The welder constantly transitions through three distinct plate positions: overhead (6 o'clock), vertical (3 and 9 o'clock), and flat (12 o'clock). 4. The 6G Position (45-Degree Inclined Fixed) ASME Designation: 6G ISO 6947 Designation: H-L045 (Uphill) / J-L045 (Downhill) Pipe Orientation: Fixed at a rigid piping welding position

Alex felt a sense of pride and accomplishment. He had faced a challenging task and come out on top. From that day on, he was known as one of the best piping welders in the shop, and his skills were in high demand. He continued to hone his craft, always looking for ways to improve and expand his skills. And he never forgot the lessons he had learned on his journey to becoming a master piping welder.

Lowest. Gravity works uniformly, helping the molten puddle settle evenly into the groove. 2. The 2G Position (Vertical Fixed) ASME Designation: 2G ISO 6947 Designation: PC Pipe Orientation: Vertical axis. The 1G Position (Horizontal Rolled) ASME Designation: 1G

Standardized coding systems ensure that welders, inspectors, and engineers speak the same language globally. The two primary regulatory frameworks governing these positions are:

Here, the pipe is vertical, and the weld is a circumferential groove on a horizontal plane. The welder moves the torch or electrode horizontally around the pipe's circumference. Gravity pulls the weld metal downward, which can cause undercutting on the top edge and drooping on the bottom. The 2G position demands precise control of travel speed and electrode angle to fight gravity's sideways pull. As the pipe rotates

While technically a rolling position, it serves as the baseline. The pipe axis is horizontal, and the weld is on the top of the joint. As the pipe rotates, the welder welds in the flat position. This is the easiest position to learn, as gravity pulls the molten metal into the joint.