Let's not escape it anymore. Each professional field in today's times require certification and skills. The field of welding is no different. Even the field of welding and training requires certification of various kinds. Welding has its own types and certification varies according to that. For instance, pipe welding has different requirements to be fulfilled. This article aims at dealing with the detailing of pipe welding.
The organisation responsible for the pipe welding certification, the United Association of Plumbers and pipefitters (UA) has made a unique code for the same, i.e. UA-1, 2, 3, 4 etc. It goes on till the number 92 is reached. The common tests count up to 92 but there can be other possibilities as well.
There are several welding processes involved for the pipe welding like Gas Metal Arc (GMAW), Flex Core Arc (FCAW), Shielded Metal Arc (SMAW) and Gas Tungsten Arc (GTAW). If that was not enough, there are also different metal groups involved like carbon steel, stainless steel and aluminium. This is the reason that so many pipe welder certification exists for the varying sites.
You can refer to the ASME Section IX if you want to peep in to the certification requirements and qualification limitations. For the general purpose, we can assert that most common limitations are thickness, position and diameter of pipe. There are some limitations even after achieving the certification tests.
For instance, a welder who has passed the test of TIG on 2 inch schedule 80 pipe in a 6G position can weld 1 inch and grater diameter pipe. It can go up to 436'' thick and then a welder can weld in all positions. Similarly, a welder having passed the test of 6'' schedule 40 in a 6G position is qualified to weld till .560'' thick and it can go down up to 2.875'' pipe diameter.
The market welder qualification asks for a combo pipe welder. It is always beneficial to enhance your skill to make it to the best possible option. Obviously, if you carry both the skills of welding a TIG root as well as a hot pass followed by an E7018 stick fill and cap, it will be easy for you to get the job. The combo welders are able to weld with several welding processes. Companies choose TIG welding for the root and hot pass and stick welding for the rest of the pipe. Requirement can vary; therefore, your skills should be compatible enough to deal with the conditions.
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