[dusty1]

What is the difference between the UA & the Boilermakers unions?As far as the welding side of things goes,dont they both work on the same type projects?

[BlackCatBonz]

Yes they do.
The boilermakers manufacture pressure vessels and the UA runs all of the pipe between them and around them.

As for the type of welding you might do, there will be some differences: the guts of a heat exchanger are a lot different than making a straight run of pipe.