August 26, 2008 | By Walter Sperko, P.E.
Communicating the right welding position is vital for any welding application. Otherwise, a welder might find himself welding in positions for which he is not qualified--and that's not a good thing.
July 12, 2005 | By Walter Sperko, P.E.
Fabricators and contractors always should check to be sure that the extent of nondestructive examination and the acceptance criteria required are understood clearly by all parties and documented in writing.
May 15, 2003 | By Walter Sperko, P.E.
Torch brazing copper tubing is one of the most common–but widely misunderstood–joining processes. It's possible to make sound joints that are just as strong as the copper tube, easier to braze, and less expensive to produce. But first you have to know basic brazing concepts, including joint design, filler metal behavior, and metallurgy.