The UA Local 393 website is dedicated to the men and women of Local 393, both past and present, who have given the very best of themselves and, in turn, have provided our community with over 100 years of excellence.

From certified welders ~ to master plumbers ~ to specialized pipe fitting journeymembers, UA Local 393 craftsmen have long led the way. From the days when Santa Clara Valley was best known for its agricultural produce through today where we have mastered the piping systems that have allowed the birth and continued growth of “Silicon Valley.”

Being a member of UA Local 393 is not just about being a member of a union, it is about being an extremely proud member of one of the finest unions in America.

Whether you’re a first time visitor seeking general information about our union, or a returning member utilizing our in-depth resources, welcome.