Welcome to Steamfitters Local 420
The Steamfitters of UA Local 420 would like to thank you for taking the time to visit our website to learn more about us. Since first chartered in 1903, Steamfitters Local 420 has been constructing, installing and maintaining Mechanical systems throughout our jurisdiction. We service the entire state of Pennsylvania’s gas pipeline distribution. In addition, Local 420 has jurisdiction in the area of instrumentation calibration over four states. Including Pennsylvania, we service New Jersey, Delaware, and New York.
Throughout our great history, we’ve worked on many high profile projects in working to build Philadelphia into the great city it is today. We’re proud to have worked on projects such as the Sun Oil Refineries, Children’s Hospital of Philadelphia and the stadiums for the Eagles, Phillies, Flyers, and 76ers.
If you’re building a new or upgrading your current Industrial or Commercial facility, build and service with Steamfitters Local 420 by utilizing one of our Signatory Contractors.