Links to each international web site.

United Association of Plumbers, Pipefitters & Sprinklerfitters

www.ua.org

International Brotherhood of Electrical Workers

www.ibew.org

Sheet Metal Workers International Association

www.smwia.org

International Association of Heat and Frost Insulators and Asbestos Workers

www.insulators.org

International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers

www.ironworkers.org

International Union of Elevator Constructors

www.iuec.org