Site Welding Services is a premier steel contractor based in Woodinville, Washington. We specialize in Structural and Architectural projects throughout Washington state.

Setting ourselves apart from other steel contractors, Site Welding Services is both a precision fabricator and experienced jobsite installer of steelwork on commercial and residential projects.

Founded in 1995 by owner John (Phil) Hanlon, Site Welding Services occupies a one-half acre site that contains a production / storage yard, loading & unloading areas, a 12,000 sq. ft. fabrication shop and a 2000 sq. ft. administration building.