Selco is a certified AISC steel fabricator for bridges, railing, stairs, overhead catenary systems, highways, building structures, heavy and light rail transit. Selco also manufactures all types of custom NEMA electrical enclosures including 6P, NEMA 4X Fire Rated, consoles, control panels and custom cable trays for the electrical and rail transit industries. We also provide custom machining, welding(our welders are AWS certified in carbon steel, stainless steel, aluminum and hastelloy). End Approaches, Signal Cages and Disconnect Switches. "Made in the USA" Specialties * Mass Transit and Rail Construction * Custom Stairs and Railings * DOT and Heavy Highway Construction * Heavy Weldments * Bridge and Transportation Construction * Custom Electrical Enclosures * Marine Construction * In House Heavy Machining. Selco is also PENNDOT approved.