Founded in 956, United Riggers & Erectors is an international installer of bulk material handling systems for steel, automobile and aerospace industries. The company offers a wide range of services, such as contracting, installation, construction, rigging, trucking and hauling services. The company s construction services include concrete foundations and slabs, tenant improvement, seismic upgrades, structural steel construction, as well as numerous process systems. Located in Walnut, Calif., United Riggers & Erectors clients include entertainment industries, pharmaceuticals, food services and heavy industry. The company provides a complete range of specialized air-ride trailers. It has more than 200 pieces of rolling equipment, mobile cranes, removable goose-neck equipment and over 100 forklifts.