Locations and Contact: Mailing Address: P.O. Box 2886 York, PA 17405 Kinsley's Manufacturing Division provides structural steel for columns, beams and other items used during the construction of buildings, as well as miscellaneous metals that include stairs and handrails. Kinsley Manufacturing also fabricates steel. Kinsley Manufacturing has provided steel for commercial, retail, educational, office, food industry and warehouse/distribution clients. For more detailed information, click on any of the items listed to the left.