Providing our clients with full service from concept to production. We focus on giving our customers a value in Pipe & Custom ... Plastic Profile Extrusion, which is Quality + Service + Competitive Price! OSI PLASTICS is a recognized leader in the industry as a quality Pipe & Custom Plastic Profile Extrusion organization. OSI PLASTICS is ISO 9001:2008 Registered, which helps in ensuring that our customers receive the quality that they require and deserve. OSI PLASTICS manufacturers all of it's products in the United States, and will continue to do so. OSI PLASTICS is part of the growing family of Ohio Steel Industries. We are continually in search of and undergoing a process of continuous improvement. Phone: 800-652-2321 Alternate Phone: 614-471-4804 Fax: 614-471-1190 read more