Schweizer Dipple (SDI) was established in 1934 and is one of the leading mechanical contractors in the United States. The company is a full-service mechanical contractor that specializes in industrial process piping, fire protection systems, sheet metal and heating and air conditioning services. SDI is based in Oakwood Village, Ohio, and operates in a 25,000-square-foot facility with offices and a state-of-the-art fabrication shop that is equipped with modern equipment in order to pre-fabricate piping systems and sheet metal to minimize field work, which helps its customers with scheduling and budgeting restraints. SDI also has maintenance contracts with many companies in the northeast Ohio area and can accommodate any service or emergency work. In addition, the company is an Ohio Certified Welder, approved in carbon steel, stainless steel, aluminum and chromium among several other materials.