Cherne is recognized as an industry leader throughout the world, selling pipe plugs and testing equipment from Minneapolis to Madrid. In 1998, Cherne demonstrated a commitment to quality and continuous improvement of the management system by achieving the ISO 9001 registration. Cherne is the only domestic pipe plug manufacturer to achieve this certification. Serving the plumbing and underground industries for almost 50 years, Cherne is dedicated to providing customers with unparalleled product quality in addition to the highest level of customer service. From plumbing to underground—we have your products in stock.Something looks off?