Home | Products | Related Links | Spec Sheets | Contact Us About Us Interstate Pipe & Supply Company is a family owned business located on the Iowa, Wisconsin and Illinois borders by the Mississippi River in Dubuque, Iowa. Interstate Pipe and Supply Company was established in 1960 by Ralph P. Weis Jr. Mr. Weis had a vision to offer a wide variety of quality products at a competitive price, along with a guarantee of outstanding service to the industrial and mechanical markets. Mr. Weis believed in an honest, straight forward and dependable way of doing business. These are traits we carry on today. We embrace the idea that providing the customer with the products and service they deserve needs to be our number one priority. Mr. Weis stepped down as President of IPASCO in 1985. At that time, his two sons, Skip and Peter Weis, were named President and Vice President respectively. Mr. Ralph P. Weis Jr. passed away in 1988. Mr. Skip Weis served as President of IPASCO from 1985 until his untimely death in 2004. Mr. Peter Weis took over as President at that time, and is working in that role today. IPASCO continues to practice the business principles Mr. Ralph P. Weis Jr. started over fifty years ago. As we supply our past, present and future customers, we will do so proudly - always striving to do it in a competitive, reliable and honest way. Here at IPASCO, that's the only way we know.