Incorporated in 2007, Standard Sheet Metal Machinery specializes in machinery for the manufacture of spiral round and rectangular duct and fittings with over 40 years of experience.  In addition to our Enterprise 500 Plasma cutting machine built in Lisbon Iowa, ​we proudly sell machines that are manufactured by JWT Technology Ltd.  As VP of international sales with Metcoil Systems Corporation, one of our most successful sales offices was our joint venture Metcoil Limited’s Korea sales branch located in Seoul Korea.  This office was managed by Mr. Kyu Cha.  When the joint venture Metcoil Limited closed in the 1990’s Mr. Cha started JWT Technology Ltd. located in Seoul, Korea to continue to offer service and parts to Metcoil’s duct machinery customers in Korea.  From their start, as a service and sales company for Lockformer Engel, and Iowa Precision machines, they evolved into one of the largest manufacturers of spiral and rectangular duct making machinery in the world. 

Jinwoong Factory in Seoul Korea

JWT designs and produces machines to ISO quality standards in their two state of the art factories near Seoul Korea. These machines are built to stringent quality standards and have a number of patents on innovative machine designs. Take a moment to browse our website and see how JWT machines can make you a leader in your HVAC market producing the highest quality HVAC products with our reliable machines and leading technology.

JWT Technology Co., Ltd. (JWT) is a Korean company with the stated goal of becoming the leading provider of Rectangular and Spiral Duct automation machinery in the World.  JWT started in Korea in 1991 providing sales and service to Metcoil Limited's Korean customers for Lockformer and Iowa Precision duct fabrication machinery.  From this humble beginning, JWT has grown into a major world-wide supplier of duct making machinery.

JWT began producing machines in 1998 for the Korean market.  They also produced machines for the export markets of Europe and Asia from sales and service centers in Germany and Japan.  Thanks to steady investment in research and development over the years, JWT is now a leading supplier of machinery in these markets.


1005 N Washington St.   Lisbon, IA  52253 USA   1-319-408-1111

JWT Technology