Strand Tech

Strand-Tech Manufacturing

Strand Tech Manufacturing (STM) is a leading domestic manufacturer of pre-stressed concrete strand and high carbon wire. Our materials are used for pre-stressed and post-tensioned construction applications. Incorporated in 1998, the state-of-the-art manufacturing facility located in Summerville, South Carolina, became a subsidiary of Keystone Consolidated Industries in 2016.

Recent facility advancements and upgrades have resulted in increased manufacturing capacity. We now produce in excess of 50,000 tons per year. Products include Grade 250, Grade 270 and Grade 300 in low relaxation strand. STM currently carries all sizes and grades listed in the latest revision of ASTM A-416. Furthermore, we are working with ASTM to revise the standards to include other Grade 270 and Grade 300 products that are commonly used in the market.

STM materials are used in bridges, commercial and industrial buildings, concrete poles, parking decks, commercial buildings and residential housing foundations.

Much of STM’s high carbon steel rod feedstock comes from our sister company, Keystone Steel & Wire. In addition to providing a reliable, steady supply of quality steel, the mill is Buy America Compliant. Therefore, STM products meet the requirements for any project requiring materials that are “100% made in the USA”.

Contact us for additional information on Strand-Tech Manufacturing or to request a quote.



The facilities and equipment at STM are designed to allow for the greatest degree of freedom in new product development and improvement. We work in close partnership with our customers. As a result, we have developed new products and processes that have satisfied our customers’ unique and individual needs.

Product/Application Sell Sheet

STM Technical Documents


258 Deming Way Summerville, SC 29483


Terry Johnson