Get current pricing for Chemtec/armstrong, 100 Sq. Ft. Chemtec/ 100 Sq.ft. Chemtec/armstrong 316 Stainless Steel Scraped Surface Heat Exchanger / Crystrallizer. 324mm Dia. X 9130 Mm Jacketed Length. 10500 Mm O . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: