Unused approx 1228 sq ft TP304L Stainless Steel vertical shell and tube heat exchanger. Manufactured by Wuxi Zhicheng Biochemical Engineering Equipment Co., Ltd. (544) 19.05mm OD x 3500mm L tubes rated 175PSI/FV@220C. SA240 Shell MAWP 175PSI/FV @220C. Lug mounted.Serial #WZA21-20. National Board #150. Built 2021.