Mainly used in the petrochemical industry, heat exchanger tube bundle. Including the heat exchanger, air cooler, reboiler, paraffin hydrogenation unit hydrogen cooler, water cooler, wax oil steam generator, hydrogen compressor intercooler, the first top condenser, often top cooler, , Softened water heat exchanger and other devices. At the same time, electricity, fertilizer, transportation and oil and other industries can also apply.