タイトルまたは説明

 Heat exchanger is a heat exchanging equipment,which is wided used in petroleum chemical, metallurgy, electric power, light industry, foodstuff, pharmacy field and etc. In the oil refining, chmical producton line, the number of heat exchangers has occupied around *0% of the total equipment, and *0%**5% of the total investment. In resent years, the usage has expanded because of the develop ment of energy saving technology. it achieves great economic benefit by reusing the heat and lower temperature exchange. In the heat exchanger series the tube heat exchangers are the most widely used.