Heat exchanger is widely applied in a general equipment in chemical, petrochemical, power, medicine, metallurgy, light industry, refrigeration. Type heat exchanger is various, according to the heat transfer surface shape and structure can be classified into the tube type, plate type heat exchanger and other types, such as spiral heat exchanger, tube heat exchanger, tube heat exchanger, heat exchangers, coil heat exchanger, condenser, cooler, the chlorine cooler, heater, heat exchanger, the mother liquor evaporator reboiler, crystalline external cooler, our production manufacturing all kinds of heat exchangers, mainly used for strong corrosive conditions, according to the use conditions, medium user corrosion strength, titanium, nickel, selection of tantalum and other special materials, effective to improve the anti-corrosion performance and the working efficiency of the equipment, the following specific parameters of ordinary tubular heater:

Nominal diameter	No. of tube pass	No. of tube	heater transfer area   nominal value/calculated value					Flow (m/hr) when flow rate is 0.5m/sec		nominal pressureMpa
			length of tube（m）					carbon steelφ25×2.5
			1500	2000	3000	4000	6000	stainless steelφ25×2
159	I	14	1.5/1.62	2/2.17	3/3.27			0.0044/0.0049	7.92/8.82	0.25
219	I	26	3/3.00	4/4.02	6/6.06	8/8.1		0.0082/0.009	14.76/16.2	0.6
	II	26	3/3.00	4/4.02	6/6.06	8/8.81		0.0041/0.0045	7.38/8.01	1
273	I	44	5/5.08	7/5.18	10/10.26	14/13.72	21/20.63	0.0138/0.0152	24.84/27.36	1.6
	II	40	5/4.62	6/6.19	9/9.33	12/12.47	19/18.76	0.0063/0.0069	11.24/12.42	2.5
325	I	60	7/6.93	9/9.28	14/14.00	19/18.71	28/28.13	0.0188/0.0208	33.84/37.44	0.6
	II	56	6/6.47	9/8.66	13/13.05	17/17.46	36/26.26	0.0088/0.0097	15.84/17.46	1
400	I	119	14/13.47	18/18.41	28/27.76	37/37.10	55/55.8	0.0374/0.0412	67.32/74.16	1.6
	II	110	13/12.70	17/17.02	26/25.66	34/34.20	50/51.58	0.0173/0.019	31.14/34.2	2.5
500	I	185			45/4.15	55/57.68	85/86.74	0.0581/0.0641	104.58/115.38
	II	180			40/41.99	55/57.68	85/86.74	0.0283/0.0312	50.94/56.16
600	I	269			60/62.7	85/83.88	125/126.13	0.0845/0.0932	152.10/167.76
	II	266			60/32.05	80/82.94	125/14.72	0.0418/0.0461	75.24/83.98
700	I	379			90/88.41	120/118.17	175/177.71	0.0091/0.1313	214.38/236.34
	II	358			85/83.51	110/111.62	165/167.85	0.0562/0.062	101.16/111.6
800	I	511			120/119.20	160/159.16	240/239.60	0.1605/0.177	288.90/318.6
	II	488			115/113.83	150/152.16	230/228.81	0.0767/0.0845	138.06/152.1
900	I	649			150/151.39	200/202.36	305/304.3	0.2039/0.2248	367.02/404.46
	II	630			145/146.96	195/196.44	295/295.40	0.0990/0.1091	178.20/196.38
1000	I	805			185/187.78	250/251.00	375/377.45	0.2829/0.2788	455.22/501.84
	II	792			185/184.75	245/246.95	370/371.36	0.1244/0.1374	223.92/246.96