Stainless Steel Seamless Tubes, Pipes & U-tubes

What is the U-type Heat Exchanger?

A U-type heat exchanger is a type of heat exchanger that consists of two parallel tubes (usually made of metal) bent in the shape of the letter "U". The tubes are enclosed within a shell, and the fluid to be heated or cooled flows through one tube while the fluid used for heating or cooling flows through the other tube. This design allows for efficient heat transfer between the two fluids, as they flow in opposite directions, maximizing the temperature difference and improving overall efficiency of the heat exchange process.

What is the advantage of U-type Heat Exchanger?

Compact design

Inproved thermal efficiency

Reduced fouling and scaling

Flexibility in application

Easy maintenance

What is the application of U type heat exchanger?

1.HVAC systems: U-type heat exchangers are commonly used in heating, ventilation, and air conditioning systems to transfer heat between the supply air and the outdoor or return air. These heat exchangers help in recovering heat from the exhaust air and preheating or precooling the incoming air, improving energy efficiency.

2. Chemical processing: U-type heat exchangers are extensively used in chemical processing industries for various applications, such as heating or cooling process fluids, condensing vapors, and recovering waste heat. They are employed in processes like distillation, evaporation, chemical reactions, and heat recovery systems.

3. Power plants: U-type heat exchangers play a vital role in power generation, specifically in thermal power plants. They are used in steam generators and condensers to transfer heat between the turbine exhaust steam and the incoming feedwater, improving overall plant efficiency.

4. Oil refineries: In oil refineries, U-type heat exchangers are employed in processes like crude oil distillation, catalytic cracking, and fluid catalytic cracking. They aid in the exchange of heat between various fluids, such as hydrocarbons, gases, and steam, facilitating the refining process.

5. Food and beverage industry: U-type heat exchangers are utilized in the food and beverage industry to heat, cool, or pasteurize liquids or viscous products. They ensure proper temperature control during processes like juice pasteurization, dairy processing, beer brewing, and sauces production.

6. Pharmaceuticals: U-type heat exchangers are crucial in pharmaceutical manufacturing for processes like sterilization, drying, and cooling. They play a critical role in maintaining controlled and precise temperatures to ensure product quality.

The details of U type heat exchanger

Grade	DIN (EN)	% C(Max)	% Mn Max	% P (Max)	% S (Max)	% SI(Max)	% CR	% Ni	% Mo	% N Max	% CU Max	% OTHERS
Austenitic	304	1.4301	0.080	2.00	0.045	0.030	0.75	18.00-20.00	8.00-10.50		0.10
	304H	1.4948	0.04-0.10	2.00	0.045	0.030	0.75	18.00-20.00	8.00-10.50		–
	304L	1.4307	0.030	2.00	0.045	0.030	0.75	18.00-20.00	8.00-12.00	–	0.10	–
	304LN	1.4311	0.030	2.00	0.045	0.030	0.75	18.00-20.00	8.00-12.00	–	0.10-0.16	–
	309	1.4828	0.20	2.00	0.045	0.030	0.75	22.00-24.00	12.00-15.00		–
	309S		0.08	2.00	0.045	0.030	0.75	22.00-24.00	12.00-15.00		–
	310	1.4841	0.025	2.00	0.045	0.030	1.50	24.00-26.00	19.00-22.00		–
	310S	1.4845	0.08	2.00	0.045	0.030	1.50	24.00-26.00	19.00-22.00		–
	316	1.4401	0.08	2.00	0.045	0.030	0.75	16.00-18.00	10.00-14.00	2.00-3.00	0.10	–	–
	316L	1.4404	0.030	2.00	0.045	0.030	0.75	16.00-18.00	10.00-14.00	2.00-3.00	0.10
	316LN		0.030	2.00	0.045	0.030	0.75	16.00-18.00	10.00-14.00	2.00-3.00	0.10-0.16	–	–
	316Ti	1.4571	0.08	2.00	0.045	0.030	0.75	16.00-18.00	10.00-14.00	2.00-3.00	0.10	–	Ti = 5X (C+N) Min., 0.70 Max.
	317	1.4449	0.08	2.00	0.045	0.030	0.75	18.00-20.00	11.00-15.00	3.00-4.00	0.10	–	–
	317L	1.4438	0.030	2.00	0.045	0.030	0.75	18.00-20.00	11.00-15.00	3.00-4.00	0.10
	317LN		0.030	2.00	0.045	0.030	0.75	18.00-20.00	11.00-15.00	3.00-4.00	0.10-0.22	–
	321	1.4541	0.08	2.00	0.045	0.030	0.75	17.00-19.00	9.00-12.00		0.10	–	Ti = 5X (C+N) Min., 0.70 Max.
	347	1.4550	0.08	2.00	0.045	0.030	0.75	17.00-19.00	9.00-13.00		–	–	Cb = 10XC Min.,1.00 Max.
Ferritic + Martensitic	409	1.4512	0.080	1.00	0.040	0.020	1.00	10.50-11.75	0.50 max.	–	0.030	–	Ti = 6X (C+N) Min., 0.70 Max.
	409RC		0.02	1.00	0.040	0.030	1.00	10.50-11.75	0.50 max.	–	0.020	–	Ti = 5X C Min., 0.75 Max.
	409M	–	0.03	0.8-1.5	0.03	0.030	1.00	10.80-12.50	1.50 max.	–	0.030	–	Ti = 0.75 Min.,
	410	1.4006	0.15	1.00	0.040	0.030	1.00	11.50-13.50	0.75 max.		–
	410S		0.08	1.00	0.040	0.030	1.00	11.50-13.50	0.60 max.
Ferritic	405	–	0.80	1.00	0.04	0.030	1.00	11.50-14.50	0.60		–	–	Al = 0.10 – 0.30
	430	1.4016	0.12	1.00	0.04	0.030	1.00	16.00-18.00	0.75 max.
	430Ti	–	0.030	1.00	0.04	0.030	1.00	16.00-19.00				–	Ti = 0.10 -1.0
	436	–	0.12	1.00	0.040	0.030	1.00	16.00-18.00		0.75-1.25	–	–	Cb = 5X C Min., 0.80 max.
	439	–	0.07	1.00	0.04	0.03	1.0	17.00-19.00	0.5	–	0.04	–	Al = 0.15, Ti = 0.2 -1.0

Stainless Steel Seamless Pipes Dimension – (S.S. Seamless Pipe)
Nominal Pipe Size	Nominal	Outside Diameter	Wall Thickness & Weight
			Sch. 5S			Sch. 10S		Sch. 20S		Sch. 40S		Sch. 80S		Sch. 160S
mm	Inch	mm	Inch	Wall Thick	Weight Kg/Mtr.	Wall Thick	Weight Kg/Mtr.	Wall Thick	Weight Kg/Mtr.	Wall Thick	Weight Kg/Mtr.	Wall Thick	Weight Kg/Mtr.	Wall Thick	Weight Kg/Mtr.
6	1/8	10.3	0.405	1	0.23	1.24	0.28	1.5	0.33	1.73	0.37	2.41	0.47	–	–
8	1/4	13.7	0.54	1.2	0.37	1.65	0.49	2	0.58	2.24	0.64	3.02	0.82	–	–
10	3/8	17.2	0.675	1.2	0.47	1.65	0.63	2	0.74	2.31	0.87	3.2	1.12	–	–
15	1/2	21.3	0.84	1.65	0.81	2.11	1.02	2.3	1.07	2.77	1.29	3.73	1.62	4.75	1.97
20	3/4	26.7	1.05	1.65	1.05	2.11	1.3	2.5	1.52	2.87	1.71	3.91	2.93	5.56	2.93
25	1	33.4	1.315	1.65	1.03	2.77	2.13	2.5	2	3.38	2.54	4.55	3.29	6.35	4.3
32	1¼	42.2	1.66	1.65	1.65	2.77	2.73	3	2.9	3.56	3.44	4.85	4.56	6.35	5.69
40	1½	48.3	1.9	1.65	1.93	2.77	3.11	3	3.35	3.68	4.11	5.08	5.49	7.14	7.35
50	2	60.3	2.375	1.65	2.4	2.77	3.99	3.5	4.25	3.91	5.52	5.54	7.6	8.74	11.26
65	2½	73.03	2.875	2.11	3.7	3.05	5.26	4	6.81	5.16	8.77	7.01	11.59	9.53	14.91
80	3	88.9	3.5	3.5	4.51	3.05	6.45	4	8.37	5.49	11.47	7.62	15.51	11.13	21.3
100	4	114.3	4.5	2.11	5.85	3.05	8.36	4.5	12.18	6.02	16.07	8.56	22.66	13.49	33.54
125	5	141.3	5.563	2.77	9.5	3.4	11.6	5	16.8	6.55	21.08	9.53	31	15.88	49.11
150	6	168.3	6.625	2.77	11.35	3.4	13.82	6.35	25.36	7.11	28.68	10.97	42.56	8.24	67.53
200	8	219.08	8.625	2.77	14.8	3.76	20	6.35	33.31	8.18	43.18	12.7	64.64	23.01	111.27
250	10	273.05	10.75	3.4	22.61	4.19	27.8	6.35	41.77	9.27	60.31	12.7	81.55	28.58	172.33
300	12	323.85	12.75	3.96	31.25	4.57	36	6.35	49.7	9.53	73.85	12.7	97.43	33.32	238.68
350	14	355.6	14	3.96	34.35	4.78	41.3	7.92	67.9	11.13	98.54	–	–	–	–
400	16	406.4	16	4.19	41.6	4.78	47.34	7.92	77.82	12.07	123.3	–	–	–	–
450	18	457.2	18	4.19	46.85	4.78	53.32	7.92	87.74	14.27	155.86	–	–	–	–
500	20	508	20	4.78	59.31	5.54	68.64	9.53	117.14	15.09	183.42	–	–	–	–
600	24	609.6	24	5.54	82.57	6.35	94.52	9.53	141.11	17.48	255.41	–	–	–	–

Stainless Steel Seamless Tubes Dimension – (S.S. Seamless Tube)
Wall thickness in mm.	0.5	0.6	0.7	0.8	1	1.2	1.6	2	2.6	3	3.2	3.6
O.D. in mm.	Weight in kg/meter
6	0.069	0.081	0.093	0.104	0.125	0.144	0.176	–	–	–	–	–
9.52	0.112	0.134	0.154	0.174	0.213	0.249	0.317	–	–	–	–	–
10	0.119	0.141	0.163	0.184	0.225	0.264	0.336	–	–	–	–	–
12.7	0.153	0.182	0.21	0.238	0.293	0.345	0.444	–	–	–	–	–
14	0.169	0.201	0.233	0.264	0.325	0.384	0.496	–	–	–	–	–
15.87	0.192	0.229	0.266	0.301	0.372	0.44	0.571	0.694	–	–	–	–
19	0.231	0.276	0.32	0.364	0.45	0.534	0.696	0.85	1.066	1.2	1.264	–
25	0.306	0.366	0.425	0.484	0.6	0.714	0.936	1.15	1.456	1.65	1.744	1.926
25.4	0.311	0.372	0.432	0.492	0.61	0.726	0.952	1.17	1.482	1.68	1.776	1.962
31.8	–	–	–	–	–	0.918	1.208	1.49	1.898	2.16	2.288	2.538
38	–	–	–	–	–	1.104	1.456	1.8	2.301	2.625	2.784	3.096
44.5	–	–	–	–	–	1.299	1.716	2.125	2.724	3.113	3.304	3.681
50.8	–	–	–	–	–	1.488	1.968	2.44	3.133	3.585	3.808	4.248
63.5	–	–	–	–	–	–	2.476	3.075	3.959	4.538	4.824	5.391
76.1	–	–	–	–	–	–	2.98	3.705	4.778	5.483	5.832	6.525
101.6	–	–	–	–	–	–	4	4.98	6	7	7,872	8.82