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Stainless Steel Seamless Tubes, Pipes & U-tubes

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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


种类

1-11-21-31-41-61-71-81-10


1-111-121-131-141-15

FAQ
1.How many countries you already expeorted?
--We exported stainless steel pipes to more than 30 countries mainly from Egypt,Turkey,India,Iran,Dubai,Thailand,Philippine

2.What is our product range?
--Based on our stainless steel seamless pipe factory, We supply the ONE-STOP service fittings,flanges, valves etc.

3.what is your delivery time?
--It depends on the demanded quantities and your location,nearly in 15-50days.

4. Can you provide OEM service?
--Yes. Welcom to contact us for more details discuss.

5. Can we visit your factory?
--Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.

6.How to distinguish 304 and 201 stainless steel?
--1). Specification: the Bai composition is different. 304 has better quality  and the price is expensive, but 201 is worse. 304 is imported stainless steel plate and 201 is domestic stainless steel plate.
2). 201 is composed of 17cr-4.5ni-6mn-n which is used for railway vehicles.While 304 is composed of 18cr-9ni, which is used for food production equipment, Xitong chemical equipment, nuclear energy, etc.
3). 201 has high manganese content, bright surface with dark brightness, high manganese content and easy to rust. 304 contains more chromium, the surface is matte and does not rust .The most important thing is that the corrosion resistance is different. The 201 corrosion resistance is not as good as that of 304.
4). The difference between 201 and 304 is the problem of nickel. The 304 nickel's content is more than 201.
5). Stainless steel is not easy to rust because chromium rich oxide is formed on the surface of the steel body to protect the steel body. Material 201 belongs to high manganese stainless steel, which has higher hardness, high carbon and low nickel than 304.


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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 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 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 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



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