Stainless Steel U-shaped Tube C12200
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High Quality
YEXIANG Metal Tech taking science and technology as the guide, we are committed to the R&D and manufacturing of high-efficiency heat exchange tubes. We have brought together the most advanced high-efficiency heat exchange tube manufacturing technologies, processes and equipment. We rely on years of experience in the development of high-efficiency heat exchange tubes to continuously introduce more efficient products to our customers. At the same time, we also focus on product quality management and have established strict quality management systems and production standards in accordance with European and American standards.
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What is Stainless Steel U-shaped Tube
Stainless steel U-shaped tube is processed from stainless steel tube into a special tube, which consists of straight and curved tube, because the shape is similar to the letter "U" and so named, coupled with good corrosion resistance and high temperature resistance, is generally widely used in heat exchangers, involving industries such as petrochemical, biological, pharmaceutical, environmental protection, water treatment, industrial heat exchangers and other fields. The field. It can also be customized according to the specific use of different lengths, thicknesses and curvature of the curved tube to meet the needs of a variety of complex pipeline connection.
Related Product
Stainless Steel High Performance Evaporating Tube
This tube type has a unique fin design. There are specially designed channels under the outer fins that communicate with each other. In a flooded evaporator, this special structure can form a large number of stable vaporization cores to promote liquid evaporation.
The vaporization process becomes a frequent entry and exit channel, which promotes the continuous overflow of bubbles when the refrigerant boils, strengthens the boiling effect, and achieves excellent thermal conductivity, with a heat transfer coefficient up to 7 times that of the light tube.
At the same time, on this basis, the inner wall of the tube is strengthened to minimize the formation of thermal resistance in the tube and maximize the heat exchange capacity on both sides of the copper tube.
The pit/convex structure of the pit tube not only enhances heat transfer without excessively increasing the pressure drop, but is also less likely to generate dirt and dust, reducing wear on the tube wall, and it also has a certain pressure-bearing strength.
Due to the existence of periodic convex cells on the inner surface of the hemp tube, the steam motion state changes, aggravating the fluid disturbance and thinning the boundary layer. At the same time, the synergy between the steam side velocity field and the temperature field is improved to achieve enhanced heat transfer on the steam side.
A pitted heat exchange tube, including a tube body formed by bending and welding metal strips, characterized in that the outer surface of the tube body is provided with a plurality of convex pillars arranged at intervals, and each of the convex pillars respectively includes: The column body is formed by protruding from the outer surface of the pipe body along the radial direction of the pipe body. The cross section of the column body perpendicular to the radial direction is rhombus, and the rhombus shape A diagonal line is parallel to the axis of the tube body; and a column cap, the column cap is integrally formed on the top of the column body, the column cap includes: overlapping with the top in the radial direction an overlapping portion, and an extension portion integrally surrounding the overlapping portion.
Stainless Steel Pool Boiling Evaporator Tube
A fish-scale profile is evenly distributed over the reinforced surface of the tube, while circular channels are formed in a spiral beneath the profile. The special porous structure provides many nucleation sites that are crucial in submerged boiling. It reduces the thickness of the liquid film between the bubble and the tube wall, thereby reducing the thermal resistance. At the same time, due to the thermosiphon effect, the circulation of liquid and bubbles in the fin root channels and cavity pockets can be accelerated, thereby improving internal and external convection.
This circulation can also help remove impurities to reduce scaling. In this particular configuration, the refrigerant can continuously boil more bubbles at a lower superheat. The shell-side heat transfer coefficient can be as high as 30 times that of light tubes.
Furthermore, the tube side heat transfer coefficient is again improved contributing to increased surface area and turbulent flow induced by helical ridges inside the tube.
Stainless Steel Falling Film Evaporator Tube
This structure is beneficial to the diffusion speed of spray liquid on the tube surface and limits the occurrence of local drying on the surface.
At the same time, the bottom of the outer fins is equipped with a micro-sized groove structure, which can make the refrigerant sprayed into the bottom of the fins locally boil, strengthen the boiling effect, and achieve excellent thermal conductivity, with a heat transfer coefficient up to 7 times that of light tubes.
Stainless Steel High Performance Fin Tube
Our high-fin heat exchange tubes are made by integral extrusion processing without any welding process in full size. The main materials are TP2 pure copper and B10 copper-nickel alloy tubes. The product fin height range is 9.525-12mm, and the length can be processed according to customer needs. The product greatly reduces heat exchanger materials and improves heat transfer performance through high-fin processing. Overall, the fin ratio can be increased by 10-15% compared to ordinary light tubes.
Stainless Steel High Performance Condensing Tube
This tube style features a proprietary design. The ends of the fins are equipped with sharp protrusions in both the radial and axial directions, which can pierce the refrigerant liquid film, destroy its surface tension, accelerate the dripping of condensate, and have a high condensation exchange rate.
Stainless Steel Inner Grooved Tube
They are made from smooth tubes by machining many grooves on the inner surface of smooth tubes. With the help of thee grooves, heat exchange surface becomes bigger, and flow field distribution near the grooves is changes; therefore, compared with smooth tubes, their heat exchange rate and performance is improved greatly. The heat exchange efficiency is 1.5-3 times of smooth tube, while maintaining the required minimum pressure drop range.
The heat exchange area is increased through regular cylindrical or Y-shaped protrusions on the outer surface of the tube. Improve wettability and distribution uniformity, reduce water film thermal resistance, and improve heat transfer efficiency. Mainly used in lithium bromide evaporators or absorbers.
High temperature resistance
Stainless steel U-tube has high high temperature resistance, able to withstand temperatures of up to 800 ℃ or more, especially suitable for high temperature heat exchange occasions
Corrosion resistance
Stainless steel U-pipe has good corrosion resistance and can resist the erosion of most corrosive media.
Long service life
Stainless steel U-tube has high durability and long service life, and will not be easily rusted or damaged.
Safety and reliability
Stainless steel U-pipe has high safety and reliability, reducing the risk of leakage.
Easy maintenance
Stainless steel U-pipe is easy to maintain, if there is a problem, it can be solved by replacing it.
Role of Stainless Steel U-Tube
Heat exchanger
Stainless steel U-tube can be used as the main part of heat exchanger, the U-shape design makes the fluid inside and outside the tube can exchange heat in a relatively large area, which improves the efficiency.
Evaporators and condensers
Stainless steel U-tubes can also be used in the design of evaporators and condensers. In an evaporator, the liquid will evaporate inside the tube, carrying away heat; in a condenser, the vapor will condense into a liquid, releasing heat.
Storage and Transportation Containers
Stainless steel U-tubes can be used to store and transport a variety of fluids such as oil, gas and other chemicals. the U-shaped design enhances the stability of the container and prevents excessive vibration when the liquid is flowing.
Heating and Cooling Systems
Stainless steel U-tubes can be used as components in heating and cooling systems. For example, in air conditioning systems, stainless steel U-tubes can be used to transfer refrigerant to keep the room temperature at the right level.
Are Stainless Steel U-Tubes Corrosion Resistant?
Stainless steel U-tubes are used in a wide range of applications due to their excellent corrosion resistance. Stainless steel has such excellent corrosion resistance mainly due to its unique alloy composition, especially the high content of chromium. Chromium can form a thin but strong chromium oxide film on the surface of stainless steel, which can effectively isolate oxygen and water, thus preventing further corrosion reactions.
In addition to chromium, stainless steel may also contain other alloying elements such as nickel, molybdenum and titanium, which can further enhance the corrosion resistance of stainless steel. For example, the element nickel can improve the toughness and ductility of stainless steel, making it more resistant to stress corrosion; while the element molybdenum can enhance the resistance of stainless steel to corrosive media such as chloride ions.
In common environments, such as seawater, chemical wastewater, soil, etc., stainless steel U-tube can show good corrosion resistance. However, the corrosion resistance of stainless steel may be challenged in some special circumstances, such as high temperature, high humidity or environments containing specific corrosive media. Therefore, when selecting stainless steel U-tubes, it is necessary to evaluate whether their corrosion resistance meets the requirements according to the specific use environment.
In addition, in order to ensure that the corrosion resistance of stainless steel U-pipe to give full play to, but also need to pay attention to the following points: in the installation and use of the process, the surface of the steel pipe should be avoided to cause mechanical damage or chemical contamination; Secondly, regular maintenance and inspection, timely detection and treatment of possible corrosion problems, for the need for long-term exposure to corrosive environments in the stainless steel U-pipe, you can choose to apply anticorrosive coatings or other protective measures to enhance its resistance to corrosion. Take other protective measures to enhance its corrosion resistance.
Application of Stainless Steel U-Tube
Hvac systems: Stainless steel U-tube is widely used in the manufacture of heat exchangers and condensers in HVAC systems. Its excellent corrosion resistance and thermal conductivity make it an ideal choice. In addition, the shape of the U-shaped pipe also helps to increase the strength and stability of the pipe.
Petroleum and chemical industry: Stainless steel U-tube is widely used in the petroleum and chemical industry to transport high temperature and corrosive media pipe systems. Its corrosion resistance and high temperature strength make it suitable for the treatment of petroleum products, chemicals and acidic solutions.
Food processing and pharmaceutical industry: Stainless steel U-tube is widely used in food processing and pharmaceutical industry because stainless steel material is non-toxic, odorless and easy to clean. They are used to transport food, medicines and biological agents to ensure the safety and hygiene of products.
Construction and decoration field: Stainless steel U-tube is also commonly used in construction and decoration field. Its aesthetic, weather and corrosion resistance make it an ideal choice for indoor and outdoor decorations such as railings, stair railings, door and window frames, etc.
Automotive industry: Stainless steel U-tube also has a certain application in automotive manufacturing. Due to their corrosion resistance and strength, they are often used to manufacture exhaust pipes in automotive exhaust systems.
Stainless steel U-tube is a type of pipe that is used professionally in the construction, industrial and manufacturing industries. It is made of high-quality stainless steel, so it has many advantages such as corrosion resistance, high temperature resistance, high strength, and aesthetics, which makes it one of the important materials for modern industrial construction. So, what is the specific use of stainless steel U-tube?
Stainless steel U-tube must be inspected before use. Check whether there are cracks and deformation on the surface of the pipe and whether the pipe wall is smooth to ensure that the surface of the pipe is smooth and flat. In addition, check whether the connecting parts meet the technical requirements before cutting and welding, so as not to affect normal use.
The use of stainless steel U-tube must pay attention to the maintenance of the pipe. In order to ensure that the surface of the pipe is not corroded, the pipe needs to be cleaned before use, and care should be taken to avoid the use of alkaline cleaners or drawing pads in the cleaning process. In the process of pipe use, should avoid the use of sharp objects on the surface of the pipe damage, to ensure that the surface of the pipe finish and aesthetics. When the pipe appears corrosion, rust and other problems, timely maintenance and maintenance.
The use of stainless steel U-shaped pipe requires attention during installation. It should be installed correctly according to the requirements of use, and excessive pressure, twisting and stretching are strictly prohibited. Pay attention to the control of temperature and time when welding, to avoid welding too long or too short to affect the normal use of the pipe. Check after the welding is completed to ensure that the weld is smooth, firm and free of cracks.
Stainless Steel U-Pipe Installation Steps and Precautions
1) Preparation: Before installing stainless steel U-pipe, you need to prepare some necessary tools and equipments, such as pipe cutter, magnetic bracket, air gun, hydraulic jack, tap, etc. In addition, you need to check the quality and size of stainless steel U-pipe to meet the requirements. In addition, it is necessary to check whether the quality and size of stainless steel U-pipe meet the requirements, on the basis of which the next installation work is carried out.
2) Pipe cutting: According to the specific requirements of the piping system, use the pipe cutter to cut the stainless steel U-pipe, and polish and deburr the cut area. This is the key to ensure the quality and long-term use of the pipe connection.
3) Installation of Magnetic Bracket: Install the magnetic bracket on the piping system to ensure the stability and safety of the stainless steel U-pipe. The magnetic bracket should be set on both sides of the pipe connection location and as many as possible to carry a larger load.
4) Splice the pipe: Splice the stainless steel U-pipe according to the pipe design requirements. First place the pipe on the magnetic support, butt the ends, and then use a hydraulic jack to push the pipe to fit the interface. Subsequently, using an air gun and tap, fix and connect.
5) Inspection and Testing: After the installation is completed, it must be inspected and tested. First check whether the piping is firmly connected, whether the joints are tightly fitted, and whether there are any problems such as water leakage. Then conduct a pressure test to ensure the stability and safety of the piping system. If there are problems, they need to be solved in time.
1) Avoid overstretching the stainless steel pipe during installation to avoid tensile fatigue.
2) Experimental testing should be carried out after installation to detect whether there is any leakage phenomenon.
3) When installing stainless steel U-pipe, pay attention not to interfere with other pipes, so as not to affect the normal operation of the pipeline.
What to Pay Attention to the Use of Stainless Steel U-Pipe?
Attention needs to be paid to the selection of stainless steel U-pipe. When purchasing stainless steel U-pipe, it is necessary to choose a manufacturer with better quality and high brand awareness to ensure the reliability of the quality of the pipe. At the same time, it is also necessary to choose the appropriate specifications and caliber according to the actual use of the situation, to avoid the use of problems caused by the inappropriate size of the pipe.
Secondly, in the process of using stainless steel U-pipe, it is necessary to ensure the cleanliness and hygiene of the pipe. The pipe should be cleaned regularly to remove the dirt and impurities in the pipe and improve the smoothness and hygiene of the pipe. In addition, it is necessary to avoid pouring too hot or too cold liquids into the pipe to avoid pipe deformation and damage.
In addition, the stainless steel U-pipe also needs to pay attention to measures when it is adopted. When the stainless steel U-tube is adopted for heating, the temperature should be gradually increased to avoid too rapid heating and excessive heat treatment, which will cause damage to the pipe. In addition, attention should also be paid to the contact between the pipe and other parts of the heating process to avoid localized overheating resulting in deformation or welding fracture.
When storing stainless steel U-pipe, care should be taken to avoid damage to the pipe. The pipe should be stored in a dry, ventilated place to avoid humidity and moisture. For pipes that are not used for a long time, you can choose to process and seal them to avoid contamination and corrosion inside the pipe.
Stainless Steel U-Tube Welding Methods and Techniques
1) Material preparation: Welding stainless steel U-pipe need to prepare the corresponding pipe, welding rod, cleaner and other materials. Among them, the quality of the pipe and welding rod has a greater impact on the welding effect, should choose the regular manufacturers, reliable quality products.
2) Equipment preparation: Welding equipment including welding machines, electrodes, cooling facilities, welding fixtures and so on. In the case of ensuring the integrity of the equipment, should also pay attention to the cleaning and maintenance of equipment to ensure the smooth progress of the welding process.
3) Site Preparation: Before welding operations, the work area should be cleaned and leveled to ensure that the work process will not appear tilt, depression and other issues.
4) Personnel preparation: Welding personnel should have the appropriate skills and qualifications, familiar with welding procedures. When more than one person is working together, appropriate safety protection measures should be taken.
1) Manual arc welding method: This method uses arc welding machine, the stainless steel electrode and workpiece contact and operation electrode welding, the operator should be safe protection to avoid forced respiratory poisoning and other dangers.
2) TIG (argon arc) welding method: This method uses TIG welding machine, using pure tungsten tungsten electrode welding, this device can be DC and AC two kinds of current welding. TIG welding method has the advantages of high-quality weld and small thermal effect, and is suitable for all kinds of stainless steel welding.
1) Correct use of arc welding machine: In manual arc welding, you must use a special arc welding machine. Before operation, check whether the electrode is correctly installed and tight, to ensure that the positive and negative polarity is correct and adjust the electrode length as required to match the welding conditions. High-quality welding electrodes should be selected and ensure that proper welding techniques are operated, such as shutting down the motor, adjusting the current level, keeping the electrode away from the weld opening, and ensuring smooth connection details.
2) Welding Techniques in TIG (Argon Arc) Welding: When using TIG (Argon Arc) welding, it is important to have the correct techniques. Such as maintaining ozone gas cleaning equipment, avoiding the use of compressed air containing moisture and grease, keeping the tungsten electrode sharp, maintaining proper air flow, etc.
1) Priming: Fix the pipe on the welding fixture, choose the suitable electrode and electrode, and weld the priming layer according to the process requirements. The welding of the priming layer should be smooth and even, in preparation for the subsequent filling of solder.
2) Filling: Fill the priming layer with solder, select the appropriate electrode and current according to the material and thickness of the pipe, in order to ensure that the filler solder is flat and firm. Avoid overcooking, slagging and other problems when filling the solder.
3) Finishing: After completing the filling of solder, carry out finishing work, that is, trimming the edge of the weld, removing slag, so that the weld looks neat and smooth. Care should be taken to protect the weld area from secondary damage during the finishing process.
1) Heat control: Heat input should be reasonably controlled during the welding process to avoid deformation and damage caused by overheating of the pipe. The pipe should be kept stable during welding to avoid rotation or movement.
2) Filling of solder: Keep the electrode perpendicular to the pipe when filling the solder to ensure that the solder is evenly distributed. During the filling process, the appropriate electrode and current should be selected according to the shape and material of the weld to ensure that the filler material is firm and flat.
3) Finishing techniques: When finishing, attention should be paid to trimming the edges of the weld and removing slag to make the weld look neat and smooth. Avoid secondary damage to the weld area during the finishing process.
4) Keep clean: Before, during and after welding, attention should be paid to keep the pipe and welding area clean to prevent dust, oil and other impurities affect the quality of welding.
5) Regular Inspection: During the welding process, the quality of the pipe and electrode, as well as the operation of the equipment should be checked regularly, and any problems should be dealt with in time to ensure that the welding process is carried out smoothly.
1) For the problem of weak welding, the quality of electrode and welding rod should be checked, as well as the heat control during the welding process. We can replace the electrode and electrode with reliable quality and optimize the welding process to improve the firmness of welding.
2) For the problem of weld porosity, it is mainly due to insufficient cleanliness or too fast welding speed. We can strengthen the cleaning of the welding area, and control the welding speed, so that the welding rod can be fully melted to reduce the generation of porosity.
3) For the crack problem, it may be due to the pipe is too thin, the heat influence is too large or stress concentration and other factors.
Our factory
Shandong YEXIANG Metal Tech Co., Ltd. is located in Binhai High-tech Industrial Park, Linshu County, Linyi City, Shandong Province. Relying on its strong financial strength and advanced high-efficiency heat exchange tube processing technology, YEXIANG Metal has a consistently stable and pragmatic style to gain a foothold in the fierce market competition. With high market share, high-value brand, high-tech content, high quality has established the company's influence in the copper processing industry and has become an excellent supplier to many listed group companies. It has now developed into a complete industrial chain integrating smelting, extrusion, finishing rolling, drawing and annealing. It has been rated as "Top Ten Copper Tube Enterprises" and "Top Taxpayer in the Copper Tube Industry" for many times.
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