Tubesheet

Stainless steel tube sheets are components used in heat exchangers, condensers, and other applications that require efficient heat transfer. It is a circular plate with precision drilling, used to accommodate tubes in the bundle. The tube sheet is used as a support structure and compression component, and provides a safe attachment for the tubes.     Chemical Component of Stainless Steel The main chemical component of stainless steel is chromium, which reacts with oxygen to form a dense oxide film, which has heat resistance and prevents further corrosion of the metal. This allows stainless steel tube sheets to be used for a long time in various harsh environments. Stainless steel, due to its unique microstructure, has high tensile strength and ductility, ensuring that the tubesheet is not easily deformed or fractured under external forces. Especially in high and low temperature environments, stainless steel can still maintain good mechanical properties and is not easily brittle.       The advantages of stainless steel tubesheets Stainless steel has become the preferred material for tubesheets due to its excellent corrosion resistance. It has rust prevention, oxidation resistance, and anti fouling properties, suitable for high temperature and corrosive environments. Stainless steel tube sheets are commonly used in industries such as petroleum and natural gas, chemical processing, power generation, and HVAC. Stainless steel tube plates have good hygiene performance. Due to its smooth surface and no pores, stainless steel materials are not easy to breed bacteria and microorganisms, and are easy to clean and disinfect, meeting hygiene standards. Therefore, stainless steel tube plates are widely used in medical, food processing and other industries, such as surgical instruments, food equipment, etc. In addition, stainless steel tube sheets have sustainability. Stainless steel materials can be recycled and can be melted again to produce new products, reducing resource waste. Meanwhile, stainless steel materials have a long service life, are not easily damaged, reduce the frequency of maintenance and replacement, and have good economic and environmental benefits.     How to manufacture Stainless steel tube plates Stainless steel tube plates are manufactured using various methods, including mechanical processing, drilling, and welding. Precision drilling ensures precise alignment of pipelines, thereby achieving efficient heat transfer. Welding is commonly used to secure pipes to pipe sheets, providing reliable and leak free joints. Wuxi Changrun has absolute equipment strength in tube sheet processing services. At present, the heavy-duty precision workshop has 11 large deep hole drilling equipment and 31 CNC flat drilling equipment, as well as a series of advanced domestic and foreign supporting equipment with high precision, full specifications, and multiple functions. It can provide machining services such as turning, milling, boring, and drilling. There are also advanced equipment such as cutting and welding involved in the previous process.     The selection of stainless steel for tube plates depends on factors such as operating conditions, temperature, and the corrosiveness of the treated fluid. The common grades of stainless steel used in tube sheets include austenitic stainless steel (such as 304 and 316), duplex stainless steel, and ultra duplex stainless steel. These grades combine corrosion resistance, mechanical strength, and thermal conductivity. In summary, stainless steel tube sheets are key components of heat exchangers and condensers. It provides support for pipelines, promotes effective heat transfer, and provides excellent corrosion resistance under harsh operating conditions. The use of stainless steel tube sheets ensures the lifespan, reliability, and performance of heat transfer equipment in a wide range of industrial applications.

Titanium, due to its excellent corrosion resistance, is widely used as a material for various chemical reaction vessels and heat exchangers, and has been widely applied in fields such as petrochemicals, salt production, power, seawater desalination, and marine engineering. However, titanium has a drawback, which is that it is difficult to process and results in higher costs, especially when used as structural components. The effective solution that people have come up with currently is to use titanium steel composite plates. Titanium steel composite plates can also be used to produce titanium clad steel tube sheets.     What is Titanium Clad Steel Plate? Titanium steel composite plate refers to a metal composite plate coated with corrosion-resistant titanium metal on the surface of ordinary steel plates. Titanium steel composite plates have both the strength of ordinary steel plates as structures and the corrosion resistance of titanium metal. The most important thing is that the cost has been greatly reduced, so they are widely used in various fields. From the production situation of domestic and international titanium steel composite plates, there are currently three main manufacturing methods for titanium steel composite plates: explosive bonding method, thick plate rolling method, and continuous hot rolling method. The titanium steel composite plate produced by explosive bonding method and thick plate rolling method is a thick plate, mainly used as a corrosion-resistant structural material. The titanium steel composite plate manufactured by continuous hot rolling is a thin plate, mainly used in marine civil engineering.     Application fields of titanium steel clad plates   1. Manufacturing of petrochemical and chemical container equipment The manufacturing of petrochemical and chemical container equipment is a traditional application field of titanium steel composite plate materials, and its application volume has always been at the forefront. Titanium has good stability in various acid, alkali, and salt media in the chemical industry, and titanium steel composite plates have also been able to play an irreplaceable role in petroleum refining and chemical plants. Titanium also has special corrosion resistance to bleaching agents such as chlorine dioxide, chlorite, and chlorite. Therefore, titanium steel composite plates also have important applications in bleaching equipment in the textile, printing, and dyeing industries, as well as the papermaking industry.   2. Manufacturing of vacuum salt making equipment Titanium and its alloys have excellent resistance to seawater, chloride solution corrosion, and fluid erosion. The evaporation chamber made of titanium steel composite plate has good effects on slowing down corrosion, preventing salt scaling on the evaporation tank wall, prolonging production cycle, and improving salt quality, greatly reducing the operating cost of salt plant equipment.   3. Seawater desalination field Titanium and its alloys have excellent resistance to seawater, chloride solution corrosion, and fluid erosion, and titanium is non-toxic and harmless, making titanium steel composite plates an ideal material for seawater desalination equipment.   4. Nuclear power equipment manufacturing Thick composite layer (composite layer ≥ 8mm) and large plate width (single sheet area ≥ 20m) titanium steel composite plate are the main materials used for condenser tube plates in nuclear power equipment, and there is a high demand for them, with very broad application prospects. In summary, titanium steel composite plates have excellent corrosion resistance and strength, making them an ideal material for manufacturing equipment in corrosion-resistant environments. With the continuous improvement of the production process of titanium steel composite plates, the application of titanium steel composite plates will also become more widespread and widespread.

Tube sheet refers to the plate used for supporting and protecting pipelines. Pipelines are usually connected to the tubesheet through mechanical fixation or welding after drilling. In addition to serving as a fixing function, the pipe plate can also withstand the fluid and pressure inside the pipeline, reducing vibration and damage during operation. Carbon steel tube sheet, as a common tube sheet material, has a wide range of applications.     Carbon steel tube sheets are mainly composed of iron and carbon, which contain a high proportion of carbon elements, usually between 0.2% and 2.1%. In addition, it may also contain small amounts of elements such as manganese, silicon, and phosphorus, which can improve the strength and corrosion resistance of carbon steel plates. Here are some main advantages and disadvantages of carbon steel pipe sheets:   Advantages: 1. High cost-effectiveness: Carbon steel, as a common and economical material, is more affordable compared to other high alloy materials, making carbon steel pipe sheets the preferred choice in many applications.   2. High strength: Carbon steel is a type of steel with high strength, and its tensile strength is usually between 400-550MPa. This enables carbon steel plates to have high strength and rigidity under heavy loads and high pressures, enabling carbon steel pipe plates to maintain stability and reliability in high temperature and high pressure environments.   3. Good wear resistance: Carbon steel plates can achieve higher hardness and good wear resistance after heat treatment. Therefore, in some situations where wear resistance is required, carbon steel plate is the preferred material.   4. Easy to process and weld: Due to its low carbon content, carbon steel plates have good plasticity and weldability, and can be processed through various methods such as cold processing and hot processing. This makes the manufacturing and installation process of carbon steel pipe sheets relatively simple and efficient, reducing production costs and time.   5. Good environmental performance: Compared to other materials, carbon steel plates have better environmental performance. It can be recycled and reused to reduce resource waste and also reduce environmental pollution.         Disadvantages: 1. Easy to corrode: Carbon steel plates are prone to rusting, which is one of their biggest drawbacks. Due to the high content of iron in carbon steel plates, rust will occur when they react with oxygen in the air. This not only affects the appearance, but also leads to corrosion and damage to the surface of the board. Compared to stainless steel and other high alloy materials, carbon steel is more prone to corrosion in corrosive environments such as humidity, acidity, and alkalinity, which may lead to damage and shortened lifespan of the tube plate. To address corrosion issues, surface coatings or the use of anti-corrosion coatings can be used to enhance the corrosion resistance of carbon steel pipe sheets.   2. Not suitable for high temperature and strong acid environments: Carbon steel has lower temperature and acid resistance than high alloy materials, so in some applications that require high temperature or acidic media, carbon steel pipe sheets may not be suitable. This drawback can be avoided by welding other alloy materials to alter the performance of the contact surface.   3. Heavy weight: Compared to some lightweight alloy materials, carbon steel pipe sheets are relatively heavy, which may increase installation and maintenance difficulties.     In summary, carbon steel pipe sheets have advantages such as high cost-effectiveness, high strength, and ease of processing. However, their corrosion resistance, temperature resistance, and weight need to be evaluated based on specific application environments, and suitable materials should be selected to meet the requirements.

Tube sheets are mainly used in chemical containers, such as heat exchangers, pressure vessels, boilers, condensers, central air conditioning, evaporators, and seawater desalination, to support and fix the column pipes. The metal material not only makes them highly rigid, but also has great thermal conductivity. There are different types of tube plates, each designed for specific applications. The following are some common types of tube sheets and their specific explanations:     1.Floating tube sheet Floating tubesheets are an important component of floating head heat exchangers. It plays a stabilizing role by being installed inside the floating head heat exchanger and supporting the structure of the tube bundle. When the tube bundle is subjected to the impact of the working medium and the pressure flowing through the tube bundle, the floating tubesheet will play a supporting role in preventing the vibration of the tube bundle, thereby ensuring the smooth flow of the medium and the safety inside the heat exchanger. During the operation of the heat exchanger, the tube bundle will expand due to heating and contract after cooling. This kind of thermal expansion and contraction will generate huge stress on the tube bundle, which is prone to cracking and deformation. The floating tube sheet can move up and down, allowing the tube bundle to freely expand and contract with temperature changes, thereby offsetting the stress generated by the tube bundle. Avoiding fatigue damage and leakage of the tube bundle can increase the fluid dynamic interaction between the tube bundle and the shell, and improve the heat transfer efficiency of the heat exchanger. Floating tube sheets are widely used in various types of heat exchangers, especially in fluids with high convective heat transfer coefficients, and their effects are more pronounced. When designing a heat exchanger, parameters such as the length, width, thickness, and floating rod length of the floating tube plate need to be selected according to specific circumstances to ensure the stability and efficiency of the heat exchanger.     2. Fixed tube sheet Fixed tube sheet also known as tube fixing fixture. It is a device used to fix and protect pipeline systems. It can ensure the stability and safety of pipeline systems. It is usually used to fix tube plate heat exchangers, and the two end tube plates are connected and fixed to the shell by welding. The structural feature is that a tube bundle is installed in the shell, and the two ends of the tube bundle are fixed on the tube plate through welding or expansion joint. The tube plates at both ends are directly welded to the shell, and the inlet and outlet pipes on the shell side are directly welded to the shell. The flange at the outer edge of the tube plate head is fastened with bolts, and the inlet and outlet pipes on the tube side are directly welded to the head. Several baffles are set inside the tube bundle according to the length of the heat exchange tube. The tube side of the heat exchanger can be divided into any number of channels through a diaphragm.   Fixed tube sheet heat exchangers have the advantages of simple structure, low manufacturing cost, convenient cleaning, multiple tube passes, double shell passes, and wide specification range, and have been widely used in engineering. It is difficult to clean the shell side. Not suitable for dirty or corrosive media. If the expansion difference is large, we can install an expansion joint on the shell to reduce the thermal stress caused by the temperature difference on the shell side. It has the advantages of small bypass seepage, less use of forgings, low cost, no internal leakage, and a heat transfer volume 20%~30% larger than that of floating head heat exchangers.    

A CNC machined tube plate refers to a tube sheet or plate that has undergone precision machining using a Computer Numerical Control (CNC) machine.  CNC machining involves the use of computer numerical control to automate and control the movement of machining tools and equipment. This technology allows for precise and accurate shaping, cutting, and drilling of materials, including metal plates used in various applications.   Information on CNC machining tube plates 1. Tube Sheet in Heat Exchangers: In the context of heat exchangers, a tube sheet is a plate that separates the fluid in the tubes from the fluid in the shell of the heat exchanger. CNC machining can be used to create precise holes in the tube sheet for the tubes to pass through.   2. CNC Tube Cutting: This could refer to the process of using CNC machines to cut tubes into specific lengths or shapes. CNC tube cutting is commonly used in industries such as automotive, aerospace, and construction.   3. Tube Plate in Structural Engineering: In structural engineering, a tube plate might be a component used in the construction of steel structures, such as trusses or frames. CNC machining can be employed to create precise cuts and holes in these plates.     CNC machining tube plate 1. Hole Drilling: CNC machines can accurately drill holes in tube plates to accommodate tubes in heat exchangers or other systems. The hole patterns need to be precisely designed to ensure proper alignment and fit.   2. Milling and Cutting: CNC milling machines can be employed to cut and shape tube plates according to specific designs and requirements. This can include creating intricate patterns or features on the surface of the tube plate.   3. Surface Finishing: CNC machining can be used to achieve a smooth and precise finish on the surface of the tube plate. This is important for both functional and aesthetic reasons, depending on the application.   4. Customization: CNC machining allows for a high level of customization. Tube plates can be machined to exact specifications, accommodating different sizes, hole patterns, and materials based on the requirements of the specific application.     CNC machined tube plates are commonly used in the construction of heat exchangers, boilers, and similar equipment where precise alignment and secure attachment of tubes are essential for efficient heat transfer. The use of CNC machining ensures the production of high-quality, accurate, and repeatable tube plates in various industrial settings.    Relying on the top processing equipment cluster, wuxi changrun can provide multiple processes from material to cutting, beveling, welding, heat treatment, vertical turning, drilling and so on; Capable of processing tube plates and folding plates made of diversified materials such as pure titanium, stainless steel composite, high-specification stainless steel and various high-strength steels.