Lord Fin Tube--T.S. Industrial Co.,Ltd

In a heat exchanger composed of ordinary steel pipes (smooth tubes), in many cases, the heat transfer coefficient of the fluid outside the tube and the fluid inside the tube to the tube wall is different. The so-called heat transfer coefficient refers to the heat transfer amount per unit heat transfer area and unit temperature difference (the temperature difference between the fluid and the wall). It represents the heat transfer capacity between the fluid and the wall. For example: The heat transfer coefficient when water condenses on the wall is: 10000-20000w/(m2. ℃) The heat transfer coefficient when water is boiling on the wall is: 5000----10000---- when the water flows through the wall The heat transfer coefficient is approximately: 2000----10000---- The heat transfer coefficient when air or flue gas flows through the wall is: 20----80---- The heat transfer coefficient when air is naturally convective is only: 5----10---- It can be seen that the difference in heat transfer capacity...

Why we choose stainless steel finned tube Sophisticated processing technology for stainless steel finned tubes In the production process, the laser welding stainless steel finned tube is mainly made of 304 stainless steel. It is mainly used for the heat exchange of two media when it is used. The 304 stainless steel finned tube has excellent technology. It is an alternative product for heat exchange and waste heat recovery in boiler, power generation, petrochemical, HVAC, refrigeration, air conditioning and other industries. Laser welded stainless steel finned tube can effectively improve the efficiency of its heat exchanger during use, to a certain extent, effectively extend its life, reduce volume and save materials, the whole rolled finned tube has no contact thermal resistance, heat transfer Good performance, high strength, heat resistance vibration and mechanical vibration, good thermal expansion performance. Laser welded stainless steel finned tube has the characteristics of high ...

Laser welding finned tube is processed by laser welding machine. Laser welding is a welding method that irradiates a high-intensity laser beam onto the metal surface. Through the interaction of the laser and the metal, the metal absorbs the laser light and converts it into heat, melting the metal to form a cooling crystal. Laser welding machine is the most advanced laser welding equipment for finned tubes. Because the welding process is fully automatic and mechanical, the scientific and technological content and quality of laser welding finned tubes are superior to traditional cooling tubes. The laser welding finned tube has a fully automatic welding process, saving manpower costs; secondly, the laser welding fin is firm, strong, and the test with high tensile strength is qualified. Laser welding is more efficient. Advantages of laser welding finned tube The laser welding finned tube (finned tube) fin machine has a high degree of automation, and the welding of the fin to the tube and ...

High efficiency pitted tube refers to make enhancement to the ordinary inside and outside smooth surface of the heat exchange tube, so that the overall heat exchange effect can be significantly improved. High efficiency pitted tube Application Mainly used in lithium bromide air conditioning (non-electric air conditioning) and other industries High efficiency pitted pipe refers to make enhancement to the ordinary inside and outside smooth surface of the heat exchange tube, so that the overall heat exchange effect can be significantly improved. Strengthening form : to the internal and external surfaces of the heat exchange tube, through extrusion and rolling, processing a variety of shapes (spiral squamous tooth, bump and groove, etc.), to change the constant liquid flow field distribution, formation of turbulent flow, or to improve the effect of convection. Meantime through the physical form processing, extending internal and external surface to increase the heat transfer area of the i...

The high-frequency welding finned tube is to use the skin effect and proximity effect of the high-frequency current to heat the steel strip and the outer surface of the steel tube while the steel strip is wound around the steel pipe, until the plastic state or melting, under a certain pressure of the wound steel strip Complete welding. This high-frequency welding is actually a solid-phase welding. Compared with inlaying, brazing (or integral hot-dip galvanizing) and other methods, it is more advanced in terms of product quality (high welding rate of fins, up to 95%), productivity, and degree of automation . Adopt high-frequency current, welding while winding, so the base tube and the fin are basically integrated, and the welding rate is an important indicator to judge the quality of the fin tube. (1) Marking method of high-frequency welding finned tube and fin structure First, use CPG to represent the abbreviation of CHIPIAN GUAN. The structural characteristics, materials, and proces...

The  Studded Tubes  (also known as needle tube) is a cylindrical pin arranged in square or hexagon and welded on the surface of the heat exchange tube equally. The high-efficiency and energy-saving pin tube heat exchange tube group is formed by the assembly and welding of the square or hexagon heat exchange pin tube. Because the pin rib of the pin tube is a cantilever structure with compact structure, the pin rib vibrates under the impact of the air flow, making it difficult for soot to accumulate. In addition, the strong turbulence and erosion of the flue gas make the pin tube heat exchange element have high heat transfer efficiency and strong self-cleaning ability The Studded Tubes is especially suitable for the compact structure of waste heat boiler, oil fired boiler, gas fired boiler and oil heater. Under the same heat exchange, its weight and overall dimension have a significant reduction. Compared with other conventional enhanced heat transfer boiler tubes, the anti ...

In order to understand the application conditions of finned tube, it is necessary to understand the heat transfer process and definition during the operation of laser welded finned tube . The heat transfer of the whole equipment refers to the process of heat transfer from hot fluid to cold fluid through solid wall, and also includes the heat transfer process of tube wall. The strength of the heat transfer process and the size of the heat transfer mainly depend on the characteristics of the convective heat transfer on both sides of the wall. The larger the temperature difference required for the unit heat transfer of the laser welded finned tube, the greater its thermal resistance will become, which is equal to the reciprocal of the heat transfer coefficient, indicating that the greater the heat transfer coefficient, the smaller its thermal resistance. On the contrary, the smaller the heat transfer coefficient, the greater its thermal resistance. The heat transfer coefficient of the ...

Serpentine bend is a special difficult pipe fitting, which can be divided into cold bend and hot bend. Generally, the CNC pipe bending is mainly the products processed by CNC machine, and the processing technology is mainly cold bending, for example, the stainless steel pipe bending is processed by this kind of processing technology. 1： According to the drawing provided by the user, set the parameters of CNC machine. Second: put raw materials into machinery for processing. Third: polish the finished products. If the processing requirements of stainless steel bend are not strict, the common bending machine can meet the requirements. This machine is relatively simple to operate. The bending machine is divided into manual bending machine, hydraulic bending machine and numerical control bending machine. The manual bending machine is divided into mechanical manual bending machine and electric manual bending machine. The hydraulic bending machine can also be divided into: torsional shaft...

ASTM A423/A423M Standard Specification for Seamless and Electric-Welded Low-Alloy Steel Tubes 1. Scope 1.1 This specification 2 covers minimum-wall-thickness, seamless and electric-resistance welded, low-alloy steel tubes for pressure containing parts such as economizers or other applications where corrosion resistance is important. 1.2 The tubing sizes and thicknesses usually furnished to this specification are 1 ⁄ 2to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm] inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification. 1.3 Mechanical property requirements do not apply to tubing smaller than 1 ⁄ 4 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness. 1.4 An optional supplementary requirement is provided and, when desired, shall be so stated in the order. 1.5 The values stated in either SI units or inch-pound units are to...

Laser welding finned tube is one of the earliest and most successful inventions in the process of improving tube heat transfer. When used, this method is still all the various heat transfer methods of laser welding finned tube The most widely used one, not only suitable for single-fin tube heat exchangers, but also widely used in power, chemical, petrochemical, air conditioning and refrigeration engineering. Laser welded finned tubes  are widely used in chemical engineering, power engineering, air conditioning engineering, petrochemical engineering, and refrigeration engineering, such as surface air coolers, air heaters, and fan coils used in air conditioning engineering. The evaporator of the air cooler and the evaporator of the frost-free refrigerator used in the refrigeration project. Laser welding finned tubes are not only suitable for the flow of single-phase fluids in the process of use, but their equipment is also of great value to the heat of phase transformation. Mos...

The air cooler uses ambient air as a cooling medium, and the fan forces air to sweep across the finned tube, so that the high-temperature process fluid in the tube is cooled or condensed. The air cooler unit consists of three basic parts:  finned tube bundle , fan, frame, and auxiliary parts such as shutters, maintenance platform, and ladder. Using natural air as a cooling medium saves precious water resources, reduces the discharge of industrial sewage, and protects the natural environment. Widely used in chemical industry, petrochemical, thermal power plant, polycrystalline silicon, polyvinyl chloride, metallurgical cement, production line waste incineration power plant, etc. The development of the air cooler has gone through three stages, from the steel-aluminum composite round tube fins of the 50s to the  elliptical finned tube  in 70s, and the large flat tube finned tubes of the 90s. It can be said that the air cooler has made great progress. In todays society, e...

H-type fin tube type waste heat recovery device (also known as economizer); H-type fin tube type economizer technology uses H-type fin tube (also known as H-type; the basic form is "H" type and double " H ”type, in-line arrangement; 1) economizer replaces smooth tube economizer with H-type fin tube economizer; 3) H-type fin tube economizer adopts in-line arrangement, H-type fin Put the space; 4) H-shaped fins can get the best blowing because of the straight channels formed on both sides; 6) Energy saving and low power consumption: the economizer used for the generator set can be reduced at least; 7) Simple operation and maintenance; H-shaped fin (fin, rib) tube type waste heat recovery device (also known as economizer) H-type finned tube economizer technology is a high-efficiency heat-saving economizer assembled by using H-shaped finned tubes (also known as H-shaped finned tubes, finned tubes, and butterfly tube). 1. Structure form: The basic form is "H" t...