DELLOK High Temperature Carbon Steel Brown Finned Tube

^{Welding Process}

^{Longitudinal Finned Tubes are produced by resistance welding fins in the longitudinal direction along the length of the tube. The fin strip is first formed into a U-shaped channel, such that each leg of the U will form a fin. The channels are cut to the appropriate length and then oriented along the length of the tube and resistance welded in place. The channels are welded in pairs, diametrically opposed- therefore the number of fins specified must always be a multiple of four.}

^{For a given pipe or tube size, the desired heat transfer surface area per unit length of tube can be obtained by specifying the appropriate fin height and number of fins. The maximum number of fins is dependent upon the tube outside diameter — larger OD tube can accommodate a greater number of fins.}

^{Surface Treatment and Protection}

^{Each tube except stainless material will be polished by polishing machine to near white condition before welding. After welding, the finned tubes will be coated for transportation and site storage purpose, normally the coat will provide a period of 3 months prevention, any other coating material for longer prevention is also available as per clients, requirements.}

^{Frequently Asked Questions (FAQ) About Longitudinal Finned Tubes:}

^{1. What Are Finned Tubes Uses?}

^{Finned tubes are particularly useful in the case of air heat exchangers. In an air heat exchanger, the heat transfer is to take place between a liquid and gas. With the heat coefficient of the air side being lower, a finned tube can be exceptionally helpful. A finned tube increases the surface area and thus helps in faster heat transfer between the components.}

^{2. How is fin height calculated?}

^{Length of fin calculator uses Fin length = (Perimeter-(2*Height))/((4*Number of fins)) to calculate the Fin length, The Length of fin formula is defined as the length of the fins required for the effective heat transfer.}

^{3. What is a longitudinal finned Tube?}

^{Longitudinal Finned Tube also called Brown Fintube , which produces by high frequency resistance welding fins in the longitudinal direction with the length of the tubes.}

^{4. What are properties of longitudinal finned tubes?}

^{Improve heat transfer efficiency in efficient space.}

^{Reduces installation space on required heat transfer surfaces.}

^{Reduce the cost of the equipment, and have a high operational reliability.}

^{The pressure drop on the side of the tube is reduced and the operation cost is reduced.}

^{The stiffness of steel tube is improved, and the seismic performance of steel tube is improved.}

^{Enhance heat transfer, reduce flow resistance and metal consumption.}

^{5. What are applications of longitudinal finned tubes?}

^{We supply longitudinal finned tubes for:}

^{double pipe heat exchangers}

^{multi-tube heat exchangers}

^{fire rated heaters}

^{gas coolers}

^{tank heaters}

^{And we are able to accommodate the requirements of various industries, including oil, power, chemical, and petrochemical.}

^{6. How do you control your quality?}

^{We always put quality as the most important thing for customers, and we control the quality from raw material inspection, production checking to water pressure test and strength test. Also the third party can be authorized to check.}

^{Incoming inspection report for bare tube & strip.}

^{Mill test certification for bare tube}

^{Mill test certification for fin}

^{Mill test certification for finned tube}

^{Finned tubes dimension & visual inspection reports}