Finned steel tube
Stud fin tube is made by electrical Resistance welding specially formed Studs(Round pins ) in rows around the tube. The Studs can be supplied in a variety of Sizes and shapes. Also named pin fin tube.Stud tube have a very high heat transfer efficiency.The heat exchange efficiency is equivalent to 2-3 times that of the bare pipe.
High Frequency Welded fin tube also called solid type fin tube,use steel or stainless steel strip directly welded to tube surface by HFW.Can improving heat transfer efficiency much more than bare tube.Due to the tight welding of the fins to the base tube, these finned tubes are often used in vibrating conditions.Fin type have Serrated fin and flat fin.
High accuracy Laser welded fin tube same with HFW fin tube,use steel or stainless steel strip directly welded to tube surface but by high accuracy laser welded.Welding penetration is nealy100% between fin and tube
L type fin tube, The fin is helically wound around the base tube forming a strong mechanical contact between the tube and fin, thus improving the heat transfer efficiency.Also named Wrap On fin tube. This also give considerable corrosion protection to the base tube.
KL type fin tube same as L fin tube,except that the base tube is knurled before application of the fin foot.Also named Wrap On Knurled type fin tube.After application,the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between fin and tube,Resulting in improved heat transfer efficiency.
LL fin tube Same as L fin except the fin foot is overlapped giving more corrosion protection. Also named Over Lapped fin tube. The fin is helically wound around the base tube forming a strong mechanical contact between the tube and fin, thus improving the heat transfer efficiency.This type of finned tube is often used as an alternative to the more expensive extruded type fin in corrosive environments.
Spiral fin tube,use carbon steel or stainless steel strip direct spiral in tube surface for improving heat transfer efficiency.Fin bottom touch tube surface but not bonded together,keep by Tension of the steel belt itself, both end fins can be permanently bonded to the tube by using solder.Cost is low than HFW fin tube.Also named Crimped fin tube.
G fin tube,the fin strip is wound into a machined groove on the tube surface and securely locked into place by back filling with base tube material.Also named imbedded fin tube. G fin tube have exceptional heat transfer efficiency at higher tube metal temperature.
Low fin tube forming short fins in tube wall that greatly increase the surface area over smooth tube. The fins are Integral formed into the tube wall so the outside diameter of the fins are not larger than the pre-finned smooth tube.
Bimetal Extruded Fin tube, use base tube insert Aluminium tube, directly extruded the Aluminium into wanted fin specification. Fin and tube surface are tight touch thus improving the heat transfer efficiency. This also give considerable corrosion protection to the base tube.
Shandong HengdingSheng Steel Co., Ltd. is a professional carbon steel pipe manufacturer with ISO CE certificate and a large factory with a productivity of 500,000 tons per month. We supply from wall thickness 0.5-300mm, including seamless carbon steel pipe and welded carbon steel pipe. Custom sizes available. We have large stocks for fast delivery, and provide free samples and customized services. The main markets are distributed in Europe, North America, South America, Africa, Southeast Asia and Oceania. The company has established stable cooperative relations with customers in more than 100 countries and regions.
Technical parameter of Studded Tube
Specification
Our high-efficiency finned tubes are manufactured in carbon steel, stainless steel, and alloy steel materials, offering a wide range of base tube diameters and fin heights. Available in various fin types—such as L-foot, G-foot, and embedded—and configurations including solid or segmented fins, these tubes deliver superior heat transfer performance, making them ideal for boilers, heat exchangers, and air coolers. Custom material combinations for tubes and fins, along with specialized surface treatments, can be provided to meet specific application requirements.
Our finned tubes are manufactured using advanced high-frequency welding and precision rolling technology, featuring automated fin forming with consistent pitch control (±0.2mm), in-line tension testing for fin bond strength verification, computer-controlled tube straightening systems, and non-destructive eddy current testing for quality assurance. The manufacturing process ensures strict dimensional tolerances including fin height (±0.1mm) and tube outer diameter (±0.05mm), guaranteeing optimal heat transfer performance and structural reliability.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.