| Type: | Fin Tube，Heat Exchanger Tube，Stainless Steel Heating Equipment，Three Air Duct Condenser，Refrigerant Liquid Receiver | Application: | Heater Parts，heat Exchanger |
|---|---|---|---|
| Tube Material: | Stainless Steel，Copper Etc，Alloy Steel，Aluminum | Fin Material: | Copper And Steel Etc，Copper，stainless Steel |
| Material: | SUS304 | Product Name: | Spiral Fin Tube Manufacturer |
| Packing: | Iron Steel Frame Wooden Case | Application: | Heat Exchangers， Condensers， Boilers， Evaporators |
| End Treatment: | Beveled， Threaded， Flared， Expanded | Fin Height: | 2mm-50mm |
| Fin Pitch: | 2mm-50mm | Fin Thickness: | 0.1mm-2.0mm |
| Fin Type: | Plain， Serrated， Perforated， Louvered， Embossed | Material: | Copper， Aluminum， Stainless Steel |
| Pressure Rating: | 0.6Mpa-2.5Mpa | Shape: | Round， Square， Rectangular |
| Surface Treatment: | Polishing， Anodizing， Sand Blasting， Galvanizing | Temperature Rating: | -200℃-400℃ |
| Tube Diameter: | 6mm-50mm | Tube Length: | 50mm-6000mm |
| Tube Wall Thickness: | 0.3mm-3.0mm | ||
| High Light: | Pickled Finned Tube， Stainless Steel Corrugated Fin Tube， S30403 Finned Pipe | ||
S30403 304L Stainless Steel Corrugated Fin Tube Pickled Heat Exchanger Tube
Bellows is a cylindrical thin-walled elastic shell with transverse corrugations. Stainless steel corrugated heat exchange tube is a new type of high-efficiency heat exchange tube that replaces ordinary tubes. Strong corrosion resistance， long life， no pitting. ， low price and other advantages.
Bellows are used as elastic sensitive elements of instruments and connecting elements of various pipelines. It has been widely used in mining， petroleum， chemical industry， metallurgy， electric power， thermal power， navigation， aerospace and other engineering equipment to play the role of vibration reduction， noise reduction， energy storage， thermal compensation and media isolation.
The heat transfer coefficient of stainless steel bellows is an important technical index of heat exchange equipment. Strengthening the convective heat transfer on the heat exchange surface is an effective measure to improve the heat transfer coefficient. The enhanced heat transfer of the bellows heat exchanger is achieved through its unique ultra-thin-walled bellows. The corrugated pipe is a thin-walled pipe with a continuous tangent large and small arc， and the inner shape is like a corrugation. The height difference between the troughs causes the fluid to be strongly disturbed.
This disturbance comes from the three-dimensional motion of the fluid inside and outside the tube. Therefore， the degree of disturbance is more intense and thorough. Even if the fluid velocity is very low， it can make it into a state of turbulence. The thin-walled temperature gradient is small， which greatly reduces the thermal resistance of the tube wall and improves the heat transfer coefficient inside and outside the tube， thereby improving the overall heat transfer coefficient.
In order to improve the heat transfer performance of the vertical ammonia condenser， the spiral corrugated steel pipe is used as the enhanced heat transfer element. Enhanced heat transfer of spiral bellows and its application in boilers.
The corrugated pipe is formed by forming spiral grooves on the surface of the pipe through a special rolling process. due to this process
There are spiral rotating indentations on the inner and outer surfaces of the tube. This helps create additional turbulence
Tube. The additional turbulence created by the helical grooves results in a significant increase in the heat transfer of the heat exchanger
to an ordinary tube. Bellows are usually made of thin-walled tubes of various ferrous and non-ferrous materials.
ASTM A213 TP304L Stainless Steel Tube Equivalent Standard Grade
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 |
Stainless Steel 304L Tubes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304L | 0.35 max | 2 max | 1.00 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 13 | – |
304L Stainless Steel Tubing Mechanical Properties
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000， MPa – 515 | Psi – 30000， MPa – 205 | 35 % |
ADVANTAGE
1. Expand the heat transfer area
2. Reduce heat exchanger size and cost
APPLICATION FIELD
1. Vaporizer
2. Oil-air cooling system
3. Stove
4. Food processing industry
5. Chemical process system
6. Heat recovery plant
7. Absorber system
