| Tube Standard: | ASTM A213， ASME SA213 | Tube Material: | Stainless Steel， Carbon Steel， Alloy Steel |
|---|---|---|---|
| Type: | Studded Fin Tube | Stud Material: | Carbon Steel， Stainless Steel， Alloy Steel |
| Tube OD: | 25-219MM | Stud Height: | 5-35MM |
| Tube Length: | 18 Meters Max | Stud OD: | 5-20MM |
| Stud Pitch: | 8-30MM | Applications: | Heater Parts，Refrigeration Parts，heat Exchanger，Cooler，Fluid Cooling |
| High Light: | ASTM A213 Fin Tubes， T9 Alloy Steel Studded Fin Tubes， Petrochemical Fire Furnace Finned Tube | ||
ASTM A213 T9 Alloy Steel Studded Fin Tubes， Pin Tubes， Nailhead Pipes For Fired Furnace
ASTM A213 T9 is a specification for seamless ferritic and austenitic alloy steel boiler， superheater， and heat exchanger tubes， which is often used in high-temperature applications in which corrosion resistance and high creep strength are required. ASTM A213 T9 Alloy Steel Studded Fin Tube is made by electrical Resistance welding specially formed round studs in rows around the base tube. The Studs can be supplied in a variety of sizes and shapes. Studded fin tubes have high heat transfer efficiency， which is equivalent to 2-3 times that of the base tube. It can increase the surface of heat transfer coefficient of flue gas to the furnace tube and reduce the amount of base tubes. Heat transfer surface of one studded tube is equivalent to surface of 4 to 10 base tubes.
Studded Fin Tubes are generally used in furnaces and boilers where the surface is exposed to a corrosive environment where very dirty gas streams require frequent or aggressive cleaning. The studded fin tube is one of the heat transfer component which increases the heat exchange area by helically welded studs on the base tube. Studs and base tube form a strong mechanical contact which improves the heat transfer efficiency. ASTM A213 T9 Alloy Steel Stutdded Fin Tube is widely used in applications such as Boilers， Heat Exchangers， Tube Bundles， Radiators， Air Coolers， etc..
Specifications:
| Base Tube Material | Stainless Steel， Carbon Steel， Alloy Steel |
| Base Tube Outside Diameter | 25mm to 219 mm |
| Base Tube Thickness | 3 mm to 12.70mm |
| Tube Length | 2000 mm To 18000 mm |
| Stud Material | Carbon Steel/Stainless Steel/Alloy Steel |
| Stud Outside Diameter | 5mm to 20mm |
| Stud Pitch | 8-30mm Or Customized to Clients Requirements |
| Stud Height | 5mm to 35mm Or Customized |
| Ends | PE， BE， Or As per Client Requirement |
Chemical Composition:
| C， % | Mn， % | P， % | S， % | Si， % | Cr， % | Mo， % |
| 0.15 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.25-1.00 | 8.0-10.0 | 0.90-1.10 |
Mechanical Properties:
| Tensile Strength， MPa | 415 min |
| Yield Strength， MPa | 205 min |
| Elongation， % | 30 min |
| Hardness， HB | 179 max |
Applications:
Water Supply Systems
Transportation Systems
Natural Gas Industry
Fabrication Industry
Shipbuilding Industry
Oil and Gas Industry
Boiler parts
Petrochemical Fire Furnace
Fired Heaters
