| BRAND: | YH，YHSS，TONG CHUANG | OD: | 20mm OD Min To 219mm OD Max. |
|---|---|---|---|
| Fin Height: | 6-50mm | Fin Thickness: | 0.3-0.5mm |
| Fin Spacing: | According To Customer Requirements. | End: | Flat End， Bevel End |
| FIN MATERAIL: | T12 | TUBE MATERIAL: | TP304，TP304L，TP316L，TP317L，TP321，TP310S |
| High Light: | Carbon Steel Fins Finned Tube， Air Preheater Finned Tube， ASME SA213 Finned Tube | ||
Finned Tube ASME SA213 SMLS T12 Stainless Steel Tube HFW Carbon Steel Fins for Air Preheater
High-frequency welded finned tube is a kind of finned tube， which is mainly welded by high-frequency welding and is a new type of excellent heat dissipation element. High-frequency welded finned tube is welded by high-frequency current， with reliable welding method， excellent performance， small weld seam， and more solid and beautiful radiator surface.
High-frequency welded finned tube is a commonly used heat dissipation element in finned tube radiator. Welding high-frequency welded finned tube on the base tube of the radiator can improve the heat transfer coefficient of the heat exchanger side of the radiator and enhance the heat dissipation effect of the radiator， and the excellent heat dissipation effect makes the finned tube more and more popular.
High-frequency welded finned tubes are welded with high-frequency current， which can increase the compactness of the radiator and improve the safety of the high-frequency welded finned tube radiator during operation. High-frequency welding process is an improved and upgraded process on the basis of the basic welding process， and it is also a better welding process.
The better the welding process used for high-frequency welded finned tube， the faster the welding speed， the narrower the weld seam， the more beautiful the appearance of the radiator. The appearance of high-frequency welded finned tube is simple and generous， mainly in silver and grey.
Equivalent steel grade
| Standard | Grade |
| ASTM A213 | T12 |
| GB5310 | 15CrMoG |
Chemical Composition of ASTM A213 T12
| Grade | Chemical Composition(%) | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| A213 T12 | 0.05-0.15 | 0.30-0.60 | ≤0.025 | ≤0.025 | ≤0.50 | 0.80-1.25 | 0.45-0.65 |
Mechanical Properties of ASTM A213 T12
| Low Alloy Steels | ||||||
| Grade | UNS Designation | Tensile Strength， min， ksi [MPa] | Yield Strength， min， ksi [MPa] | Elongation in 2 in. or 50 mm， min， % | Hardness | |
| Brinell/Vickers | Rockwell | |||||
| T12 | K11562 | 60 [415] | 32 [220] | 30 | 163 HBW/ 170 HV | 85 HRB |
Base Tube Details
Tube Diameter : 20 mm OD Min to 219 mm OD Max.
Tube Thickness : Minimum 2 mm up to 16mm
Tube Material : Carbon Steel， Stainless Steel， Alloy Steel， Corten steel， duplex Steel， Super Duplex Steel， Inconel， High Chrome High Nickle & Incolloy， CK 20 material and some other material.
Fin material
Alloy steel， Stainless steel High Frequency Welded fins tube， carbon steel High Frequency Welded fins tube Duplex High Frequency Welded fins tube super duplex High Frequency Welded fins tube Air cooler fins tube， Air preheater fins tube.
Extruded fins tube， Serrated fin tubes， L Type fins tube， G Type fins tube， LL Type fins tube， H Type fins tube， KL Type fins tube， HFW fin tube laser welded fin tube.
