TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Heat Exchanger |
| Standard | ASTM,JIS,AISI,DIN,EN |
| Welding line type | ERW,Seamless,seamless and welded,EFW |
| Steel grade | A179 A213 T11 TP304 TP316 Gr6 |
| Thickness | 1mm-40mm |
| Outer diameter | 6-630mm |
| Technique | Cold Rolled Hot Rolled,Cold drawn |
| Brand Name | TORICH |
| Model Number | Spiral Finned Tube |
| Certification | ISO,BV,CE,ROHS,UL |
| Place of Origin | ISO9001 ISO 14001 TS16949 |
View Detail Information
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Heat Exchanger | Standard | ASTM,JIS,AISI,DIN,EN |
| Welding line type | ERW,Seamless,seamless and welded,EFW | Steel grade | A179 A213 T11 TP304 TP316 Gr6 |
| Thickness | 1mm-40mm | Outer diameter | 6-630mm |
| Technique | Cold Rolled Hot Rolled,Cold drawn | Brand Name | TORICH |
| Model Number | Spiral Finned Tube | Certification | ISO,BV,CE,ROHS,UL |
| Place of Origin | ISO9001 ISO 14001 TS16949 | ||
| High Light | Industrial Heat Exchangers Spiral Finned Tube ，High Heat Transfer Efficiency Spiral Finned Tube ，Strong Fin Bonding Spiral Finned Tube | ||
The Spiral Finned Tube, also known as a Welded Helical Serrated Finned Tube, is a type of enhanced heat transfer component made by welding helical fins to the surface of a base tube. The base tube is typically manufactured from carbon steel, stainless steel, or alloy steel, while the fins are usually made from the same or compatible materials. The fins are helically wound and welded onto the tube’s outer surface to increase heat transfer efficiency in air-cooled heat exchangers, boilers, and industrial radiators.
Base Tube Material: Carbon steel, stainless steel, or alloy steel (ASTM A179, A213, A333, etc.)
Fin Material: Carbon steel, stainless steel, or alloy steel
Fin Type: Helical serrated fin (continuous or segmented)
Fin Height: 8–16 mm
Fin Thickness: 0.8–1.5 mm
Fin Pitch: 2.5–10 mm
Tube Outer Diameter: 19–63.5 mm
Tube Wall Thickness: 2–5 mm
Fin Attachment: High-frequency resistance welding
Length: Up to 15 meters (customizable)
High Heat Transfer Efficiency: The serrated fin design creates turbulence in the air stream, improving overall heat transfer performance.
Strong Fin Bonding: The high-frequency welding process ensures excellent metallurgical bonding between fins and the base tube, ensuring long service life under thermal cycling.
Corrosion and Oxidation Resistance: Suitable for high-temperature and corrosive gas environments.
Customizable Design: Fin dimensions, pitch, and materials can be tailored for specific industrial applications.
Durability: Excellent mechanical strength to withstand vibration, thermal expansion, and contraction cycles.
From a professional manufacturer’s perspective, we focus on several key aspects that customers care most about:
Precision Welding and Straightness Control:
Our advanced high-frequency welding lines ensure fin-to-tube bonding consistency, with tube straightness controlled within ±1 mm/m and minimal distortion.
Dimensional and Tolerance Accuracy:
Tube outer diameter tolerance is maintained within ±0.5%, and fin pitch accuracy is within ±0.2 mm, ensuring optimal heat exchange uniformity.
Extended Service Life:
We employ ultrasonic and eddy current testing to guarantee weld integrity, significantly extending product service life compared to conventional fin tubes.
Material Certification and Traceability:
Each batch of materials comes with full traceability under ISO 9001 standards, ensuring compliance with ASTM/EN/JIS specifications.
Corrosion Protection Options:
Optional surface treatments such as galvanizing, aluminum coating, or epoxy painting are available for enhanced corrosion resistance.
| Grade | Standard | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|---|
| ASTM A179 | ASTM | 0.10 | 0.30 | 0.40–0.70 | ≤0.035 | ≤0.035 | — | — | — |
| ASTM A213 T11 | ASTM | 0.10–0.20 | 0.50–1.00 | 0.30–0.60 | ≤0.025 | ≤0.025 | 1.00–1.50 | 0.40–0.65 | 0.44–0.65 |
| ASTM A213 TP304 | ASTM | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–11.0 | — |
| ASTM A213 TP316 | ASTM | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
| ASTM A333 Gr.6 | ASTM | ≤0.30 | 0.10–0.35 | 0.29–1.06 | ≤0.025 | ≤0.025 | — | — | — |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| ASTM A179 | ≥325 | ≥180 | ≥35 | ≤77 |
| ASTM A213 T11 | ≥415 | ≥205 | ≥30 | ≤163 |
| ASTM A213 TP304 | ≥515 | ≥205 | ≥40 | ≤160 |
| ASTM A213 TP316 | ≥515 | ≥205 | ≥40 | ≤160 |
| ASTM A333 Gr.6 | ≥415 | ≥240 | ≥30 | ≤143 |
ASTM: A179 / A213 / A333 / A556 / A210
EN: EN 10216-2 / EN 10217-5
JIS: JIS G3461 / G3462
GB: GB/T 13793 / GB/T 5310
GOST: GOST 8732 / 8734
Spiral Welded Helical Serrated Finned Tubes are widely used in industrial heat exchangers for air cooling, gas heating, and energy recovery systems.
Power Plants: Air preheaters, economizers, and condensers.
Petrochemical Industry: Process gas coolers, heat recovery units.
Refineries: Air fin coolers, heat recovery steam generators (HRSG).
Steel and Metallurgy Plants: Flue gas waste heat recovery.
HVAC and Refrigeration: Industrial air-cooled condensers and evaporators.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
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