Name: China Stainless Wrapped Finned Tube Suppliers, Manufacturers, Factory - Wholesale Price - Torich
Brand: Torich
SKU: 285652421

Products Description

Our Advantages

1. Strong Corrosion Resistance

Our Stainless Wrapped Finned Tubes are made of high-quality stainless steel such as 304L, 316L, 309S, and 321. Through rigorous raw material testing, they resist corrosion from water, chemicals, chlorides, and other substances, extending their service life in harsh environments.

2. High Heat Transfer Performance

Our tubes are manufactured using CNC finning machines to ensure precise fin height, spacing, and thickness, guaranteeing a fin thickness tolerance of ≤0.01 mm. This ensures excellent heat transfer performance, crucial for heat exchangers.

3. Surface Quality

Our base tubes are manufactured using a cold-drawing process and undergo pickling, passivation, and ultrasonic cleaning to ensure a clean, high-gloss surface free of contaminants.

4. Mechanical Stability

Our tubes utilize a mechanical tension winding process, ensuring precise bonding between the base tube and fins, reducing the risk of fin loosening during thermal cycling or vibration. Fin bonding strength testing ensures fin quality.

5. Quality Control

TORICH finned tubes undergo a rigorous, multi-stage quality control process to ensure reliable heat transfer performance, long service life, and full compliance with international standards. Each tube is inspected from raw materials to final packaging to guarantee consistent fin dimensions, strong adhesion, and structural integrity.

6. Customization Services
We offer customized tube sizes, fin materials, and surface treatments such as polishing and anti-corrosion coatings, manufactured according to customer drawings. Customers can also request additional testing beyond standard ASTM requirements.

application areas

Industrial Heat Exchangers: Shell and tube heat exchangers, condensers, and evaporators
Power and Energy: Boiler economizers, waste heat recovery units
Petrochemicals and Refining: Process gas heaters, reboilers, and condensers
Oil and Gas: Gas dehydration units, offshore platform heat exchange systems
HVAC and Refrigeration: Industrial heating coils, air heating/cooling coils
Marine and Shipbuilding: Seawater heat exchangers, engine cooling systems

Steel grade

304L: Excellent corrosion resistance and formability, suitable for most air-cooled heat exchangers.
309S: Capable of withstanding temperatures up to 1000 degrees Celsius, specifically designed for high-temperature oxidizing and thermal shock environments.
316L: Best suited for chloride, marine, and chemical environments, with excellent pitting corrosion resistance.

Chemical Composition

Element	C	Mn	Si	P (max)	S (max)	Cr	Ni	Mo
304L	≤0.030	≤2.00	≤1.00	≤0.045	≤0.030	18.0–20.0	8.0–12.0	-
309S	≤0.080	≤2.00	≤1.00	≤0.045	≤0.030	22.0–24.0	12.0–15.0	-
316L	≤0.030	≤2.00	≤1.00	≤0.045	≤0.030	16.0–18.0	10.0–14.0	2.0–3.0

Mechanical Properties

Property	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)
304L	≥485	≥170	≥35	≤192
309S	≥515	≥205	≥40	≤192
316L	≥485	≥170	≥40	≤192

Possible Alternative Grades

Alternative Grades	Reasons
Incoloy 800 / 800H	It exhibits excellent high-temperature creep and fracture strength, making it suitable for heat exchangers operating at temperatures above 600–800°C.
Inconel 600 / 625	It possesses top-tier corrosion resistance and oxidation resistance, making it suitable for high-temperature flue gas heat exchangers.
904L	It exhibits superior resistance to pitting corrosion, crevice corrosion, and chloride corrosion, making it suitable for seawater desalination plants.