What is a low fin tube and how does it improve heat exchanger performance?

Low fin tube has external helical fins machined or roll-formed into the tube surface, increasing external heat transfer area by 3–7× versus plain tube. This dramatically improves the overall heat transfer coefficient (U-value), enabling a more compact or thermally efficient heat exchanger design.

What fin specifications does TeCarve supply?

Standard low fin tubes: OD 8 mm to 38 mm, wall thickness 0.5 mm to 2.5 mm, fin height 0.3 mm to 1.3 mm, and fin density 16–26 fpi (fins per inch). Custom fin geometry (height, pitch, profile angle) is engineered for specific thermal and pressure-drop requirements.

What grades of stainless steel are available for low fin tubes?

Low fin tubes are available in grades 304, 316L, 316, 321, and duplex 2205. Grade 316L is standard for chemical and offshore heat exchanger service. Duplex 2205 is chosen where superior stress corrosion cracking resistance to chlorides is required.

What standards apply to stainless steel low fin tubes?

Base tube properties comply with ASTM A249, ASTM A213, EN 10216-5, EN 10217-7, and ISO 1127. Fin geometry conforms to TEMA standards for finned tube heat exchangers. Each production lot is hydrostatically tested and supplied with an EN 10204 3.1 Mill Test Certificate.

When should I choose low fin tube over plain tube in a heat exchanger?

Low fin tube is preferred when the shell-side (gas or low-velocity liquid) heat transfer coefficient is significantly lower than the tube-side – typically in gas coolers, air-cooled condensers, and steam heaters. It can reduce the required heat transfer surface area by 50–70% versus plain tube.

Low Fin Stainless Steel Tubes for Heat Exchangers

Name: Stainless Steel Low Fin Tube
Brand: TeCarve
Availability: InStock

China Stainless Steel

stainless steel
low fin tube

TeCarve’s Stainless Steel Low Fin Tube is specifically designed to enhance heat transfer efficiency by increasing the external surface area without enlarging the overall tube diameter.

These tubes are widely used in air-cooled heat exchangers, condensers, chillers, and evaporators across HVAC, power generation, petrochemical, and refrigeration industries. Made from high-grade stainless steel, they offer excellent corrosion resistance, mechanical durability, and thermal conductivity even under harsh operating conditions.

The integrally formed low fins ensure compact design, longer service life, and reduced fouling. Custom fin height, pitch, and base tube materials are available to match your precise technical requirements.

Specifications

• Outer Diameter: 8mm – 38mm

• Wall Thickness: 0.5mm – 2.5mm

• Fin Height: 0.3mm – 1.3mm

• Fin Density: 16 – 26 FPI (Fins per Inch)

• Length: Up to 12 meters (customized lengths available)

• Tube Type: Seamless or Welded

• Grades: 304, 304L, 316, 316L, Duplex SS

• ASTM (USA): A249 / A213

• EN (Europe): EN 10216-5 / EN 10217-7

• JIS (Japan): JIS G3463 / JIS G3459

• GB (China): GB/T 24593 / GB/T 13296

• ISO: ISO 1127

Standards

Features

• Enhanced external surface area

• Excellent corrosion and heat resistance

• Compact design, space saving

• Long service life, minimal maintenance

• Air-cooled and shell-and-tube heat exchangers

• Condensers and evaporators in HVAC and refrigeration

• LNG and cryogenic systems

• Waste heat recovery and industrial coolers

Applications

Quality Control

• Fin integrity and uniformity inspection

• Ultrasonic and eddy current testing

• Surface finish and dimensional precision checks

• Custom testing and third-party inspection available

packaging

PVC Wrapping
& End Caps

Custom Barcoding
& Labeling

Anti-Corrosion
& Moisture Protection

Seaworthy Wooden Cases & Pallets

Low Fin Tube Factory & Inspection Photos

Real factory, inspection, packaging and loading photos from TeCarve gallery pages.

Tailored Solutions, Timely Fulfillment

CUSTOMIZATION
& DELIVERY

Flexible Custom Manufacturing

We tailor stainless steel low-fin tube by outer diameter, wall thickness, fin height, fin density, requested length, material grade, and seamless or welded tube construction.

Low MOQ & Rapid Prototyping

Small batch customization and sample production are supported, helping you shorten your development cycle and market entry.

Optimized Lead Time

Standard products ship within 7–10 days. For custom orders, lead times typically range from 2 to 4 weeks depending on complexity and volume.

Global Logistics & On-Time Delivery

For low-fin tube exports to over 50 countries, seaworthy wooden cases and pallets protect fin geometry, supported by anti-corrosion and moisture protection for long-distance transit.

Contact TeCarve

Get in touch with TeCarve for premium stainless steel tubing solutions. Global delivery, precision manufacturing, and reliable service. If any need, please send email to sales@tecarve.com.

Stainless Steel Low Fin Tube