Precision Low-Fin Stainless Steel Rolling Blade for Integral Fin Production
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Precision Low-Fin Stainless Steel Rolling Blade

High-precision rolling discs for the integral formation of low-profile fins on stainless steel tubes, optimized for compact heat exchanger efficiency.
Fin Density Range:
16 - 40 FPI (Fins Per Inch)
Blade Material:
Premium Tungsten Carbide / High-Vanadium Die Steel
Fin Height Range:
0.5mm - 1.5mm (Integral)
Dimensional Accuracy:
±0.01mm for Pitch and Profile

Технические характеристики

Integral Cold-Rolling Mechanics

Unlike applied or welded fins, integral fins are formed by rotating rolling blades that apply intense localized pressure to the tube OD. This 'displaces' the metal into a helical fin shape while maintaining a continuous grain structure between the fin and the tube wall.
  • No risk of fin separation under thermal cycling
  • Consistent wall thickness maintenance beneath the fin
  • Improved resistance to vibration and thermal shock

Surface Area & Thermal Performance

The primary goal of low-fin rolling is to overcome the air-side or shell-side heat transfer resistance. Our precision blades ensure exact fin profiles that maximize the area-to-volume ratio.
Fin Density (FPI) Surface Area Ratio Typical Applications
19 FPI 2.2x Area IncreaseProcess Oil Cooling
26 FPI 2.8x Area IncreaseGas Condensers
32 FPI 3.2x Area IncreaseRefrigeration Evaporators
40 FPI 3.5x+ Area IncreaseAerospace / Ultra-Compact

Heat Exchanger Optimization

Nexmek's low-fin tooling allows engineers to design smaller, lighter, and more efficient shell and tube heat exchangers for critical industries:
  • Petrochemical Vapor Phase Condensers
  • Lube Oil Cooling in Power Generation Turbines
  • Chemical Plant Solvent Recovery Units
  • Advanced HVAC Water-Cooled Chillers