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Furnace Heatshields – Refrex®

Introduction to Refrex® Heatshields

Refrex® heatshields are high-temperature flexible heatshields for surface protection of furnace internals (e.g. process tubes, riser tubes, hangers, and brackets) against too much radiation heat.


Refrex® heatshields comes in two different temperature grades :

Refrex® 1400 Fabric for Maximum Temperature of 1,370°C

Refrex® 1200 Fabric for Maximum Temperature of 1,200°C

Refrex® fabrics are woven with threads made with different roving. The roving is assembled on a specified number of Refrex® filaments with a fibre diameter of 10-12 micron.

Properties Of Refrex® 1200 And 1400 Filaments And Textiles

  • Non oxidizing
  • Non hygroscopic
  • Chemically inert
  • Low conductivity
  • Good abrasion resistance

Key Advantages

  • Custom made.
  • Prevents ageing acceleration of tube skin surface and welds of furnace internals.
  • Decreases coke-forming in radiant coils and tubes.
  • Shields sections of process tubes susceptible to hotspots.
  • 60% reflection rate of radiant heat.
  • Shorter lead time.
  • Easy to install.
  • Engineered to last.
  • Removable and reusable.
  • Lightweight

Moreover, the heatshields, tie-cords and sewing yarn are made out of 100% Refrex® material, which can withstand up to 1200°C (for Refrex® 1200) and 1370°C (for Refrex® 1400) flue gas temperatures.

All other materials used in the heatshields such as ceramic buttons and insulation materials are also able to withstand these high flue gas temperatures.

Refrex® Heatshield on Hangers Before Firing

Refrex® Heatshield on Hangers After 4 Years of Firing

Refrex® Heatshields Applicationas

  • Process Tubes
  • Riser Tubes
  • Hangers
  • Manifolds

Refrex® Heatshield Protection from Radiant Heat Installed on a 180° Half Tube

Refrex® Heatshields Protection Against Radiant Heat for Riser Tubes

The Refrex® heatshields are attached with tie-cords, sleeving and ceramic buttons or buttonholes. These accessories make the heatshields easier to removed and reinstalled after inspections.

Refrex® Heatshields
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