High-Temperature Furnace Internals & Fabricated Vessels

Wirco fabricates high-temperature vessels and furnace internals for heat treating and industrial furnace operations. Every one is built at our Avilla, Indiana campus across our welding departments. These systems are specialty fabrications, and no two customers run the same system. Each one is built around the furnace it serves.

Fabricated stainless steel retort

Engineered for Longer Service Life

Many furnace internals in service today were built years ago, and original drawings aren't always available. Wirco's engineering and design team reverse engineers existing assemblies. They can also re-engineer them to improve service life and performance, so a replacement doesn't have to be a straight copy of a part that wore out too soon.

Furnace Internals We Fabricate

  • Salt Pots
  • Brazing Muffles
  • Annealing Bells
  • Radiant Tube SupportsĀ 
  • Custom Fixturing

Replacement Industrial Furnace Parts

Pit furnace hanging fixture
  • Furnace Muffles
  • Retorts
  • Salt Lids
  • Pit Furnace
  • Retorts
  • Pit Furnace Liners
  • Vacuum Retorts
  • Walking Beam
  • I-Beam Supports
  • Furnace Door
Large fabricated furnace internal assembly


Fabricated stainless steel furnace muffle


Flanged pit furnace retort
We thank you for your business and hope you consider Wirco for your next alloy purchase.
Cast heat treat fixture