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Reliable Metal Castings With Less Headaches

Proudly Located in Titusville, PA. USA

Contact Us

We Source, Fabricate, and Certify

Finished Metal Castings & Components

Call us now - 814-827-9455

Technical schematic drawing of an electrical enclosure labeled 'THERMA-FAB', showing assembly and connection details, with multiple views and components including springs, connectors, and wiring.
Close-up of a metal spring-loaded mechanical latch or switch mounted on a gray metal plate, with four screw holes at each corner, resting on a wooden surface with a blurred background.

Furnace Observation ‘Peep’ Doors

We produce custom cast iron observation access doors and parts for the petrochemical industry. Custom design and assembly. Casting, machining, engineering.

Click HERE to Get a Quote
Diagram of a furnace with labeled parts including cooling air discharge, slag inlet, flue gas, burners, air, rabble arm at each hearth, and ash discharge.
A cylindrical metal rod with attached components lying on a white surface in a workshop or factory setting.

Hearth Furnace Rabble Arms

Therma-Fab, Inc. produces quality sand castings in a variety of materials, including iron (ferrous and nonferrous), steel, ductile, specialty alloys, and stainless.  In addition, investment casting is available.  Casting orders are accepted for both small and large quantities.

Click HERE to Get a Quote

Our Services

  • Two black plastic pallets stacked on top of each other, each with a grid-like structure and circular cutouts.

    Products

    Furnace Trays

    Rollers

    Radiant Tubes

    Tubs Sheets

    Muffles

    Retorts

    Rabble Arms

    Observation Doors

  • Metal brackets and pieces arranged on a wooden pallet in an industrial setting.

    Materials

    Carbon Steel

    Heat Resistant Alloys

    Stainless Steel

    Cast Iron

    Ductile Iron

    Specialty Alloys

  • Three metal brackets on a light-colored wooden surface with cables underneath.

    Services

    Casting

    Stamping

    Machining

    Welding

    Fabrication

    Pattern Making

    Engineering

A person wearing a welding helmet and blue work jacket welding metal pieces together in a workshop with brick walls and welding equipment in the background.

Welding

MIG, TIG, and stick welding by trained, certified, and experienced welders.

A mechanical enclosure with transparent window, mounted on a metal panel, labeled 'Therma-Fab'.

3D Drawings & CADD Services

Update or Convert old drawings to 3D - we’ll draw it for you!

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Investment Castings

Tuyere Production Specialists

Investment or sand castings, we are experts at the production and machining of furnace and hearth tuyeres.

3D rendering of metallic cylindrical mechanical part with a central hole.
A metallic bolt or screw with a hexagonal head and a partially threaded cylindrical body.
Three metallic sockets of different sizes arranged on a textured surface with a blurred brick wall background.
Six metal drill bits arranged vertically inside a wooden box.
Two industrial valves with threaded ends and black bodies, placed on a light-colored surface.
Several gray cylindrical objects with red mesh covers on top, arranged on a workbench in a workshop.

Solving Your Problems

Sand & Investment Castings

Iron, steel, ductile, alloys, & stainless sand casting

Investment castings

We have incredible Chinese sources too!

Fabrication

Have a project? We can fab it!

Petrochemical Manufacturing

Therma-Fab, Inc. has been a supplier of cast iron observation door assemblies for the petrochemical Industry for over 10 years.  Tube Sheets - Tube Supports - Hoops and Tees

Machining

Therma-Fab, Inc. helps organizations capture opportunities in a changing metals industry, through innovative processes and high performance alloys and technologies.

Heat Treating

We can help with various heat-treating projects. Inquire below!

Hearth Furnace Rabble Arms & Teeth

Our multiple hearth incineration furnace rabble arms are the best in the business. Carefully designed to your pattern, our rabble arms are durable, long-lasting, and specialized designed to allow cooling air flow.

Close-up of a drill bit in a CNC machine milling a metal workpiece.
Six cylindrical metal objects with red protective covers and perforated bases, arranged in a row on a workbench in a workshop.
Silver metal mapping or surveying instrument on a wooden surface with a brick background.
Stack of large metallic cylindrical pipes with hollow centers and flanged ends, stored on racks in a warehouse.
Two metallic mechanical components with threaded upper sections and multiple holes on the lower parts, placed on a light-colored surface.
A metal hand saw with a wooden handle hanging on a light gray brick wall.
Metal brackets with circular cutouts in a workshop setting.
Metal brackets with circular holes on a warehouse table, with wooden pallets in the background.
Metal periscope with an open hatch and lens, mounted on a wooden surface.
Close-up of a gray cast iron observation door with the text '5X9 CAST IRON OBSERVATION DOOR' on the top, placed on a wooden surface. The door has bolts, holes, and a metal coil spring attached at the bottom, with a blurred blue brick wall in the back
Electrical junction box mounted on a brick wall with a coil spring securing a latch.
A metal trap with a spring, used for catching animals, placed on a wooden surface.
Metal door with a latch, a spring, and a hinge, labeled as 12x6 bottom hinge observation door.
Close-up of an empty green metal electrical enclosure box mounted on a wall.
Stacks of decorative concrete or stone garden elements on pallets in a workshop or construction site.
Four metal brackets with mounting plates attached, placed on a wooden work surface in a workshop.
An old, rusted industrial switch or circuit breaker mounted on a painted brick wall.
A vintage spring-loaded mechanical switch with a metal housing, mounted on a weathered wooden surface.
Close-up of a metallic electrical junction box with bent wire connectors inside, placed on a wooden surface.
Six metallic bolts with hexagonal heads stored in a wooden crate.
Four large buckets filled with metal blocks, some with rectangular holes, stacked in a driveway.

Meet the Team

  • A woman with blonde hair, glasses, and a yellow shirt sitting at a desk, smiling, in an office setting.

    Lori Utegg

    Operations Manager - Engineering

  • A man with a beard and blue eyes wearing a black backwards cap and a green work shirt stands in a workshop, smiling.

    Mike Weaver

    Shop Manager - Metal Works

  • A man with glasses and a beard, wearing a green shirt and a colorful floral tie, stands with hands clasped in front of a bookshelf filled with books.

    Seth Kerechanin

    President

  • A man wearing safety glasses and a blue work shirt standing in front of industrial equipment.

    Denver Hunt

    Assembly Technician

CONTACT

Diagram of five types of glass doors with different sizes and designs, including hinged and standard glass doors, labeled with specifications and weights.
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NEW BLOG POST!! To learn more about The Unsung Hero of Heat: The Tuyere go to ThermaFab.com !! #therma-fab #thermafab #metalcasting #metalfabrication #heating #welding #tuyere #rabblearm
The rabble arms were all snug in their beds while visions of custom steel fabrication to fit their exact needs danced in their wee little heads
NEW BLOG POST!! Read more about access doors on thermafab.com
NEW BLOG POST!! Meet Mike- Our Master Welder! Go to Thermafab.com to read more!
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Reliable Metal Castings With Less Headaches! Contact us today for your metal casting needs! #metalcastings #fabrication #castings #observationdoors #thermafab