Ceramic Tubes & Rods
Custom-engineered ceramic tubes, rods and casting pins for investment casting, furnaces, kilns and electrical insulation. From 0.125mm to 1m diameter, lengths up to 5m.
Tags: Casting Pins, Rods & Tubes Furnace Tubes Custom Ceramic Tubes Thermocouple Protection Tubes Fused Quartz Tubes
About this product
Anderman & Company supplies a comprehensive range of ceramic tubes (also known as alumina tubes), rods and casting pins for high-temperature applications across a broad range of industries. We offer solutions tailored for investment casting, furnace and kiln work, and electrical insulation — manufactured from materials selected to suit each application, with the ability to machine to custom specifications including flanges, angled cuts, drilled holes, machined ends and glazing. Our standard stock and scalable production allow us to support both small-batch and high-volume orders.
What that means for you
High temperature resistance
Engineered to withstand extreme temperatures for reliable, stable performance in high-heat environments.
High mechanical strength
Optimised for high-temperature mechanical strength, supporting long-term durability and robust performance.
Thermal shock resistance
Outstanding resistance to rapid heating and cooling cycles, reducing the risk of cracking or structural failure.
Electrical insulation
High-quality alumina, zirconia and mullite materials deliver excellent insulation for critical electrical applications.
Customisable dimensions
Diameters from 0.125mm to 1m and lengths up to 5m, with exact specification to your requirement.
Chemical corrosion resistance
Engineered to maintain integrity in aggressive chemical and corrosive industrial environments.
Large volume capacity
Extensive standard stock and scalable production for both small-batch work and high-volume orders.
Reliable performance under extreme conditions, longer component life and consistent operational uptime — with the confidence your process will run smoothly with fewer replacements, less maintenance and improved overall efficiency.
Specs at a glance
| Property | Range | Notes |
|---|---|---|
| Outer diameter | 0.125mm to 1m | Material-dependent |
| Length | Up to 5m | Custom lengths on request |
| Alumina purity | Up to 99.8% | High-purity grades available |
| Custom featuresOuter diameter | Flanges, angled cuts, drilled holes, glazing | Machined to drawingMaterial-dependent |
| Length | Custom lengths on request | |
| Alumina purity | High-purity grades available | |
| Custom features | Machined to drawing |
Individual products in this range
Material options
Our tubes and rods are available in a range of advanced ceramic materials, each suited to specific thermal, chemical and electrical requirements:
– Alumina — up to 99.8% purity
– Mullite — strong, dense option for furnace tubes
– Zirconia — high fracture toughness and thermal shock resistance
– Quartz — high thermal shock resistance and chemical purity
– Silicon Carbide — high thermal conductivity and wear resistance
– Silicon Nitride — excellent mechanical strength and fracture toughness
– Aluminium Titanate — exceptional thermal shock resistance
Where these products work
Other ceramic components
Your questions answered
What size of ceramic tube can you supply?
We supply tubes from 0.125mm to 1m outer diameter, with lengths up to 5m. Standard sizes are held in stock; custom dimensions are available on request.
Can you machine custom features into tubes?
Yes. Custom features include flanges, angled cuts, drilled holes, machined ends, slots and glazed surfaces. Send us your drawing and we’ll work to your specification.
Which material suits high-pressure or atmosphere-controlled furnaces?
Dense materials are required where there’s internal pressure or controlled atmosphere. Alumina or mullite tubes are typically specified — but heating rates must be carefully controlled to prevent cracking.
Do you supply replacement tubes for laboratory furnaces like Carbolite, Leco or Lindberg?
Yes. We regularly supply replacement furnace tubes for principal laboratory and analytical furnaces, typically in dense mullite (EM60) or alumina (EA998) grades.
What's the difference between dense and porous ceramic tubes?
Dense tubes are required where internal pressure or atmosphere control matters. Porous tubes are typically used to support wound heating elements in larger furnaces and kilns, providing lead-outs for cables and burner holes.
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Datasheet, drawing or quote — pick your next step
For custom sizes, special dimensions or unique features, send us your drawing or request a datasheet — our team will help you specify the right tube or rod for your application.