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GY AluminaProtection Tubes · Insulators · Crucibles
Factory storeroom with blue metal shelving stacked with finished ceramic tubes and parts.

Products

Alumina tubes, insulators and crucibles.

Five product families, made in several grades and to your drawing. Grade, maximum temperature and tolerances are confirmed in each quotation.

  1. About fifty long ivory tubes with rounded closed ends, standing in two groups against a white grooved wall.

    01

    Alumina thermocouple protection tubes

    One-end-closed and open-ended ceramic sheaths that protect thermocouples in temperature-measurement instruments and industrial furnaces.

    Configurations
    • One-end closed
    • Open-ended
    • Round
    • Elliptical
  2. Close-up of the end faces of thin cream insulator rods: six-bore rods, a square rod, and two-, three- and four-bore rods, beside a fingertip.

    02

    Alumina thermocouple insulators and multi-bore tubes

    Single-, double- and multi-bore insulators that separate thermocouple wires and provide electrical insulation at high temperature and high frequency.

    Configurations
    • Single bore
    • Double bore
    • Multi-bore
    • Round
    • Elliptical
    • Capillary
  3. Large-diameter ceramic tubes stacked on their sides, showing the open ends and wall thickness.

    03

    High-temperature alumina and corundum furnace tubes

    Open-ended process tubes, large-diameter tubes and custom tubes for laboratory, resistance, electric and heat-treatment furnaces.

    Configurations
    • Open-ended process tube
    • Large-diameter tube
    • Custom tube
  4. Forty-eight identical white cylindrical crucibles, one per cell, in a foam grid inside an open foam-lined wooden crate.

    04

    Alumina and corundum crucibles and boats

    Cylindrical, rectangular and special-shaped crucibles and boats for metallurgy, chemical processing, electronics, glass and laboratory analysis.

    Configurations
    • Cylindrical
    • Rectangular
    • Special-shaped
  5. Special-shaped ceramic parts: T-shaped fittings, flanged pieces and rods of several diameters.

    05

    Custom alumina and industrial ceramic components

    Special-shaped parts made from your drawing or sample, by slip casting, pressing, extrusion or hot pressing.

    Configurations
    • Made to drawing
    • Made to sample
    • Special-shaped parts
    • Pressed and extruded oxide components

Also made

Other product lines

We also make these product lines. Ask about them in your quote request.

  • Special alumina tubes on a plain grey background: square tubes, a slotted channel, a tube with a row of side holes, a spiral-grooved tube and round tubes, with a flared part behind.

    Alumina, corundum, and industrial ceramic tubing

    Round, square, capillary, perforated and threaded tubes, solid-core rods, special shapes.

  • Alumina crucibles and cups in many sizes laid out on a plain grey background, from small cups to large cylindrical crucibles.

    Chemical and laboratory porcelain components

    Including carbon and sulfur analysis tubes used in steel chemical analysis.

  • Ceramic balls, jars, and related mill components

  • Textile wear and friction ceramics

  • Zip-lock bags of short cream multi-bore beads, each marked by hand with its size and 1 kg, on a plain grey background.

    Electrical, heating, and lamp-base ceramics

  • Ceramic rollers and screening components

Other materials

  • Mullite ceramic
  • Partially stabilized zirconia
  • Steatite ceramic
  • Cordierite ceramic
  • Wollastonite ceramic
  • Chrome-corundum ceramic

Property data for these materials is supplied with each quotation. Published datasheets cover high-alumina and corundum.

Request a quote

Send us a drawing, a sample or a part number.

Tell us the dimensions, grade and quantity. A contractual datasheet with current, product-specific test data and tolerances comes with each quotation.

Request a quotesales@gyalumina.com
Custom parts, usually from
100 pcs
Samples for approval
5–10 pcs
Production, usually
25–30 days
Standard sizes from stock, small to bulk orders
~3⁠–⁠7 days