China Ceramic Alumina Tube manufacturer

GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging

Product Details:
Place of Origin: China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MCT.009
Payment & Shipping Terms:
Minimum Order Quantity: 100pcs
Price: Negotiable
Packaging Details: Vacuum packaging and export carton
Delivery Time: 28~35 days
Payment Terms: T/T, Western Union, MoneyGram, Paypal
Supply Ability: 10000pcs/month

Detail Information

Product Name: Ceramic Metallized Tube Type: Ceramic Parts
Raw Material: 95%-99% Alumina Ceramic Density: 3.6-3.90g/cm3
Color: White Shape: Irregular
Size: Size Customized Package: Vacuum Packaging
Usage: For Electrical Vacuum Devices
High Light:

thermocouple protection tubes


ceramic vacuum interrupter

Product Description

Various Size High Insulation GDT Alumina Metallised Ceramic Tube

Specification of metallised ceramic tube:

1. Raw material: 95~99.5% alumina(Al2O3), zirconia(ZrO2), Beryllia (BeO) optional
2. Dimension capability:  min. the inner diameter can be 1mm, max. the outer diameter can be 800mm
3. Types of metallized ceramic tube: both end open, one end closed, multiple holes
4. Precision process: CNC machining, fine grinding, drilling, laser cutting and so on
5. Surface treatment: external and internal polishing, glazing and so on
6. Surface quality: free of cracks, bubbles without any foreign contamination on the internal and external surface
6. Metallization types:  Molybdenum (Mo-Mn) only, Silver (Ag) only,  Molybdenum + Nickle (Ni) plating, Tungsten + Gold (Au) plating
7. The thickness of metallization : Mo/Mn with 15~40 micros, Ni plating with 2~6 micros, Ag plating: 20~70um, Au plating: 0.2~1um


Prime features of metallised ceramic tube:

● High bonding/brazing strength over 150Mpa at mm2       ● Min. electric resistance and vacuum tightness  less than1×10-11 Pa•m3 / s

● High mechanical strength, insulation strength                  ● Anti-chemical, anti-aging without corrosion in comparison with metals

● Super wear resistance with long service life



Description of metallised ceramic tube:

Many technologies have been used to join ceramics to metals, or ceramics to ceramics. Brazing is a desirable method for joining process because of its capability for joining dissimilar materials, high reliability and precision production tolerance. 

To join ceramics to itself or to metal, the critical problem is the poor wettability of ceramics by filler alloys.  When a metal layer applied on a certain surface of ceramic parts, it will help to fix the poor wettability well. That's why metalized ceramics play a very important role between ceramics to ceramics, ceramics to metals joining technology.

We have been making a variety of ceramic metallization parts with different materials, different designs, different specifications. Many amazing solutions were to be supplied to our customers to reach their toughest technical challenges.

 GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging 0  GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging 1  GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging 2   


Typical application of metalized ceramic components

GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging 3

Metallized ceramic insulators are widely used in electronics, high-vacuum technology, sensors, and medical fields, like vacuum interrupters, electron tubes, feedthroughs, medical linear accelerators/ power tubes, photomultipliers, X-ray tubes, and pressure sensors.



Packaging proposal and transportation

1. Vacuum packaging with drier as the inner package;  2. An exported carton as the outer package; 3. The wooden case will be used if needed.

GDT Thin Wall Ceramic Tube Thermocouples Long Service Life Various Size Anti Aging 4



Why choose us?

★ 10+ Years of manufacturing experience in OEM, ODM              ★ Powerful R&D, mass production capability                     

★ In-house comprehensive manufacturing types of equipment     ★  Rigorous quality control system and processes                 

★ Surpassing pre-sales and after-sales service                             ★Abide all orders as the first priority



FAQs (Frequently Asked Questions)

Q1. Are you a factory or trading company?

A: We are a manufacturer. You are welcome to visit our factory.

Q2: Do you send a sample to check?

A: Sure, the sample is free and freight collect.

Q3: When will you ship it?

A: If the products are in storage, we'll ship within 48 hours

Q4: When can I get the price?

A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.

Please call us or tell us in your email so that we will proceed with your inquiry as a priority.

Q5: Is it available to provide customized products?

A: We always support custom-made demand as per different materials, dimensions, and designs.

Q6: How to ensure quality?

A: The dimension out of any batch will be carried out sampling inspection per international AQL standard. A 100% cosmetic inspection will be done.

Q7: What other products are you dealing with?

A: We focus on a variety of ceramic tubes, ceramic substrates, ceramic sheets, textile ceramics besides metalized ceramics.

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