Gold Member Since 2014
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Shanghai Gongtao Ceramics Co., Ltd.

Alumina Ceramics Crucible, Ceramic Crucible, Classic Shaped Crucible manufacturer / supplier in China, offering Various Size & Material Alumina Cylindrical Crucibles, Infrared Lamp Tube for Sauna Heater, Sauna Tube Heater and so on.

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Various Size & Material Alumina Cylindrical Crucibles

FOB Price: US $0.1 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $0.1/ Piece
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Production Capacity: 50000 PCS/Year
Transport Package: Plywood Case
Payment Terms: L/C, T/T, Money Gram, Western Union

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Basic Info
  • Model NO.: GT-0021
  • Type: Heat-Resistant Material
  • Feature: Long Time Materials
  • Trademark: SHANGTAO
  • Origin: Shanghai
  • Shape: Cylindrical, Crucible
  • Refractoriness (℃): Refractoriness> 2000
  • Material: Alumina
  • Specification: RoHS
Product Description

Specification: 5ml 10ml 15ml 20ml 25ml 30ml 50ml 100ml 150ml 200ml-2500ml


  1. High alumina purity:al2o3>99%,good corrosion resistance.
  2. High temperature resistance,1600C in long use,1800C in short use.
  3. Good thermal shock,no easy to crack.
  4. High slip casting density 
    Various Size & Material Alumina Cylindrical Crucibles
    Various Size & Material Alumina Cylindrical Crucibles
ItemAlumina milling pot
Chemical componentAl 2 O 3≥99
R 2 O≤0.2
Fe 2 O 3≤0.1
SiO 2≤0.2
Vol.density(g/cm 2 ) ≥3.80
Apparent Porosity(%)<1
Bending Strength(Mpa)>350
Compression strength
Permittivity ∑(1MH z )2
The max.operating temperature1800

PurposeMain purpose of crucible and sagger  is as a container for analysis and firing of material and product applied in various industries. For example: analysis of coal, melting of the metal, analysis and firing of chemical raw materials, analysis and melting of glass, analysis and firing of rare earth  materials and mineral,firing of high
temperature items such as ceramic products and melting of single-crystal raw materials.
UseUnder normal circumstances,firstly put  the items which need to be analyzed and fired into the crucible or sagger.Then heat. The speed of heating and drop in temperature are  according to the characteristics of equipment and products, fast or slow.Because of the thermal expansion of raw material which the crucibles and saggers are made of, too quick heating or cooling will easily lead to cracking of  the crucibles and saggers.The best way is slowing down,which can prolong the life of them.
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