It is made of natural flake graphite, carborundum, and other refractory material.
It is used wildly to metallurgical Au, Ag, Cu, Al, Pb, Zn, etc. carbon, non-ferrous metals, middle carbon steel and rare metals, etc. It can help with a high purity of metallurgy and has the characteristic of temperature resistance, good heat conductivity and long durability.

※ Physics:

Refractory	Appearance　Prosity	Bulk　Density	Crushing　Strength
≥1650℃	≤30%	1.7g/cm3	≥8.5MPa

※ Chemical composition:

C%	SiC%	Al2O3%	SiO2%
20~45	1~40	2~20	3~38

※ Specification:

1#, 2#, …, 30#, 40#, 80#, 150#,200#～3000#. Others special requirements is also available on request.