Heaters, Protective Screens, Tubes

Graphite heaters are used for high-temperature vacuum furnaces or furnaces with neutral atmospheres.

The maximum temperature of graphite heaters is 3000 °C, but when operating in a vacuum it is higher and depends on the level of vacuum. Graphite heaters are sometimes manufactured as separate sections. Flat sectional heaters can be used in electric furnaces with a rectangular workspace configuration, while round ones are for furnaces with a cylindrical workspace.

Graphite heaters are used for high-temperature vacuum furnaces or furnaces with neutral atmospheres.

Carbon blocks are used as construction refractory materials for blast furnaces and electric furnaces, electrolyzers, for thermal and chemical protection, etc. Carbon blocks are substitutes for refractory materials; they are advantageously different from the latter in that they can operate at higher temperatures (over 2000°C) and in aggressive environments. For all refractory materials, mechanical properties deteriorate with increasing temperature, while for carbon blocks, conversely, they improve. Carbon-graphite blocks cannot operate in an oxidizing atmosphere at temperatures above 400°C.

Our Production

Graphite grades used for heaters

GE – electrode graphite
GMZ – general purpose low-ash graphite, coarse-grained graphite
MG, MG-1 – structural fine-grained graphite, high mechanical strength
ISEM-1(I-1), WX-4, WX-5 – isostatic structural fine-grained, high-density graphite, thermally resistant
Heater shapes and sizes can vary; main types include cylindrical, tubular, flat, slotted, and plate-type.

Graphite grades used for protective screens, thermocouple sheaths, and thermometer sheaths:

GE – electrode graphite
GMZ – general purpose low-ash graphite, coarse-grained graphite
MG, MG-1 – structural fine-grained graphite, high mechanical strength
MPG, MPG-6, MPG-7 – structural, fine-grained, high-strength graphite, thermally resistant
ISEM-1(I-1), WX-4, WX-5 – isostatic structural, fine-grained, high-density graphite, thermally resistant
SG-P – silicified strong graphite

Graphite grades for lining products:

GE – electrode graphite
GMZ – general purpose low-ash graphite, coarse-grained graphite
MG, MG-1 – structural fine-grained graphite, high mechanical strength

Chemical Resistance



Tile weight ~ 0.44 kg.
Tile dimensions: 125x195mm, thickness 10mm.

Physical and Mechanical Properties
Density (g/cm³), min. 1.75
Gas permeability at 0.2 MPa pressure: impermeable
Flexural strength (MPa), min. 22
Specific impact toughness, kJ/m², min. 118
Heat resistance (Matersson method), °C 115