high strength clay fireplace bricks

Good resistance to acids, salts and oils High water permeability Competitive price High refractoriness No radiation, no dust

High strength clay fireplace bricks have other characteristics

   

accordin to the consumer 's designs and specifications  excellent thermal resistance and freeze-thaw resistancegood permeability and adjust humidityhigh refractorinessacid erosion, rain erosion resistanthigh strength,

  

      we can supply all kinds of red wall bricks:

ITEM		NL13	SK-30N3	SK32	SK-34N1	NZ42
Refractoriness(SK)		≥32 ≥1710	≥31 ≥1690	≥32 ≥1710	≥34 ≥1750	≥34 ≥1750
Bulk Density g/cm3		≥2.3	≥1.9	≥1.9	≥2.0	≥2.26
Apparent porosity %		≤13	≤26	≤26	≤24	≤20
Cold Crushing Strength MPa		≥49	≥19.6	≥19.6	≥19.6	≥40
Lingar Expasion %  at1000
Rate of lingar Change %   at *2hrs			-0.5~+0.5 1350	-0.5~+0.5 1350	-0.5~+0.5 1400	≤0.2 1350
Soften Yield Point Under Load (T2)  at 0.2MPa		≥1450		≥1350	≥1350	≥1400
Chemical Analysis %	SiO2
	Al2O3	≥38	≥39		≥40	≥42
	Fe2O3	≤2	≤1.7