clay bricksITEM NL13 SK-30N3 SK32 SK-34N1 NZ42 Refractoriness(SK) ≥32 ≥1710 ≥31 ≥1690 ≥32 ≥1710 ≥34 ≥1750 ≥34 ≥1750 Bulk Density g
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