Refractory ceramic constructional goods containing >50% of MgO, CaO or Cr2O3 incl. bricks, blocks and tiles excl. goods of siliceous fossil meals or earths, tubing and piping
Ognjevzdržni bloki, opeke, strešniki ipd., z utežnim deležem MgO, CaO, Cr2O3 > 50%