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19

Quarry products and building materials

Refractory, acidproof and thermal insulating stones

1167.16

Bauxite bricks

1167.21

Chrome oxide bricks

1167.32

Light firebricks

1167.48

Insulating stones

1167.51

Chimney blocks

1167.54

Corundum bricks

1167.59

Nozzle bricks

1167.73

Ladle bricks

1167.81

Acidproof bricks

1167.82

Silica bricks

1167.83

Silicon carbide bricks

1167.84

Sillimanite bricks

1167.85

Spinel bricks

1167.98

Bottom blocks for molten tin bathes

1167.99

Zirconium bricks