GB/T 18931

GB/T 18931 (Classification of basic dense shaped refractory products containing less than 7% residual carbon)· GB (China) · 36 materials

Designation	Material group
Cr 30	Chromia based	chevron_right
D 40	Calcia based	chevron_right
F 40	Mixed Ceramics	chevron_right
F 50	Mixed Ceramics	chevron_right
L 70	Calcia based	chevron_right
M 80	Single oxides	chevron_right
M 85	Single oxides	chevron_right
M 90	Single oxides	chevron_right
M 95	Single oxides	chevron_right
M 98	Single oxides	chevron_right
MA 20	Alumina based	chevron_right
MA 30	Alumina based	chevron_right
MA 40	Alumina based	chevron_right
MA 50	Alumina based	chevron_right
MA 60	Alumina based	chevron_right
MA 70	Alumina based	chevron_right
MA 80	Alumina based	chevron_right
MCr 30	Magnesia based	chevron_right
MCr 40	Magnesia based	chevron_right
MCr 50	Magnesia based	chevron_right
MCr 60	Magnesia based	chevron_right
MCr 70	Magnesia based	chevron_right
MCr 80	Magnesia based	chevron_right
MD 40	Magnesia based	chevron_right
MD 50	Magnesia based	chevron_right
MD 60	Magnesia based	chevron_right
MD 70	Magnesia based	chevron_right
MD 80	Magnesia based	chevron_right
ML 40	Magnesia based	chevron_right
ML 50	Magnesia based	chevron_right
ML 60	Magnesia based	chevron_right
ML 70	Magnesia based	chevron_right
ML 80	Magnesia based	chevron_right
MZ 70	Zirconia based	chevron_right
MZ 90	Zirconia based	chevron_right
MZS 70	Magnesia based	chevron_right