Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness); German version EN 993-12:1997— 7 стр.
Methods of test for dense shaped refractory products - Part 13: Specification for pyrometric reference cones for laboratory use; German version EN 993-13:1995— 5 стр.
Methods of test for dense shaped refractory products - Part 13: Specification for pyrometric reference cones for laboratory use; German version EN 993-13:1995— 5 стр.
Methods of test for dense shaped refractory products - Part 12: Determination of pyrometric cone equivalent (refractoriness); German version EN 993-12:1997— 7 стр.