Magnesia Carbon Brick HS Code: 69021000 HS Code: 69021000Magnesia-carbon brick is pressed by high pressure hydraulic press made from ... dead burned magnesite or fused magnesite and carbon material ( ... furance,Arc furance,VOD,VAD etc Magnesia carbon bricks: MgO: 72--97%, C: 18-5%,B.D.: 2.9--3.1 Magnesia Carbon Brick