... corrosion Firecaly bricks (SK34)SK34 fireclay brick is produced accordance with international standard. SK34 fireclay brick has been exported to South korea, Japan ... include fireclay, magnesia, high alumina, silica ,all kinds of unshaped refractory products ,etc, if you have any product need my help ... +0.1~ -0.50.2Mpa refractoriness under load, °C≥1350 Refractory brick (Sk34)