. Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2) is ______________ °C? / Refractory Technology / By admin . Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2) is ______________ °C? A. 500 B. 1000C. >1350 D. >2000
