... hours Size;50-1425mm 1The material of the iron plate(heavy duty seal)is a special chrome molybdenum cast iron, the content ... /cm2 (max.)Temperature range: -20-90 DegreeCircumferential speed: 3m/ sec (max).6The size of the iron plate(heavy duty seal) are various,the ... outer diameter is from 50-1425mm7Our iron plate(heavy duty seal)are used in construction machinery and mining machinery , ...