... Size;50-1425mm 1The material of the iron plate(heavy duty seal)is a special chrome molybdenum cast iron, the ... ,the outer diameter is from 50-1425mm7Our iron plate(heavy duty seal)are used in construction machinery and mining machinery , ... Southest Asia,Thailand,India,Turkey,Indonesia and so onCertificates: ISO9001-2000 (certificate No.: 00907Q11184ROM).Tenet:Existed by Integrity and Developed by ...