... : -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 , like komatsu ... (2)taiwan(3)Europe,America,the UK,Australia(4)Southest Asia,Thailand,India,Turkey,Indonesia and so onCertificates: ISO9001-2000 ( ...