mine car wheel 1.material:cast iron or cast steel 2.diameter :200-900mm 3.quality:high 4.performance :good ... , and the material of the 350 steel and cast iron two kinds, shaft thick have 50 mm, 55 ... 200, 240, 300, and 350 are all in stock, gauge 762, 900, 1435 to need to make ... /3509001150790ZBL600/400≤900060040087047695ZBL762/4007621032638ZBL900/4009001170776 cast iron railway mine car wheel