A M industries are also major stockist and supplier of high quality ROCKSTAR 400 Plates, designed to handle a high-performance task in mining, construction, earthmoving and material handling industries. ROCKSTAR 400 plates are manufactured to the universal standard ASTM A514 Grade B and are marked with UNS K12039 designation, these plates are highly wear-resistant and strong as well a... https://www.am-industries.com/rockstar-400-plates-manufacturer-exporter-suppliers.html