EQUIPMENT OF THE MPM MANDREL BAR? Our equipment including 30t basic electric arc furnace,12t electroslag remelting furnace,SXP-651400 rotary forging machine,20m cover-type resistance annealing furnace,20m cover-type resistance quenching and tempering furnace and heavy machine equipment. specification and capability? diameter?100-300mm?length??19.5m.We can product 100 MT mandrel per year. standard? We provide the mandrel bar according to INNSE 206 specification or the uses enterprise specification