... varies types 4)customized as request We mainly produce:heavy iron caster wheel, heavy full iron caster wheel, pulley rail wheel, ... aggravating bearing 1-3 tons of heavy iron wheel, alien iron wheel manufacture. 1.Heavy-duty casters wheel frame selects 12-20 ... to conditions of use choose spraying plastics or galvanized. 2.Heavy-duty casters wheel choose pressure bearing, roller bearing and ball ...