... ), door wheel Light cast iron caster wheel 3-5 inches. Industrial heavy thickening 4-8 inch iron caster wheel, 6-12 inches ... thick 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 bearings3 ...