Heavy-duty metal casters from Xiamen Yirong Hardware Co., Ltd. are built for extreme strength, featuring steel or cast iron wheels and brackets to handle the toughest industrial demands. These casters support 1,000-10,000kg, withstanding the weight of heavy machinery, construction materials, or bulk industrial goods. Wheels are crafted from hardened steel (55-60 HRC) or cast iron, offering unmatched resistance to impact, abrasion, and high temperatures (up to 300°C), making them ideal for foundries, steel mills, or construction sites. Brackets are made from thick steel (5-10mm), welded or bolted for structural rigidity, with corrosion-resistant coatings (zinc plating, heat treatment) to withstand harsh environments. Treads may be plain metal (for maximum strength) or coated in rubber/polyurethane for grip and floor protection. Swivel or fixed designs cater to movement needs, with sealed bearings ensuring smooth rotation in dusty or wet conditions. These casters deliver uncompromising strength for the heaviest loads.