Dump Truck Body In open-pit mining operations, dump truck bodies are exposed to severe impact from large rocks and continuous sliding abrasion during loading and unloading. The floor, side walls, and welded joints are especially vulnerable to wear, deformation, and cracking. Chromium carbide overlay (CCO) wear plates or hardfacing can be applied to high-wear areas to create a high-hardness protective layer that resists abrasion and impact. Compared with conventional steel, these solutions can extend service life by two to five times, reduce downtime and maintenance costs, improve transportation efficiency, and lower the total life-cycle cost, making them ideal for iron ore, copper, gold, and coal mining applications.