Import Chrome Casting Steel Ball — Buy in Bulk from Supplier in China

Chrome casting steel balls are produced through a high-temperature casting process using high-chromium alloyed iron, resulting in a hardened surface with a martensitic microstructure. These balls are available in diameters ranging from 15 mm to 150 mm, with a typical hardness range of 58 to 65 HRC. The surface is free of cracks or porosity, and the internal structure is dense, ensuring consistent performance in grinding applications.

The chromium content typically ranges from 10% to 25%, depending on the grade, which enhances wear resistance and reduces fragmentation during impact. These balls conform to standard classifications such as ASTM A532 Class IIIA and GB/T 14646. Typical tolerance for diameter is ±0.5% of nominal size, and surface roughness is kept under 3.2 micrometers Ra. The balls are heat-treated in controlled atmospheres to prevent decarburization and ensure uniform hardness throughout the cross-section.

These steel balls are primarily used in ball mills for cement, mining, and thermal power plants, where high abrasion resistance is critical. Buyers include mineral processing facilities and equipment manufacturers sourcing in bulk quantities of 5 to 50 metric tons per order. Packaging is typically in 1-ton woven polypropylene bags or steel drums, stacked on wooden pallets. Trade terms are usually FOB Qingdao or CIF destination, with lead times of 20 to 35 days after order confirmation.

Shandong Huamin Steel Ball Joint-stock Co., Ltd is located in Yangjun Village, Guanzhuang Town, Zhangqiu, Jinan, Shandong Province, China. The supplier is classified as an imported-tier manufacturer, indicating prior export experience. The listing confirms no response rate or verification status, suggesting limited digital engagement but possible operational capacity as a producer of steel grinding media.

There is no mention of certifications, workforce size, or annual production volume in the source data. The supplier's address is specific and matches known industrial zones for steel casting in Shandong. Buyers should treat this as a direct manufacturer without third-party audit data and request batch test reports for hardness, composition, and impact resistance before large orders.