Concentrating on wear-resistant grinding material for 30 years, Shandong Huamin Steel Ball Joint-Stock Co., Ltd is one of the largest grinding rod manufacture in China. We manufacture the product with the length of 2m to 7m and the diameter of 40mm to 140mm. The data is just for reference. The product can also be customized. After years of research and development, we finally develop the new-type steel grinding rod successfully. The newly developed product is characterized by low wear, unique chemical composition, high hardness of 45HRC to 55HRC, and strong toughness. Meanwhile, via the quenching and high temperature tempering treatment, the internal stress is removed. The product has good straightness, and won't break, bend and come out with two tapering ends. The economic benefit is much in evidence. a. The blanking of the steel grindng bar is implemented via the sawing machine. The dimensional tolerance would adide by the requirements of the order. After the implementation of blanking, the two ends of the raw material are polished into the R arc via the polishing machine. b. The surface of the product for the rod mill cannot have the crack, overburning and fissure visible to the naked eyes. c. The nonstraightness of the product is less than 0.2%. The diameter tolerance ranges from +0mm to -1.5mm. The length tolerance is fro +0mm-25mm. The fracture should be less than 3%.
Shandong Huamin Steel Ball Joint-stock Co., Ltd. was founded on May 26, 1986, which has been 30 years. It belongs to private joint-stock enterprise in Zhangqiu City, Shandong Province. Now there are 296 employees, including 71 R&D engineering technicians. At present, Huamin covers an area about 161,333 square meters, with building area of 70,000 square meters. The main products include Grinding Forged Ball, Grinding Bar, Casting Iron Ball, Grinding Cylpebs, Carbon Steel Ball and so on. At the same time, Patented Automatic Grinding Ball Production Line and Automatic Grinding Bar Production Line are researched and developed by ourselves, which has reached advanced level in the world. Now there are two production areas, with 15 production lines of different products, and the annual production capacity can be 150,000 tons. Our company has the self-management import and export rights, and the total assets are more than RMB 300 Million Yuan. 60% products are mainly exported to the famous mining companies in Chile, South Africa, Ghana and more than 30 countries and regions.