NINGGUO HAI TIAN LI INDUSTRY DEVELOPMENT CO. LTD.HANGZHOU OFFICE - China

Our main products as follows: 1. The new type of high efficiency forging steel ball. This kind steel ball is one of our major products, It's major character is that: high hardness, no breakage, no wearing, lower price. It is used in cement plants, mines, power stations etc. Hardness: surface HRC 55-60 Core HRC 50-55 Breakage rate 1%. 2. The high chrome cast grinding ball. Hardness: surface HRC 58-65 Core HRC 55-60 Breakage rate 1%. 3. RCAB new material steel ball (chromium and rare-earth alloy steel grinding balls). It was only produced in China. It was applied for a lot of fields: cement plants, mines, power stations, chemical industry, etc. The high hardness of the steel ball. The hardness from surface to core is uniformity. The hardness of surface can reach 60-65, the core can reach   

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HRC58, the different of the hardness from surface to core only is HRC2-3, there is no other kind grind ball can reach this level. This new ball was used by China, Japan, Korea, South Africa, etc countries. Tthe malroundness is 1%. These is no other kind steel ball can't reach the level. RCAB new material steel ball is the best steel ball that c' instead of the high chrome cast steel grinding ball and other material ball.