20-150mm Steel Grinding Ball 20-130mm casting media low medium high chrome balls

Cast Iron Ball:

Type and chemical composition

Hardness distribution

Advantages of Jinan Zhongwei Forged Grinding Balls
1.Electric Furnace as compared to coal
2.Fair Market Price
3.Quality guarantee
4.On time delivery


The production process of the forged grinding balls

1). Raw material:
All the material is qualified with certificate and made in the Chinese largest steel production enterprise.

2). Different steel specifications ccording to the clients's requirements.
Main Steel Material :C45 Steel;60Mn Steel;B2 Steel

3). Steel Cutting:
the steel bars should be cut into small pieces according to the size of steel balls required by the order.

4). Heating:
we use the electric furnace instead of the traditional coal stove, the biggest advantage is that all the steel bars can accept the most approriate temperature during the heating progress. It affect the hardness and toughness directly.

5). Hammer forging:
The raw material is forged to a certain deformation by the air hammer, when the compression ratio increased, the micro-structure become more compact so that the hardness and the toughness can be improved.

6). Heat treatment:
Both the water quenching heat treatment production line and our own temperature control technics are important.
We have mature production technicians responsible for the heat treatment process as we know this process affect the grinding balls performance directly.

7). Quality Control.
Raw material test before production
Hardness test Drop Test Impact Test Core pulling Test after production
SGS test before delivery

Company Profile Brief Introduction

Established in 2000, We Jinan Zhongwei casting and forging grinding ball Co.,Ltd, are leading manufacturer and professional exporter of grinding media balls in China. with the annual output of 50,000 to 70,000 metric tons. Our products grinding media balls are mainly exported to more than 20 countries and regions in the world, such as Japan, Korea, South Africa, Zambia, Malaysia, Philippines, Indonesia, Mongolia, Australia, UAE, Chile etc.

Our company is located in Zhangqiu city, Shandong Province, which is provided with superior geographical position and convenient transportation. It is only 50 kilometers' distance to Jinan Airport and 260 kilometers' distance to Qingdao port. Our company covers an area of 15,000 square meters, with two million registered capital. And there are 150 existing staff, including 21 technicians.

Our main products are forging grinding steel balls, and (high,low,medium) chrome alloyed casting iron balls, casting cylpebs, grinding rods. Relying on the advanced equipment and production technology, our grinding balls have the advantages of high hardness, good wear resistance, no breakage and even wearing. They are mainly applied to various mines, cement plants, power stations and chemical industries.

To ensure the excellent performance of grinding balls, We've set up flawless quality detection systems, advanced quality control and test equipments. We have also obtained ISO 9001:2008 International Quality System Authentication.

Strength casting quality and credit forging magnificence. Insisting on the theory of "Quality first, Credit Goal, and Mutual Profits". We are trying best to supply customers both at home and abroad with high quality products and satisfactory service.

We sincerely welcome customers from both at home to our factory for on-site inspections!