• Model NO.：25mm
• Customized：Non-Customized
• Breakage Rate：1% Max
• Surface Hardness：HRC60-65
• Transport Package：Steel Drum , Container Bag
• Specification：ISO9001: 2008
• Trademark：ZW
• Origin：Zhangqiu, Shandong, China
• HS Code：73261100
• Production Capacity：50000 Tons

Name
Chemical elements
45#
C:0.42-0.50 Mn:0.50-0.80 Si:0.17-0.37 Cr:0.2 max P: 0.035max Ni:0.25max Cu:0.25max
60Mn
C:0.55-0.65 Mn:0.7-1.0 Si:0.17-0.37 Cr:0.25max S:0.035max P:0.035max Ni:0.3max Cu:0.25max
65Mn
C:0.62-0.70 Mn:0.7-1.0 Si:0.17-0.37 Cr:0.25max S:0.035max   P:0.035max Ni:0.3max Cu:0.25max
B2
C:0.72-0.92     Mn:0.7-1.2 Si:0.17-0.37 Cr:0.4-0.6 S:0.04max   P:0.04max
Our Services
 We supply forged steel grinding balls with diamater 20mm-150mm.
We supply casted iron grinding balls with diamater 20mm-150mm.
We supply grinding rods made by C45 Steel ,60Mn Steel,B2 Steel.
We supply grinding cylpeb (Cylinder) with High Chrome,Low Chrome,Medium Chrome
 
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
Certificate: ISO 9001:2008
Packaging & Shipping
Packing: Container bags or steel drums or others.
For Container Bag, Net weight 1000Kgs ,Gross Weight 1002KGS ,Measurement 0.4CBM
For Steel Drums ,Net weight 850-950Kgs ,Gross Weight 865-965KGS ,Measurement 0.3CBM .
Shipping and delivery 
Port of loading:Qingdao Port,China
Delivery time : Normally 2-3 weeks after down payment received.
Partial shippment allowed,
 
FAQ
Payment terms : T/T (30% DP,balance against copy of B/L.;  L/C 
Samples :  Free samples are provided for test before trial order 
MOQ : 1 Ton
For more information about our products ,Pls feel free to contact us