Specifications

Brand	Material	C	Mn	Si	Cr	P/S	Ni
DT-1	50Mn	0.48-0.56	0.65-1.0	0.17-0.37	0.15max	0.035max	0.05max
DT-2	60Mn	0.57-0.65	0.70-1.1	0.17-0.37	0.25max	0.035max	0.05max
DT-3	65Mn	0.62-0.75	0.90-1.2	0.17-0.37	0.25max	0.035max	0.10max
DT-4	75MnCr(B2)	0.72-0.85	0.70-0.90	0.17-0.35	0.40-0.60	0.035max	0.15max
DT-5	B3	0.50-0.65	0.4-1.0	1.40-1.80	0.77-1.10	0.035max	0.15max
DT-6	45#	0.42-0.48	0.50-0.80	0.17-0.37	0.15max	0.035max	0.05max

Nominal Diameter (mm)	Diameteical Tolerance (mm)	Weight of Single of forging ball in average	Number of piece of One ton forging ball in average	Surface Hardness	Impact Toughness
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50	+2 -1	32 64 110 263 513	31250 15625 9090 3802 1949	55-65	≥12
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100	+3 -2	888 1410 2104 2996 4110	1126 709 475 333 243
DIA 110 DIA 120 DIA 130	+4 -2	5457 7102 9030	182 140 110
DIA 140 DIA 150	+4 -3	11278 13871	88 72

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
 
Packing
1.Bags:1000KG polypropylene bags which are highly resistant to UV rays and secure bag straps to reduce time  and effort in loading and unloading.
2.Drums:Recyeled drums can also be supplied. the drums have a removable lid and compression ring for secure storage.Drums are more efficient for some modes of transportation and can also be delivered on wooden pallets.
 
Shipping:
1.Port of Loading: Qingdao Port,China
2.Partial shippment allowed
3.by DHL/TNT express for samples order.Door to door to delivery;
4.Appointed freight forwarder by customers is acceptable

Question: 

Q1. What is the advantage of your company?

A. We are a Professional steel ball manufacturers, which have 10 years of production experience.

B. Original manufacturer, real existed factory.
C. Hi-Tech and capable production line.

D. High quality, reasonable price, timely full service.

Q2. in which countries are your products sold?

Our products are exported to over 30 countries and regions including USA, Republic of Korea, Japan, Malaysia, Australia, Canada and South Africa, etc., well and universally received by clients.

in order to better serve customers, we have set up the office in Malaysia, Chile, United States and Spain.

Q3. how to ensure the quality of your product?

B. Every batch of steel ball must be detect the size, weight, hardness, chemical composition. and we will test other items according to the customers requirements.
C. If the test is unqualified, we will not shipment.

Q4. Sample order is acceptable or not?

Sample order is acceptable.You are warmly welcomed to vist our factory.the order can be placed

after your investigation.