• Model NO.：50MM
• Customized：Non-Customized
• Breakage Rate：1% Max
• Surface Hardness：More Than HRC 60
• Transport Package：Steel Drum , Container Bag
• Specification：ISO9001: 2008
• Trademark：ZW
• Origin：Zhangqiu, Shandong, China
• HS Code：73261100
• Production Capacity：50000 Tons

Basic Info.

Model NO. 50MM Customized Non-Customized Breakage Rate 1% Max Surface Hardness More Than HRC 60 Transport Package Steel Drum / Container Bag Specification ISO9001: 2008 Trademark ZW Origin Zhangqiu, Shandong, China HS Code 73261100 Production Capacity 50000 Tons

Product Description

Jinan Zhongwei Grinding Steel ball have obtained ISO 9001 Certification.

Advantages:
1. high hardness
2.good wear resistance
3.impact strength:12-35J/CM2
4.Breakage Rate:0.5-1%

5.Standard: YB/T091-2005
6.Certification:SGS,ISO9001:2008, ISO14001:2004, GB/T28001-2001(OHSAS18000)

Products List
1> Forged Grinding Steel Ball
Material
C
Mn
Si
Cr
S
P
50Mn
0.48-0.56
0.70-1.0
0.17-0.37
≤0.25
≤0.035
≤0.035
60Mn
0.57-0.65
0.70-1.0
0.17-0.37
≤0.25
≤0.035
≤0.035
65Mn
0.60-0.70
0.90-1.2
0.17-0.37
≤0.25
≤0.035
≤0.035
B2
0.70-0.85
0.70-0.80
0.17-0.37
0.2-0.7
≤0.03
≤0.03
75SiMn
0.70-0.90
0.70-1.20
0.4-0.8
≤0.25
≤0.03
≤0.03
Wear-resistant Alloy
0.50-0.65
0.4-1.0
1.4-1.8
0.9-1.2
≤0.03
≤0.03

2> Cast Grinding Steel Ball

Material

C

Si

Cr

Mn

S

P
Cr-22-32%
2.0-2.8
≤1.0
22-32
0.5-2.0
≤0.06
≤0.08
Cr-17-22%
2.0-2.8
≤1.0
17-22
0.5-2.0
≤0.06
≤0.08
Cr-15-17%
2.2-3.0
≤1.0
15-17
0.5-2.0
≤0.06
≤0.08
Cr-11-14%
2.2-3.2
≤1.0
11-14
0.5-2.5
≤0.06
≤0.08
Cr-5-10%
2.1-3.2
≤1.2
5-10
0.5-1.5
≤0.06
≤0.08
Cr-1.5-3.%
2.2-3.5
≤1.2
1.5-3.0
0.5-1.5
≤0.06
≤0.08

  Size and Weight

Norminal Diameter
Diametrical Tolerance(mm)
Approx Weight of Single Ball(kg)
Average Number of One MT
20mm/0.75''
+1,-0.5
0.033
30303
25mm/1''
+1,-0.5
0.064
15625
30mm/1.25''
+2,-1
0.11
9090
40mm/1.5''
+2,-1
0.261
3831
50mm/2''
+2,-1
0.51
1961
60mm/2.5''
+2,-1
0.883
1132
70mm/2.75''
+3,-1.5
1.402
713
80mm/3.25''
+3,-1.5
2.092
478
90mm/3.5
+3,-1.5
2.98
335
100mm/4''
+3,-1.5
4.087
244
110mm/4.5''
+3,-1.5
5.44
183
120mm/4.75''
+3,-1.5
7.062
141
Packaging
Ton bags (1000Kg Per Bag)
Iron drums (850~920Kg Per Drum
SGS test report will be provided according to clients's requirement.

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