Shandong Sinsun Machinery Manufacturing Co.,Limited is a professional manufacturer and exporter of grinding media balls/bars/cylpepes in China. There are over 300 employees, including nearly 50 technicians. We have advanced automatic production lines of forged steel grinding media balls and casting Chrome grinding media balls, full-automatic heat treatment lines, and standardized laboratory with completed testing equipments. The annual output is 120,000 metric tons.
 
Our main products are Forged Steel Grinding Ball with size of Dia.15mm-150mm, High, Medium and Low Chrome Casting Steel Grinding Ball with size of Dia.8mm-130mm, as well as Grinding Rods/Bars/Cylpeps and Casting Cylpebs. The specialties of our grinding media balls are high hardness/impact toughness value, good wear resistance, no breakage and low wearing-rate. They are widely used in the mines, cement plants, power stations and chemical industries, etc. All the products are sold to more than 60 provinces inChina and exported to to Asia, Africa, South America and other countries and regions.
 
Our company has passed ISO9001 quality management system certification, ISO14001 environmental management system certification and OHSAS18001 occupational health and safety management system certification. We are doing our best to provide our customers with high quality products, competitive price and satisfactory service. And we would like to create a prosperous future together with the friends all over the world.

Forged Grinding Steel Balls:
Materials (%):
50Mn:
C: 0.48-0.56; Mn: 0.70-1.0; Si: 0.17-0.37; Cr: 0.25Max.; S: 0.035Max.; P: 0.035Max.
60Mn
C: 0.57-0.65; Mn: 0.70-1.0; Si: 0.17-0.37; Cr: 0.25Max.; S: 0.035Max.; P: 0.035Max.
65Mn
C: 0.60-0.70; Mn: 0.90-1.2; Si: 0.17-0.37; Cr: 0.25Max.; S: 0.035Max.; P: 0.035Max.
70MnCr(B2)
C: 0.70-0.85; Mn: 0.70-0.80; Si: 0.17-0.37; Cr: 0.2-0.7; S: 0.035Max.; P: 0.035Max.
75SiMn
C: 0.70-0.90; Mn: 0.70-1.20; Si: 0.4-0.8; Cr: 0.25Max.; P: 0.035Max.; S: 0.035Max.
Wear-resistant Alloy
C: 0.50-0.65; Mn: 0.4-1.0; Si: 1.4-1.8; Cr: 0.9-1.2; P: 0.035Max.; S: 0.035Max.

Cast Chrome Grinding Steel Balls:
Materials (%):
Super-Chrome(ZQCr28)
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.0 Max.; Cr: 21-32; Mo & Cu: 1.0 Max.; S&P: 0.08Max.
High-Chrome(ZQCr20)                                    
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.0 Max.; Cr: 18-20; Mo & Cu: 1.0 Max.; S&P: 0.08Max.
High-Chrome(ZQCr17)                                    
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.0 Max.; Cr: 16-17; Mo & Cu: 1.0 Max.; S&P: 0.08Max.
High-Chrome(ZQCr15)                                    
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.0 Max.; Cr: 15-16; Mo & Cu: 1.0 Max.; S&P: 0.08Max.
High-Chrome(ZQCr13)                                    
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.2 Max.; Cr: 11-14; Mo & Cu: 1.0 Max.; S&P: 0.08Max.
High-Chrome(ZQCr10)                                    
C: 2.00-2.80; Mn: 0.50-2.0; Si: 1.2 Max.; Cr: 9-10; Mo & Cu: 1.0 Max.; S&P: 0.10Max.
Medium-Chrome(ZQCr8)                                
C: 1.8-3.10; Mn: 0.30-2.0; Si: 1.3 Max.; Cr: 6-8; Mo & Cu: 1.0 Max.; S&P: 0.10Max.
Low-Chrome(ZQCr5)
C: 1.8-3.20; Mn: 0.20-2.0; Si: 1.5Max.; Cr: 3-5; Mo & Cu: 1.0 Max.; S&P: 0.10Max.
Shandong Sinsun Machinery on Grinding Steel ball have the advantages:
1. high hardness: 58~66 HRC
2.good wear resistance: 20~40grams
3.impact strength:8-35J/CM2
4.Breakage Rate:0.5-1%
5.Standard: YB/T091-2005
6.Certification:SGS,ISO9001:2008, ISO14001:2004, GB/T28001-2001(OHSAS18000)
Packaging
Ton bags (1000Kg Per Bag)
Iron drums (850~950Kg 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 or L/C received.
Partial shippment allowed
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