AISI 52100, EN31, JIS G4805 SUJ2, Wks 1.3505.
The combination of chromium and nickel is used to form an antioxidant layer on the surface of the material to prevent rust and oxidation
Concentricity tolerance to 0.002mm
Wear resistant and corrosion resistant
No rust in humid environment, strong anti-oxygen capability, high quality components precision coordination
Strict quality approval, round precision steel ball
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Henan scole industy and trade Co.,Ltd is the most professional company in different material balls,there are two factories producing matal balls ,glass balls,ceramic balls,plastic balls ,one is in Taian City,Shandong province,anothere is in Kaifeng City Henan province.
With over 20 years history ,our factory have good reputation from our customers and government,so our factory passed ISO9001:2008 and our product got SGS,RHOS CERTIFICATES.
1.Pccking : Plastic Bag + Cardboard Box + Wooden
2. As your request.
3.Port:Qingdao Shanghai Zhejiang
4.Lead Time :Shipped 7days after payment