Products/Services We Offer: |
A stainless steel ball: The United States brands AISI440, China Grade 9 crl8, point to the hardness of 55-57. (งถ1.0-งถ50.8)
Second, stainless steel ball: The United States brands AISI420, China Grade 3 crl3, point to the hardness of 50-52. (งถ1.0-งถ50.8)
3, stainless steel ball: The United States brands AISI316, China Grade 0 crl9Nil2M02 no hardness. (งถ0.8-งถ50.8)
4, stainless steel ball: The United States brands AISI304, China Grade 0 crl9Ni9 no hardness. (งถ1.0-งถ50.8)
5, ball bearings: Material |