Hello, I am Bill from Foison China.  If you have any steel ball related question, or would like to place an order, please feel free to send an Email or give us a call. We will be honored to be at your service.
Now, lets take a look at some of our products and see if they meet your need. 

Low carbon steel 
(AISI 1010 to 1015/Q195, Q235, C15A)
Grade of ball: 20 to 1000
Size: 0. 8mm to 50mm

High carbon steel 
(C80 C82B C85)
Grade of ball: 20 to 1000
Hardness:HRC 60-66
Size: 2.0mm to 25.4mm

Stainless steel ball
(AISI 316&316L/I 304&304L/201/665/440C&440/ 420&420C)
Grade of ball: 10 to 100
Hardness:HRC 48-52
Size: 2.381mm to 25.4mm

Chrome Steel Ball
(GCr15/AISI 52100/100Cr6/SUJ-2)
Grade of ball: 10 to 100
Hardness:HRC 60-66
Size: 0.8mm to 80mm

Foison is a international trading company with all independent trading rights,
Our main product is steel ball,And we have our own ball factory (Huatong Steel Co.,Ltd)
Huatong Steel Co.,Ltd was established in 1999. It's a professional ball processing company with strong technical force, fierce product development, and high production capacity. This division employs more than fifty technical and quality management professionals on site.  It produces G10-G2000 specification balls in carbon steel, stainless steel, and ball-bearing balls, ranging anywhere from 0.45mm all the way up to 50mm in a variety of specifications.

ISO 9001  IATF16949

Dry, Light Oil. Box, Plastic Bag, Steel Drum

We have a quality control room,And what we do here is we typically mainly look at size, crushing load specifications, surface clarity, hardness, and so forth to ensure that each individual ball coming off the line is up to standards.  Now, for some reason if you're not satisfied with anything we've given you, then  feel free to contact us and we will ensure your complete satisfaction in all the products from Foison.

Main application:
switches for appliances, shotgun cartridge bicycle parts, auto parts, guide, pulley, joint, toys tools and so on