For Stainless Steel balls, we have two different processes, one is forged balls, the other is hollow balls.
The document could provide of Balls:
- ISO9001, CE, PED issued by TUV.
- 3.1 Mill Test Certificates
- 3.2 Mill Test Certificates (From 3rd Party, need an extra charge on the customer)
- Heat Treatment Process Certificates
- Heat Treatment Temperature Chart
- Dimension Testing Report
- NDE Testing Certificates by UT.