In the manufacture of tooling, it is generally marked with steel printing, and sometimes with the DK100 metal cutting plotter. However, it is a tricky task to mark on a small, thin, hard, or finished reference surface. Failure to do so can result in scrapping due to deformation caused by printing. We have also used copper sulphate to write instead of printing, but the tooling will be illegible after a period of use.
Stop Check Valve,Cast Steel Globe Stop Check Valve,Stainless Steel Stop Check Valve,Cast Globe Stop Check Valve
Jiangsu Hida Marine Valve Co., Ltd , https://www.haidavalve.com