Right now the customer has problem about material (SCM 440) or Hi-Carbon Steel can't remove smut, but if want to remove 100% they need to bring parts to polish it again after immersion by HCL acid.
Right now the customer has problem about material (SCM 440) or Hi-Carbon Steel can't remove smut, but if want to remove 100% they need to bring parts to polish it again after immersion by HCL acid.