Agent A : CONC. HCL = 1 : 1
Agent B : CONC. HNO3 = 1 : 1
Can be applied by dipping A (liquid) for about 10~15 minutes. It is visible to see the chemical reaction of getting rid of the black scale. (after heat treatment & before finishing etc)
After that, the users can figure out whether to proceed with B (liquid) or not. It depends on the requirements of customers. If the users need to dip in B (liquid), the process takes about 1~5 minutes to recover. To finish, clean by water with high pressure and then dry it.
GYC Group Technical Service Team is your strong backup whenever you require special handling, process consulting and the production cooperation of R&D. Please do not hesitate to contact our Overseas Department. Thank you!