Causes and solutions of over-pickling and under-pickling of steel pipes
There are spots or even pits on the surface of the steel pipes that have been pickled. The common over pickling in production is generally that the acid concentration is too low, the temperature is too high, the time is too long, and the concentration is too long. In order to clean the part, the rest is pickled. The defects of over-pickling are often difficult to save and should be avoided as much as possible.
Under-pickling generally the acid concentration, temperature is too low, the time is too short, but not clean, can be re-pickling or mechanical grinding and sandblasting treatment.
Develop a scientific and reasonable pickling process
Contact Person: Joanna