As we all know, a procedure is generally carried out after the production of stainless steel pipes, that is, "pickling". The pickling process of stainless steel pipes can remove surface contamination and stains for stainless steel pipes. The surface of the stainless steel tube is acid white after production is completed.

The preparatory work to be done before pickling the surface of the stainless steel pipe includes pickling and passivation. The welding coating, spatter, burr and dirt on the pipe fitting surface must be cleaned up. The surface of the stainless steel pipe should be wiped clean with gasoline or other organic solvents. If it is a large area of dirt, it can be cleaned with steam or 3~5% caustic soda (NaOH) solution, then rinsed with clean water and dried. Note that the CL-concentration of the clean water used should not exceed 25mg/L.

If you want to clean the stainless steel pipe with chemicals without destroying the performance of the stainless steel pipe, you can use the passivation process to form a dense oxide film or oxygen adsorption layer on the surface of the stainless steel pipe to prevent chemicals and stainless steel pipes. The metal matrix develops the telephone retest response, which can improve the corrosion resistance of the stainless steel pipe surface.

What to do when there is a little rust on the surface of the stainless steel pipe or other dirty things that are difficult to wash off? You can consider using an acid process to clean the slight rust on the surface of the stainless steel thick-walled pipe without damaging the oxide film on the surface of the stainless steel pipe Or other substrates of the stainless steel pipe, the dirt on the surface of the stainless steel pipe will also disappear, so that the surface of the stainless steel pipe can be purified.

Wuxi Hongwang Stainless Steel Co., Ltd. has been focusing on stainless steel products such as stainless steel plates, stainless steel tubes and stainless steel profiles for many years. We are a supplier of stainless steel raw materials, if you are interested in our stainless steel pipes, please contact us.

Tag: pickling process of stainless steel pipes