Scale Remover & Chemical Polisher


Carbon Steel Chemical Polishing Agent

ST-201 is a high functional chemical polishing agent to enhance the surface roughness and glossiness of carbon steel and its alloy. The application method of ST-201 is as below.


• Improves surface roughness and provides high glossiness
• Improves adhesion of plating
• Concentration of solution is controllable depends on steel grade
• Solution can be used for long time
• ST-201 can be handled in room temperature (10~25℃)
• Short time of application

[ Properties and method ]

Appearance Lemon yellow transparent liquid Concentration
Odor None Temp. Room temp.
pH(1%) Method 1. Fill up a tank with water up to 80~90%.
2. Proceed with ST-201 (10~15%) & PEROXENE (3~5%) added.
S/G (g/ml) 1.038 ± 0.02 Packing 20L (pail) / 200L (drum)

※ Average polishing condition by steel grade

Steel grade Treatment concentration (%) Time
Surface roughness
S–10C, 45C 10 5 3~5 0.7 High glossiness
SCM steel 15 5 5~10 1.3
Boron alloy steel 15 5 5~10 1.3
Other special steel 10 3 5~10 0.8

* Time of application : Check and choose most suitable time of application for best glossiness on the surface.
* Plating process shall be proceeded after surface adjustment to get rid of smut on the surface.