The stainless steel bowl has black circle water stains after steam disinfection.

Water quality problems, stainless steel bowl quality problems and other reasons.

1, the water contains too many impurities and heavy metals, which will produce deposits such as scale and rust in high temperature and high pressure environment, resulting in black circle water stains on stainless steel bowls.

2. There is something wrong with the quality of the stainless steel bowl itself, which will affect the surface smoothness and antirust performance of the bowl and easily form black water stains.