How is the zinc coating thickness controlled during SGCC coil production?

How is the zinc coating thickness controlled during SGCC coil production?
Answer: The zinc coating thickness is controlled by controlling parameters such as the hot-dip galvanizing time, the zinc bath temperature, and the zinc dispensing rate of the steel sheet.
What are common surface defects of SGCC coils?
Answer: Common surface defects include uneven zinc spangles, zinc layer shedding, surface scratches, missing plating, and white rust.
How is the quality of SGCC coils tested?
Answer: The quality of SGCC coils can be tested by measuring zinc coating thickness, chemical composition, mechanical properties (such as yield strength, tensile strength, and elongation), and surface quality.
What is the typical service life of SGCC coils?
Answer: Under normal operating conditions, SGCC coils have a service life of 30-50 years, but this service life may be shortened in harsh corrosive environments.
Is SGCC coils environmentally friendly?
Answer: SGCC coils are inherently environmentally friendly. Pollutants generated during their production process are treated and discharged in a manner that meets emission standards. Furthermore, the long service life of SGCC coils reduces material replacement and waste generation.