1) Strengthen the management of air dryers to ensure that there is no water in the compressed air.
2) Strengthen the management of rolling oil, and control its water content below 400X10¯6.
3) The packaging of coated aluminum coils should be sealed, and an appropriate amount of desiccant should be placed in each coil.
4) The humidity of the wooden shaft and box board of the packaging box should not exceed 18%, and the temperature of the packaged aluminum coil should not exceed 45℃.
5) Do not open the sealed package immediately when transporting from a low-temperature area to a high-temperature and high-humidity area.
6) Coated aluminum coils should not be placed in places where there is rain or snow on the roof of the workshop or warehouse.
