欧美日韩黄片免费看|日韩美女视频在线观看一二三区|av毛片av天天av天天爽|黄片在线免费观看不卡秒播|亚洲美女影院亚洲五月丁香色|91黄色成人一级视频免费|久久香蕉亚洲欧色依依在线|九草成人视频在线观|欧美国产小说日韩|99精品一区二区三区

CN
Position: Home >> Application >> Sandblasting
The steel structure

2222-03bbe

The steel structure
To the steel structure, the speed of corrosion is mainly relate to the air relative humidity and the
composition and quantity of pollutant in the atmosphere.
In order to reduce metal corrosion and extend its service life, we must adopt the spreads brushes
and spray finishing methods after operate the surface treatment, to form the protective film in the
metal surface, and cause the metal and the corrosive medium isolates, thus prevents the metal the
corrosion.

 

點擊這里給我發(fā)消息