The important role of weathering steel SMA490AP in life

Boiler steel plates we supply: 20R, Q235R, Q245R, Q345R, 16MNR, 16MnDR, 15CRMOR, 12CR1MOVR, 15MnNiDR, 09MnNiDR, P235GH, P265GH, P295GH, P355GH, 16Mo3
Cylinder steel: SG255, SG295, SG325, keyword}, SG365, HP235, HP265, HP295, HP325, B440HP, B490HP

The chromium plays an important role in weathering steel SMA490AP, Chromium Molybdenum steel. The chromium can form a dense oxide film with strong adhesion on the surface of the steel plate, so as to prevent the internal metal from further oxidation or corrosion. The higher the chromium content in the steel plate, the denser the oxide film, and the better the oxidation resistance and corrosion resistance of the steel plate.

Try to use weathering steel SMA490AP high-quality alkaline covered electrode as much as possible, and don't use inferior electrode to save money. According to the theory of chromium poor, chromium carbide will be precipitated on the upper edge of the grain boundary of the weld and heat affected zone when the weathering steel SMA490AP temperature range is between 450 ℃ and 850 ℃, resulting in chromium poor grain boundary, which is insufficient to resist corrosion.

The 365 day service system is implemented, and the business, loading and delivery are handled as usual in holidays and festivals. Actively help users solve difficulties. When users encounter difficulties in handling business, they should actively coordinate with the external solution; if they need to solve the problems internally, they should solve them in a timely manner without prevarication and wrangling. In line with the weathering steel SMA490AP principle of "fairness, justice and timeliness", coordinate with relevant departments and deal with all kinds of objections in a timely manner.