Grade Q355NH equivalent astm material plate atmospheric corrosion from BBN

When talking about our team, it is hard not to mention our QC department (Quality Control). We have built strict qualitycontrol system to guarantee the steel quality. During the steel materials production, we have strict monitoring measures and indicators, and ensure no chemical composition, mechnical properties and so on technical problems for the steel materials Q355NH equivalent astm material. After production, our QC department will conduct another inspection regarding to the steel quantity, dimension, mark and so on points before delivery.

Weather resistant steel, as a new generation of advanced steel materials, has atmospheric corrosion resistance 2 to 5 times that of ordinary carbon steel. The longer it is used, the more prominent the corrosion resistance. Because it has the characteristics of rust resistance, no coating, thinning and consumption reduction, labor saving and energy saving, weather resistant steel can be applied to steel structures used in buildings, vehicles, bridges, towers and other long-term exposure to the atmosphere, Q355NH equivalent astm material and can also be used to manufacture containers and railway Structural components such as vehicles, oil derricks, seaport buildings, and oil platforms.

Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized Q355NH equivalent astm material are higher than that of annealed Q355NH equivalent astm material, but the elimination of internal stress is not as good as annealing. The normalizing operation of Q355NH equivalent astm material is simple, the cost is low, the productivity is high, and it is widely used in actual production.

Our client purchase more than 900 tons pipe Q355NH equivalent astm material from India. And we do the inspection for each one pipe before shipment.During the inspection, the inspector saw that the surface of the square pipe kept the original color of the stainless steel, no fracture, no depression and other quality defects was found.