A588 Grade A steel is widely used in a variety of weather-resistant building structural parts (especially for industrial atmospheric environment), bridge auxiliary structural parts, etc.

SUS304L stainless steel belongs to austenitic steel, which is the most widely used,(Single-phase austenite).No heat treatment hardening phenomenon (non-magnetic, the use of temperature -196-800C).

St 52-3 carbon and low alloy steel is a mainly kind of Carbon and low alloy steel, it is suitable for arc welding and gas welding.

GB/T4171 Q355NH Weathering steel is characterized by a protective rust layer resistant to atmospheric corrosion. Compared with carbon steel, weathering steel in the atmosphere has a more excellent corrosion resistance.