what is b480gnqr corten steel data sheet Q/BQB 340 B480GNQR weathering steel plates perfect for ...
Q/BQB 340 B480GNQR weathering steel plates chemical contents include copper, nickel, phosphorus and other chemical elements, which is for only a few percent and make Q/BQB 340 B480GNQR weathering steel plates have better mechanical properties, as well as greater corrosion resistance.