... 4.Material:SS201, SS301, SS304, SS304L. SS316, ECT Hollow Section is one grade that manufactured follows ASTM. It is equal ... ≤0.030Cr 11.5-13.5Material Notes: Martensitic (high-strength chrome steel), enjoys good wear resistance and corrosion ... TimeAccording to the quantityCertificateISO9000/9001/9004/19011: 2000, Products quality certificate etc, Applicationfor house, building, shopping mall, inside ...