Alloy sheet: Material:Q345B,12Cr1MoV,15CrMoR,16MnR etc. Standard: ASTM, JIS, ... . Emial marilynkftj at 126 dot co m Cold rolled steel plate/sheet: 1. Material: Q345ABCDE, 16Mn, 12Cr1MoV, 15CrMo, Cr5Mo etc.2 ... -138-2167-8301E mial marilynkftj at 126 dot co m Alloy plate