alloy steel plate 1).Thickness:150mm-650mm 2).Length:3000mm-18800mm ... A709Gr50 A633D S275JO S355JO 12Cr1MoV 15CrMo low alloy steel plate Q345,Q390,Q420,Q460GB/T1591Makes mechanical device and other ... structural elements like drilling machine, power shovel, electricity drive wheel counter- mine trolley, mineral product automobile, excavator, ... S275JO S355JO 12Cr1MoV 15CrMo low alloy steel plate