Supply Of Cold Rolled Non-grain Oriented Sheet Steel Gr:270. Arnish Coating Average Thickness Requirement: As Per Cl 3.3(a) Of Aa10915; Or 4(+2)(-1) Microns. Spec: Aa10915 Rev: 08 Size: 0.5x730(roll) Insulated Dim.: Lxw Grade: St-gr.270-cr"