Composite sheet and steel wire

A composite sheet provided with a rubber sheet and a plurality of steel wires embedded in the rubber sheet, the plurality of steel wires being arranged side by side in a row in the width direction of the rubber sheet, the cross-section of each steel wire orthogonal to the longitudinal direction being a flat cross-section, the ratio L2/L1 of the length L1 in the long axis direction of the flat cross-section to the length L2 in the short axis direction of the flat cross-section being 0.230-0.620, the area of the flat cross-section is 0.045 mm2 or more and 0.140 mm2 or less, the interval between two adjacent steel wires in the side-by-side direction is 0.100 mm or more and 0.700 mm or less, and each steel wire is arranged such that the long axis direction is along the width direction of the rubber sheet. 一种复合片，具备橡胶片和埋入于所述橡胶片的多个钢丝，所述多个钢丝在所述橡胶片的宽度方向上并排成一列，各钢丝的与长度方向正交的截面为扁平截面，所述扁平截面的长轴方向的长度L1与短轴方向的长度L2之比L2/L1为0.230以上且0.620以下，所述扁平截面的面积为0.045mm2以上且0.140mm2以下，在并排方向上相邻的两个钢丝的间隔为0.100mm以上且0.700mm以下，各钢丝被配置为所述长轴方向沿着所述橡胶片的所