The steel plate with pattern on the surface is called the pattern plate, the English name is diamond plate. The pattern is a mixed shape of lentil, rhombus, round bean, and oblate. The lentil shape is the most common in the market. Places of production: Laiwu Steel, Rizhao, Benxi Iron and Steel, Shougang, Ninggang, Meishan Iron and Steel, Anshan Iron and Steel, Taiyuan Iron and Steel, Beitai, etc.