... reeling, welding, shaping and surface treatment. PERFORATED METAL MESH Materials: Hot-rolled and coilrolled carbon steel ... hole: round hole, oval hole, oblong hole, square hole, triangle hole, diamond hole, hexagonal hole, cross hole, cinquefoil hole, leave hole, scale hole, hole like shark's mouth and other perforated ... many kinds of punching hole mesh, the diameter of the hole can be any size from ...