... metal sheet:Materials: cold-rolled steel plate, hot-rolled steel plate, aluminum plate, stainless steel plate, zinc plate, aluminum molded plate etc.Opening shapes: rectangular, square, circular ... , Opening Dia. : 0. 3-100mmSpec: 1. Thinkness of the coil plate: 0. 1mm-25mm; Length: 20m2. Openin Dia: 0. 3mm-25mmProcessing ...