we should make the raw edges of the seciton as short and tiny as possible to aviod the mutual scratch while cuting and shearing and piling the color -coated sheet.
To timely clear away the cutting scraps and metal powder caused by cutting and shearing .Otherwise this can injure the sheet surface and become the source of scratches or the corrosion to get rust.
While cutting and shearing the color -coated strip,the roller touched with the color-coated sheet should be the rubber roller or other material .The platform touched with the color-coated sheet should be covered with the rubber mat and kept clean to avoid the injury of the coating of the color-coated sheet