Thickness (mm), width (mm), length (mm), coil inner diameter (mm),1.5 ~ 4.0800 ~1600, 2000 ~ 2500 (or c), and the allowable thickness deviation of φ 580 steel plate and strip shall comply with the provisions in Table 2. Table 2 Nominal thickness (mm) Thickness tolerance (mm) Thickness deviation in width direction after slicing (mm) Thickness deviation in rolling direction after slicing (mm) >; 1.5-2.6 0. 10≤0.05≤0.05 & gt； 2.6-3.0 0. 12≤0.05≤0.05 & gt； 3.0-4.0-0.17 ~+0.12 ≤ 0.05 ≤ 0.051.3 The roughness of steel plate shall not be greater than12 mm. The unit length of roughness measurement is1000 mm. 1.4 The sickle bend of steel plate and steel strip shall not be greater than 4mm every 2 m.. 1.5 the width tolerance of steel plate and steel strip shall comply with the provisions in the following table. Width allowable deviation (mm) thickness range (mm) >: 2.0-2.8 > 2.8-3.5 Trim 0~+3 0~+5 without deduction of +20 (target value+10) 1.6 The head and tail overflow edge of steel coil shall not be greater than 40mm, and the middle overflow edge and tower height shall not be greater than 30mm.