According to the general provisions on size, weight and permissible deviation of colour coated coils in the Chinese GB/T 12754-2019 standard, the width requirement of prepainted steel coils usually ranges from 600mm to 1,250mm, and its deviation of width is usually plus or minus 0.5mm, and its deviation of width is usually plus or minus 0.5mm. The thickness requirement of prepainted steel coils usually ranges from 0.18mm to 1.20mm, and its deviation of thickness is usually plus or minus 0.01mm. The weight per unit area of prepainted steel coils is usually between 120g/m²and 275g/m², and its weight per unit area deviation is generally plus or minus 7%.

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