Common Quality Complaints?
Horizontal creases, rust, dimensional deviations, mechanical defects, edge cracks, inclusions.
Acceptance Standards?
According to GB/T 700: appearance, dimensions, mechanical properties, composition; tensile and impact tests for each batch.
Theoretical Weight Calculation?
Weight (kg) = Thickness (mm) × Width (m) × Length (m) × 7.85; Example: 3 × 1500 × 6000 mm = 3 × 1.5 × 6 × 7.85 = 211.95 kg.
Storage Precautions?
Dry and ventilated, elevated to prevent moisture, avoid rain; rust-preventive oil has an effective period of 3–6 months, regular inspection is required.
Price Influencing Factors?
Grade (D > C > B > A), thickness (price difference between thin and thick), surface finish (cold rolled > hot rolled), steel mill, market conditions, freight.