Q: What factors influence the price of SPCC sheet? What will the approximate market price be in 2024?
A: Factors influencing price: ① Raw materials (hot-rolled coil price, accounting for over 70% of the cost); ② Specifications (thin gauges <0.5mm are 20%-30% higher than thick gauges >2.0mm); ③ Order volume (bulk orders of 10 tons or more are 5%-10% lower than small orders); ④ Surface treatment (PC grade is 5%-8% higher than SD grade). The market price in 2024 is approximately 4,500-5,500 yuan/ton (specific prices vary slightly by region and supplier).
Q: How is the quality of SPCC sheet inspected? What are the key inspection items?
A: Core inspection items: ① Appearance (no rust, scratches, creases, and a smooth surface); ② Dimensions (measure thickness and width with calipers, with tolerances meeting standards); ③ Mechanical properties (tensile testing of samples to measure yield strength, tensile strength, and elongation); ④ Chemical composition (spectroscopy to measure C, Mn, P, and S content, meeting standards).
Q: What is the shelf life of SPCC board? How can it be stored to extend its shelf life?
A: Unprocessed SPCC board (with anti-rust oil and sealed packaging) has a shelf life of 6 months in a dry environment at room temperature. Storage requirements: ① Avoid moisture (humidity ≤ 60%) and keep away from water; ② Avoid direct sunlight (to prevent evaporation of the anti-rust oil); ③ Stacking height ≤ 1.5 meters (to avoid deformation); ④ Regular inspection (check for rust every month).
Q: When purchasing SPCC board, how do I choose between "rolled" and "flat" sheets?
A: Choose according to your processing needs: ① Coiled sheet: Suitable for continuous processing (such as continuous stamping and continuous bending), large order volumes (≥5 tons), and 5%-8% lower cost than flat sheet. ② Flat sheet: Suitable for small-batch processing (<5 tons), no cutting required, ready for use (such as small hardware and brackets), but an additional cutting fee is required.
Q: If SPCC sheet has quality issues (such as substandard strength or surface rust), how can I protect my rights?
A: Steps to protect your rights: ① Retain the problematic sample, purchase contract, and quality inspection report; ② Contact the supplier promptly (within 3 business days) to explain the issue (attach photos and test data); ③ Negotiate a solution (return, exchange, restocking, compensation); ④ If negotiations fail, you can entrust a third-party testing agency (such as SGS or the National Iron and Steel Materials Testing Center) to issue a test report and pursue legal action.