Q: What information needs to be clarified when purchasing DC04 rolls?
A: Standard number, grade, specifications (thickness × width × C), surface grade, edge condition, packaging method, application, and inspection requirements.
Q: What are the permissible thickness deviation standards for DC04?
A: 0.30–0.80mm at PT.B grade accuracy; 0.18–0.30mm at ±10%; truncated edge width deviation 0~+3mm, untruncated edge 0~+20mm.
Q: How to determine if the surface quality of DC04 is acceptable?
A: FC/FD grade is not allowed to have inclusions, holes, or cracks; FB grade is allowed to have minor defects, with single-sided cracks ≤2mm and pyramidal defects ≤40mm.
Q: What should the quality certificate for DC04 include?
A: Furnace batch number, chemical composition, mechanical properties, dimensional tolerances, surface grade, applicable standards, inspection results, and conformity markings.
Q: What factors affect the price of DC04?
A: Specifications (thinner specifications are more expensive), surface grade, purchase quantity, delivery time, coating treatment (such as zinc plating) and market raw material fluctuations.