Q: What are the key parameters for purchasing DC04?
A: Thickness, width, surface grade (FB/FC/FD), mechanical properties (r/n value), delivery condition (roll/sheet), and packaging requirements.
Q: How to verify the authenticity of DC04 material?
A: Check the quality certificate (chemical composition/mechanical properties/standard number). If necessary, perform spectral analysis and tensile testing on samples.
Q: What are the key points for dimensional and appearance inspection of DC04?
A: Use a micrometer to measure thickness uniformity, visually/under light to check surface defects, and use a tape measure/sickle bend tester to measure shape accuracy.
Q: What are the storage requirements for DC04?
A: Keep it dry and ventilated, avoid rain and contact with acids and alkalis; store rolls and sheets vertically, and flat sheets in layers with paper separating them to prevent rust and scratches.
Q: What are common quality disputes regarding DC04 and how are they handled? A: Most objections are due to dimensional deviations, surface defects, or substandard performance. We retain the samples and batch numbers and negotiate with the supplier for returns, exchanges, or claims in accordance with the standards.