Q: What is the theoretical weight calculation formula of Q355 coil?
A: Weight (kg) = Thickness (mm) × Width (m) × Length (m) × 7.85. The weight of the coil is calculated according to the actual unfolded length.
32. Q: What is the packaging standard of Q355 coil?
A: Usually bundled with steel strips, with moisture-proof paper or anti-rust film, and corner protectors added on the outside, marking specifications, heat number, net weight, gross weight, destination, etc.
33. Q: What is the difference between futures and spot goods of Q355 coil?
A: Futures are produced according to orders, with a cycle of 30-60 days, and specifications and grades can be customized; spot goods have a short delivery time, limited specifications, and prices fluctuate with the market.
34. Q: What are the factors affecting the price of Q355 coil?
A: Raw materials (iron ore, coking coal), alloy cost, rolling process, quality grade, specifications, order quantity, transportation distance, etc.
35. Q: Can Q355 coil replace S355JR coil for European customers?
A: Written confirmation from the customer is required. Due to differences in chemical composition, impact test methods and inspection standards between the two, it is preferred to supply according to the grade specified by the customer, or provide a performance matching report.