Q235 steel coil minimum order quantity?
A: The minimum order quantity for regular steel mills is one heat number (approximately 30-50 tons). Traders can provide small batch purchases (1-10 tons). Slitting and leveling products can be customized as needed, with no minimum order quantity limit.
Q235 steel coil rust prevention methods:
A: Hot-rolled coils: The surface has an oxide scale for natural rust prevention; no additional treatment is needed for short-distance transportation. Cold-rolled/pickled coils: The surface is coated with rust-preventive oil and packaged with moisture-proof paper and plastic film. For long-term storage, galvanizing or painting can be used.
Q235 steel coil storage precautions:
A: Store in a dry, ventilated indoor/shed environment, avoiding rain and water accumulation. Store coils upright with wooden blocks underneath to prevent direct contact with the ground. Oiled coils generally have a storage period of 3-6 months; use promptly after opening and reseal immediately.
Q235 steel coil surface scratches, oxidation, deformation, and other quality problems should be handled. A: Communicate with the supplier promptly using the warranty certificate, purchase contract, and on-site photos. For quality issues not caused by human error, you can request returns, replacements, or a price reduction. For damage caused by human error (such as improper storage or processing), the purchaser is responsible.
Q235 steel coil: What is the shelf life?
A: There is no explicitly stated shelf life; it depends on the storage conditions. Oiled cold-rolled coils have a rust-proof period of 6-12 months in a sealed, dry environment. Hot-rolled coils can be stored for a long time in a dry environment; oxide scale peeling does not affect mechanical properties, only the surface appearance.