Q: What are the main application areas of Q235 steel coils?
A: Widely used in construction engineering (such as steel structure beams and columns, scaffolding), machinery manufacturing (such as equipment bases and supports), automotive parts (such as chassis accessories), appliance housings, container side panels, etc.
Q: Can Q235 steel coils be used to manufacture pressure vessels?
A: No. The toughness and fatigue resistance of Q235 do not meet the safety requirements for pressure vessels. Pressure vessels require the use of specialized pressure vessel steel (such as Q345R).
Q: What are the surface defects of Q235 steel coils?
A: Common surface defects include iron oxide scale, pitting, scratches, edge burrs, and wavy deformation, which can be treated by pickling and grinding.
Q: What precautions should be taken when storing Q235 steel coils?
A: ① Store in a dry and ventilated warehouse, avoiding exposure to rain; ② Elevate the bottom of the coils with sleepers to prevent ground moisture from causing rust; ③ Stack coils of different specifications separately and label them clearly.
Q: What precautions should be taken during the transportation of Q235 steel coils?
A: ① Secure the coils with steel straps to prevent them from rolling during transport; ② Cover them with tarpaulins to prevent them from getting wet and rusting; ③ Use lifting equipment during loading and unloading to prevent the edges of the coils from deforming.