What are the common specifications (thickness/width) of Q235 steel coils for construction?
A: Thickness 1.5-20mm (commonly 2.0-12mm), width 1000-1800mm (commonly 1250/1500mm), length in coil (standard cutting to size as needed).
What are the common architectural dimensions of Q235 steel coils after cutting?
A: After cutting, they become flat plates, commonly 6000-12000mm in length, and can be cut to the required dimensions for components (e.g., column base plates, purlins).
What is the difference between Q235 steel coils and Q235 steel plates? How to choose between them for construction?
A: Steel coils are coiled materials, suitable for batch, continuous processing (purlins, profiled sheets); steel plates are flat plates of standard length, suitable for single-piece, irregular-shaped processing (node plates, embedded parts).
How is the weight of Q235 steel coils calculated?
A: Theoretical weight (kg) = Thickness (mm) × Width (m) × Length (m) × 7.85 (steel density 7.85t/m³).
What are the common tolerance requirements for Q235 steel coils in construction procurement?
A: Thickness tolerance **±0.15-0.3mm** (graded according to thickness), width tolerance **+5/-0mm**, flatness ≤3mm/m, conforming to GB/T 14977 standard.