Q235 steel coil density?
A: The general density is 7.85 g/cm³. This value can be directly used when calculating weight, as there is no material deviation.
Q235 steel coil delivery conditions?
A: Hot-rolled steel coils are in the hot-rolled state (HR), with a black/oxide scale surface; cold-rolled steel coils are in the cold-rolled annealed state (CR), with a bright/pickled surface, and some can be phosphated or oiled.
Q235 hot-rolled steel coil standard specifications?
A: Thickness 1.5-20mm, width 900-1800mm (mainstream 1250/1500mm), inner diameter 508/610mm, single coil weight 3-30 tons, leveling and slitting can be customized.
Q235 cold-rolled steel coil standard specifications?
A: Thickness 0.3-3.0mm, width 600-1500mm, inner diameter 508mm, single coil weight 1-15 tons, higher surface precision, and smaller thickness tolerance.
What are the thickness tolerance standards for Q235 steel coils?
A: Hot-rolled coils conform to GB/T 3274, with ordinary precision ±0.05~±0.2mm and high precision ±0.03~±0.08mm; cold-rolled coils conform to GB/T 11253, with ordinary precision ±0.02~±0.05mm.