What are the common anti-corrosion methods for S235JR?
A: Hot-dip galvanizing, epoxy zinc-rich primer, fluorocarbon topcoat, powder coating.
What is the fire resistance of S235JR?
A: Bare steel has poor fire resistance; fire-retardant coatings or fire-retardant coverings are necessary in buildings.
What is the difference between S235JR and S235J0?
A: J0 is for 0°C impact testing, while JR is for 20°C impact testing; JR is preferred for buildings operating at normal temperatures.
What is the difference between S235JR and S235J2?
A: J2 is for -20°C impact testing and is used in low-temperature environments/more critical structures.
How to choose between S235JR and S355JR?
A: S235JR is used for light-load and ordinary buildings; S355JR is used for large-span and heavy-load structures.