What are the common welding methods for S235JR?
A: Arc welding, CO₂ shielded welding, submerged arc welding, and TIG welding are all acceptable.
Does S235JR welding require preheating?
A: Generally, thin plates do not require preheating; for thick plates, low temperatures, and high restraint conditions, preheating to 80–120℃ is recommended.
What are the commonly used electrode types for S235JR?
A: E43 series, such as J422 and J427.
Can S235JR be used for punching, shearing, and drilling?
A: Absolutely, it has excellent machinability.
What components is S235JR mainly used for in construction?
A: Steel beams, steel columns, purlins, supports, embedded parts, stairs, railings, curtain wall framing, etc.