Intumescent paint (60-120 minute rating). Concrete encasement (cheaper but heavy). Mineral wool boards for lightweight protection. Dubai high-rises require 2-hour ratings.
Why use weathering steel beams?
Corten steel forms protective patina, eliminating painting. Ideal for bridges in Scandinavia. Contains copper/phosphorus for enhanced corrosion resistance.
How to prevent installation errors?
Laser alignment ensures ±3mm positioning. Use calibrated torque wrenches for connections. Brazilian sites require third-party inspection of all critical welds.
What are the machining capabilities?
CNC drilling for bolt patterns up to 50mm diameter. End milling creates perfect 90° bearing surfaces. Korean factories offer robotic machining centers.
How does JIS G3101 compare to ASTM?
Japanese standard emphasizes tighter chemical controls (lower P/S content). More stringent impact testing requirements. Preferred for Pacific Rim earthquake zones.
