H-shaped steel bridge steel columns hot-rolled galvanized Q235B Q355B steel structure

H-shaped steel is widely used, mainly in various civil and industrial building structures; Various large-span industrial factories and modern high-rise buildings, especially in areas with frequent seismic activity and industrial factories under high-temperature working conditions; Large bridges with high load-bearing capacity, good cross-sectional stability, and large spans are required; Heavy equipment; Highways; Ship skeleton; Mine support; Foundation treatment and dam engineering; Various machine components.