□200×100×6 □200×100×6 Rectangular tube (GB/T 6728) RHS 200 100 6 15 3332 26.1567 16718936 167189 210130 70.8349 5690515 113810 129927 41.3256 14216137 0.5742 0.5365 Pending verification – nominal dimensions entered by the application developer GB/T 6728:2017 Cold formed steel hollow sections for general structure 2017 2017 2026-10-12 UNVERIFIED Outer corner radius assumed as 2.5t (GB/T 6728 permits a range) for property calculation; confirm against GB/T 6728:2017 Cold formed steel hollow sections for general structure and the manufacturer catalogue. Typical grade: Q355B. popular