Cold-Formed Rectangular Hollow Sections - 300x200x6.0

Cold-formed rectangular hollow sections (RHS) are flat-sided, box-shaped steel tubes made by bending flat steel sheets into shape at room temperature and welding the seam. This cold-shaping process triggers "work hardening," which increases the steel's yield strength and makes the finished tube highly resistant to bending. Their flat, straight faces make them much easier to join, bolt, or weld to other flat structural parts compared to round pipes. Thanks to this practical shape and high strength-to-weight ratio, they are a favorite choice for construction frames, machinery scaffolding, and architectural steelwork.

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Dimensions

PropertyValue
D mm300
B mm200
t mm6
kg/m45.2
A cm257.6

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Ratios for Local Buckling - d/t(1)45
Ratios for Local Buckling - b/t(1)28.3
Second Moment of Area (x-x) - cm47370
Second Moment of Area (y-y) - cm43960
Radius of Gyration (x-x) - cm11.3
Radius of Gyration (y-y) - cm8.29
Elastic Modulus (x-x) - cm3491
Elastic Modulus (y-y) - cm3396
Plastic Modulus (x-x) - cm3588
Plastic Modulus (y-y) - cm3446
Torsional Constants - J cm48120
Torsional Constants - C cm3651
Surface Area (Per Metre) - m20.979
Surface Area (Per Tonne) - m221.6

Full sortable table: Properties table for this category