Cold-Formed Rectangular Hollow Sections - 200x120x5.0

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 mm200
B mm120
t mm5
kg/m23.8
A cm230.4

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
Ratios for Local Buckling - d/t(1)35
Ratios for Local Buckling - b/t(1)19
Second Moment of Area (x-x) - cm41650
Second Moment of Area (y-y) - cm4750
Radius of Gyration (x-x) - cm7.37
Radius of Gyration (y-y) - cm4.97
Elastic Modulus (x-x) - cm3165
Elastic Modulus (y-y) - cm3125
Plastic Modulus (x-x) - cm3201
Plastic Modulus (y-y) - cm3141
Torsional Constants - J cm41650
Torsional Constants - C cm3210
Surface Area (Per Metre) - m20.623
Surface Area (Per Tonne) - m226.1

Full sortable table: Properties table for this category