Cold-Formed Rectangular Hollow Sections - 400x200x12.0

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.

Individual CAD files can be downloaded as either DWG files or compressed in a ZIP folder

Dimensions

PropertyValue
D mm400
B mm200
t mm12
kg/m104
A cm2132

Full sortable table: Dimensions table for this category

Section Properties

PropertyValue
d/t(1)28.3
b/t(1)11.7
cm426200
cm48980
cm14.1
cm8.24
cm31310
cm3898
cm31660
cm31030
J cm422800
C cm31590
m21.14
m211

Full sortable table: Properties table for this category