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SHS vs RHS: Square vs Rectangular Hollow Section

SHS vs RHS explained — square versus rectangular hollow section, strength axes and when to use each in structural steel.

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SHS vs RHS — Which Hollow Section

Square (SHS) and rectangular (RHS) hollow sections differ mainly in how they carry bending.

SHS (Square)RHS (Rectangular)
BendingEqual both axesStronger about major axis
Best forColumns, axial membersBeams, spanning members
AppearanceSymmetricDirectional

Use SHS for columns and members loaded equally both ways; use RHS for beams where bending is mainly about one axis. Both come in our hollow section range (EN 10219/10210).

Frequently asked questions

When should I use RHS over SHS?

Use RHS for beams and spanning members where bending is mainly about the major axis; it gives more section modulus for the weight.

Are SHS and RHS the same steel?

Yes — same grades (S235–S355), just different cross-section shapes.

Cold-formed or hot-finished?

Both are available: EN 10219 cold-formed and EN 10210 hot-finished.

Need mill-certified steel in bulk?

Steel Pro Rebar Germany Gmbh exports structural steel, rebar, coil, plate and sections worldwide with EN 10204 3.1 MTCs.

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