RHS 30x20x2 · Weight & Dimensions

BR — Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 30x20 cal 15 (México) · Caño estructural 30x20 (Argentina)

The RHS 30x20x2 steel profile weighs 1.4 kg/m (0.91 lb/ft), has a depth of 30 mm (1.18 in), flange width 20 mm (0.79 in). Cross-sectional area: 184 mm². Moment of inertia Ix = 2.16 cm⁴, Iy = 1.11 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	30 mm	1.18 in
Width (b)	20 mm	0.79 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	1.4 kg/m	0.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	184 mm²	0.285 in²
Moment of inertia (Ix)	2.16 cm⁴	0.05 in⁴
Moment of inertia (Iy)	1.11 cm⁴	0.03 in⁴
Elastic section modulus (Sx)	1.44 cm³	0.088 in³
Elastic section modulus (Sy)	1.11 cm³	0.068 in³
Plastic section modulus (Zx)	1.8 cm³	0.110 in³
Plastic section modulus (Zy)	1.34 cm³	0.082 in³
Radius of gyration (rx)	1.08 cm	0.425 in
Radius of gyration (ry)	0.78 cm	0.307 in