CHS 30x3 Hiasa · Weight & Dimensions

Hiasa, cold-formed sections · Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 30x3 steel profile weighs 2.0 kg/m (1.34 lb/ft). Cross-sectional area: 254.469 mm². Moment of inertia Ix = 2.347 cm⁴, Iy = 2.347 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3 mm	0.12 in
Diameter (d)	30 mm	1.18 in
Weight	2.0 kg/m	1.34 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	254.47 mm²	0.394 in²
Moment of inertia (Ix)	2.35 cm⁴	0.06 in⁴
Moment of inertia (Iy)	2.35 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	1.56 cm³	0.096 in³
Elastic section modulus (Sy)	1.56 cm³	0.096 in³
Plastic section modulus (Zx)	2.2 cm³	0.134 in³
Plastic section modulus (Zy)	2.2 cm³	0.134 in³
Radius of gyration (rx)	0.96 cm	0.378 in
Radius of gyration (ry)	0.96 cm	0.378 in