CHS 28x3 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 28x3 steel profile weighs 1.9 kg/m (1.24 lb/ft). Cross-sectional area: 235.619 mm². Moment of inertia Ix = 1.867 cm⁴, Iy = 1.867 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)	28 mm	1.10 in
Weight	1.9 kg/m	1.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	235.62 mm²	0.365 in²
Moment of inertia (Ix)	1.87 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.87 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.33 cm³	0.081 in³
Elastic section modulus (Sy)	1.33 cm³	0.081 in³
Plastic section modulus (Zx)	1.88 cm³	0.115 in³
Plastic section modulus (Zy)	1.88 cm³	0.115 in³
Radius of gyration (rx)	0.89 cm	0.350 in
Radius of gyration (ry)	0.89 cm	0.350 in