CHS 30x1.2 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 30x1.2 steel profile weighs 0.8 kg/m (0.57 lb/ft). Cross-sectional area: 108.573 mm². Moment of inertia Ix = 1.128 cm⁴, Iy = 1.128 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.2 mm	0.05 in
Diameter (d)	30 mm	1.18 in
Weight	0.8 kg/m	0.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	108.57 mm²	0.168 in²
Moment of inertia (Ix)	1.13 cm⁴	0.03 in⁴
Moment of inertia (Iy)	1.13 cm⁴	0.03 in⁴
Elastic section modulus (Sx)	0.75 cm³	0.046 in³
Elastic section modulus (Sy)	0.75 cm³	0.046 in³
Plastic section modulus (Zx)	1 cm³	0.061 in³
Plastic section modulus (Zy)	1 cm³	0.061 in³
Radius of gyration (rx)	1.02 cm	0.401 in
Radius of gyration (ry)	1.02 cm	0.401 in