CHS 30x1.95 Gerdau · Weight & Dimensions

Gerdau, tubes · 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 30x1.95 steel profile weighs 1.4 kg/m (0.91 lb/ft). Cross-sectional area: 171.837 mm². Moment of inertia Ix = 1.698 cm⁴, Iy = 1.698 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.95 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.9 mm	0.08 in
Diameter (d)	30 mm	1.18 in
Weight	1.4 kg/m	0.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	171.84 mm²	0.266 in²
Moment of inertia (Ix)	1.7 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.7 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.13 cm³	0.069 in³
Elastic section modulus (Sy)	1.13 cm³	0.069 in³
Plastic section modulus (Zx)	1.54 cm³	0.094 in³
Plastic section modulus (Zy)	1.54 cm³	0.094 in³
Radius of gyration (rx)	0.99 cm	0.391 in
Radius of gyration (ry)	0.99 cm	0.391 in