CHS 20x1.06 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 20x1.06 steel profile weighs 0.5 kg/m (0.34 lb/ft). Cross-sectional area: 63.072 mm². Moment of inertia Ix = 0.284 cm⁴, Iy = 0.284 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.06 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.1 mm	0.04 in
Diameter (d)	20 mm	0.79 in
Weight	0.5 kg/m	0.34 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	63.07 mm²	0.098 in²
Moment of inertia (Ix)	0.28 cm⁴	0.01 in⁴
Moment of inertia (Iy)	0.28 cm⁴	0.01 in⁴
Elastic section modulus (Sx)	0.28 cm³	0.017 in³
Elastic section modulus (Sy)	0.28 cm³	0.017 in³
Plastic section modulus (Zx)	0.38 cm³	0.023 in³
Plastic section modulus (Zy)	0.38 cm³	0.023 in³
Radius of gyration (rx)	0.67 cm	0.264 in
Radius of gyration (ry)	0.67 cm	0.264 in