CHS 28.57x1.55 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 28.57x1.55 steel profile weighs 1.0 kg/m (0.69 lb/ft). Cross-sectional area: 131.573 mm². Moment of inertia Ix = 1.205 cm⁴, Iy = 1.205 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.55 mm ≈ 16 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.6 mm	0.06 in
Diameter (d)	28.6 mm	1.12 in
Weight	1.0 kg/m	0.69 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	131.57 mm²	0.204 in²
Moment of inertia (Ix)	1.2 cm⁴	0.03 in⁴
Moment of inertia (Iy)	1.2 cm⁴	0.03 in⁴
Elastic section modulus (Sx)	0.84 cm³	0.051 in³
Elastic section modulus (Sy)	0.84 cm³	0.051 in³
Plastic section modulus (Zx)	1.13 cm³	0.069 in³
Plastic section modulus (Zy)	1.13 cm³	0.069 in³
Radius of gyration (rx)	0.96 cm	0.377 in
Radius of gyration (ry)	0.96 cm	0.377 in