CHS 28.57x1.25 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 28.57x1.25 steel profile weighs 0.8 kg/m (0.56 lb/ft). Cross-sectional area: 107.285 mm². Moment of inertia Ix = 1.003 cm⁴, Iy = 1.003 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.25 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.3 mm	0.05 in
Diameter (d)	28.6 mm	1.12 in
Weight	0.8 kg/m	0.56 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	107.29 mm²	0.166 in²
Moment of inertia (Ix)	1 cm⁴	0.02 in⁴
Moment of inertia (Iy)	1 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.7 cm³	0.043 in³
Elastic section modulus (Sy)	0.7 cm³	0.043 in³
Plastic section modulus (Zx)	0.93 cm³	0.057 in³
Plastic section modulus (Zy)	0.93 cm³	0.057 in³
Radius of gyration (rx)	0.97 cm	0.381 in
Radius of gyration (ry)	0.97 cm	0.381 in