CHS 31.75x2.65 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 31.75x2.65 steel profile weighs 1.9 kg/m (1.28 lb/ft). Cross-sectional area: 242.264 mm². Moment of inertia Ix = 2.586 cm⁴, Iy = 2.586 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.65 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.6 mm	0.10 in
Diameter (d)	31.8 mm	1.25 in
Weight	1.9 kg/m	1.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	242.26 mm²	0.376 in²
Moment of inertia (Ix)	2.59 cm⁴	0.06 in⁴
Moment of inertia (Iy)	2.59 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	1.63 cm³	0.099 in³
Elastic section modulus (Sy)	1.63 cm³	0.099 in³
Plastic section modulus (Zx)	2.25 cm³	0.137 in³
Plastic section modulus (Zy)	2.25 cm³	0.137 in³
Radius of gyration (rx)	1.03 cm	0.407 in
Radius of gyration (ry)	1.03 cm	0.407 in