CHS 31.75x2.25 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 31.75x2.25 steel profile weighs 1.6 kg/m (1.10 lb/ft). Cross-sectional area: 208.523 mm². Moment of inertia Ix = 2.282 cm⁴, Iy = 2.282 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.25 mm ≈ 13 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.3 mm	0.09 in
Diameter (d)	31.8 mm	1.25 in
Weight	1.6 kg/m	1.10 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	208.52 mm²	0.323 in²
Moment of inertia (Ix)	2.28 cm⁴	0.05 in⁴
Moment of inertia (Iy)	2.28 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.44 cm³	0.088 in³
Elastic section modulus (Sy)	1.44 cm³	0.088 in³
Plastic section modulus (Zx)	1.96 cm³	0.120 in³
Plastic section modulus (Zy)	1.96 cm³	0.120 in³
Radius of gyration (rx)	1.05 cm	0.412 in
Radius of gyration (ry)	1.05 cm	0.412 in