CHS 33x3.38 IMCA · Weight & Dimensions

IMCA, cold-formed sections · 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 33x3.38 steel profile weighs 2.5 kg/m (1.66 lb/ft). Cross-sectional area: 314.522 mm². Moment of inertia Ix = 3.494 cm⁴, Iy = 3.494 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.38 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.4 mm	0.13 in
Diameter (d)	33 mm	1.30 in
Weight	2.5 kg/m	1.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	314.52 mm²	0.488 in²
Moment of inertia (Ix)	3.49 cm⁴	0.08 in⁴
Moment of inertia (Iy)	3.49 cm⁴	0.08 in⁴
Elastic section modulus (Sx)	2.12 cm³	0.129 in³
Elastic section modulus (Sy)	2.12 cm³	0.129 in³
Plastic section modulus (Zx)	2.98 cm³	0.182 in³
Plastic section modulus (Zy)	2.98 cm³	0.182 in³
Radius of gyration (rx)	1.05 cm	0.415 in
Radius of gyration (ry)	1.05 cm	0.415 in