CHS 33.4x4.6 Açotubo · Weight & Dimensions

Açotubo, 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 33.4x4.6 steel profile weighs 3.3 kg/m (2.20 lb/ft). Cross-sectional area: 416.198 mm². Moment of inertia Ix = 4.425 cm⁴, Iy = 4.425 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.6 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.6 mm	0.18 in
Diameter (d)	33.4 mm	1.31 in
Weight	3.3 kg/m	2.20 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	416.2 mm²	0.645 in²
Moment of inertia (Ix)	4.43 cm⁴	0.11 in⁴
Moment of inertia (Iy)	4.43 cm⁴	0.11 in⁴
Elastic section modulus (Sx)	2.65 cm³	0.162 in³
Elastic section modulus (Sy)	2.65 cm³	0.162 in³
Plastic section modulus (Zx)	3.85 cm³	0.235 in³
Plastic section modulus (Zy)	3.85 cm³	0.235 in³
Radius of gyration (rx)	1.03 cm	0.406 in
Radius of gyration (ry)	1.03 cm	0.406 in