CHS 168.3x16.3 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 168.3x16.3 steel profile weighs 61.1 kg/m (41.06 lb/ft). Cross-sectional area: 7,783.61 mm². Moment of inertia Ix = 2,273.757 cm⁴, Iy = 2,273.757 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	16.3 mm	0.64 in
Diameter (d)	168.3 mm	6.63 in
Weight	61.1 kg/m	41.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,783.61 mm²	12.065 in²
Moment of inertia (Ix)	2,273.76 cm⁴	54.63 in⁴
Moment of inertia (Iy)	2,273.76 cm⁴	54.63 in⁴
Elastic section modulus (Sx)	270.2 cm³	16.489 in³
Elastic section modulus (Sy)	270.2 cm³	16.489 in³
Plastic section modulus (Zx)	378.04 cm³	23.069 in³
Plastic section modulus (Zy)	378.04 cm³	23.069 in³
Radius of gyration (rx)	5.4 cm	2.128 in
Radius of gyration (ry)	5.4 cm	2.128 in