CHS 355.6x20.6 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 355.6x20.6 steel profile weighs 170.2 kg/m (114.37 lb/ft). Cross-sectional area: 21,680.131 mm². Moment of inertia Ix = 30,528.161 cm⁴, Iy = 30,528.161 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20.6 mm	0.81 in
Diameter (d)	355.6 mm	14.00 in
Weight	170.2 kg/m	114.37 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	21,680.13 mm²	33.604 in²
Moment of inertia (Ix)	30,528.16 cm⁴	733.44 in⁴
Moment of inertia (Iy)	30,528.16 cm⁴	733.44 in⁴
Elastic section modulus (Sx)	1,716.99 cm³	104.778 in³
Elastic section modulus (Sy)	1,716.99 cm³	104.778 in³
Plastic section modulus (Zx)	2,314.75 cm³	141.255 in³
Plastic section modulus (Zy)	2,314.75 cm³	141.255 in³
Radius of gyration (rx)	11.87 cm	4.672 in
Radius of gyration (ry)	11.87 cm	4.672 in