CHS 108x20 GOST · Weight & Dimensions

GOST, 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 108x20 steel profile weighs 43.4 kg/m (29.16 lb/ft). Cross-sectional area: 5,529.203 mm². Moment of inertia Ix = 562.873 cm⁴, Iy = 562.873 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20 mm	0.79 in
Diameter (d)	108 mm	4.25 in
Weight	43.4 kg/m	29.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,529.2 mm²	8.570 in²
Moment of inertia (Ix)	562.87 cm⁴	13.52 in⁴
Moment of inertia (Iy)	562.87 cm⁴	13.52 in⁴
Elastic section modulus (Sx)	104.24 cm³	6.361 in³
Elastic section modulus (Sy)	104.24 cm³	6.361 in³
Plastic section modulus (Zx)	157.55 cm³	9.614 in³
Plastic section modulus (Zy)	157.55 cm³	9.614 in³
Radius of gyration (rx)	3.19 cm	1.256 in
Radius of gyration (ry)	3.19 cm	1.256 in