CHS 159x20 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 159x20 steel profile weighs 68.6 kg/m (46.07 lb/ft). Cross-sectional area: 8,733.628 mm². Moment of inertia Ix = 2,152.948 cm⁴, Iy = 2,152.948 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20 mm	0.79 in
Diameter (d)	159 mm	6.26 in
Weight	68.6 kg/m	46.07 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,733.63 mm²	13.537 in²
Moment of inertia (Ix)	2,152.95 cm⁴	51.72 in⁴
Moment of inertia (Iy)	2,152.95 cm⁴	51.72 in⁴
Elastic section modulus (Sx)	270.81 cm³	16.526 in³
Elastic section modulus (Sy)	270.81 cm³	16.526 in³
Plastic section modulus (Zx)	389.09 cm³	23.744 in³
Plastic section modulus (Zy)	389.09 cm³	23.744 in³
Radius of gyration (rx)	4.97 cm	1.955 in
Radius of gyration (ry)	4.97 cm	1.955 in