CHS 57x8 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 57x8 steel profile weighs 9.7 kg/m (6.50 lb/ft). Cross-sectional area: 1,231.504 mm². Moment of inertia Ix = 37.946 cm⁴, Iy = 37.946 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	57 mm	2.24 in
Weight	9.7 kg/m	6.50 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,231.5 mm²	1.909 in²
Moment of inertia (Ix)	37.95 cm⁴	0.91 in⁴
Moment of inertia (Iy)	37.95 cm⁴	0.91 in⁴
Elastic section modulus (Sx)	13.31 cm³	0.812 in³
Elastic section modulus (Sy)	13.31 cm³	0.812 in³
Plastic section modulus (Zx)	19.38 cm³	1.183 in³
Plastic section modulus (Zy)	19.38 cm³	1.183 in³
Radius of gyration (rx)	1.76 cm	0.691 in
Radius of gyration (ry)	1.76 cm	0.691 in