CHS 57x3 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 57x3 steel profile weighs 4.0 kg/m (2.69 lb/ft). Cross-sectional area: 508.938 mm². Moment of inertia Ix = 18.608 cm⁴, Iy = 18.608 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3 mm	0.12 in
Diameter (d)	57 mm	2.24 in
Weight	4.0 kg/m	2.69 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	508.94 mm²	0.789 in²
Moment of inertia (Ix)	18.61 cm⁴	0.45 in⁴
Moment of inertia (Iy)	18.61 cm⁴	0.45 in⁴
Elastic section modulus (Sx)	6.53 cm³	0.398 in³
Elastic section modulus (Sy)	6.53 cm³	0.398 in³
Plastic section modulus (Zx)	8.76 cm³	0.534 in³
Plastic section modulus (Zy)	8.76 cm³	0.534 in³
Radius of gyration (rx)	1.91 cm	0.753 in
Radius of gyration (ry)	1.91 cm	0.753 in