CHS 68x4 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 68x4 steel profile weighs 6.3 kg/m (4.24 lb/ft). Cross-sectional area: 804.248 mm². Moment of inertia Ix = 41.338 cm⁴, Iy = 41.338 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	68 mm	2.68 in
Weight	6.3 kg/m	4.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	804.25 mm²	1.247 in²
Moment of inertia (Ix)	41.34 cm⁴	0.99 in⁴
Moment of inertia (Iy)	41.34 cm⁴	0.99 in⁴
Elastic section modulus (Sx)	12.16 cm³	0.742 in³
Elastic section modulus (Sy)	12.16 cm³	0.742 in³
Plastic section modulus (Zx)	16.41 cm³	1.001 in³
Plastic section modulus (Zy)	16.41 cm³	1.001 in³
Radius of gyration (rx)	2.27 cm	0.893 in
Radius of gyration (ry)	2.27 cm	0.893 in