CHS 68x3 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 68x3 steel profile weighs 4.8 kg/m (3.23 lb/ft). Cross-sectional area: 612.611 mm². Moment of inertia Ix = 32.422 cm⁴, Iy = 32.422 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)	68 mm	2.68 in
Weight	4.8 kg/m	3.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	612.61 mm²	0.950 in²
Moment of inertia (Ix)	32.42 cm⁴	0.78 in⁴
Moment of inertia (Iy)	32.42 cm⁴	0.78 in⁴
Elastic section modulus (Sx)	9.54 cm³	0.582 in³
Elastic section modulus (Sy)	9.54 cm³	0.582 in³
Plastic section modulus (Zx)	12.68 cm³	0.774 in³
Plastic section modulus (Zy)	12.68 cm³	0.774 in³
Radius of gyration (rx)	2.3 cm	0.906 in
Radius of gyration (ry)	2.3 cm	0.906 in