CHS 68x5 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 68x5 steel profile weighs 7.8 kg/m (5.22 lb/ft). Cross-sectional area: 989.602 mm². Moment of inertia Ix = 49.406 cm⁴, Iy = 49.406 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	5 mm	0.20 in
Diameter (d)	68 mm	2.68 in
Weight	7.8 kg/m	5.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	989.6 mm²	1.534 in²
Moment of inertia (Ix)	49.41 cm⁴	1.19 in⁴
Moment of inertia (Iy)	49.41 cm⁴	1.19 in⁴
Elastic section modulus (Sx)	14.53 cm³	0.887 in³
Elastic section modulus (Sy)	14.53 cm³	0.887 in³
Plastic section modulus (Zx)	19.89 cm³	1.214 in³
Plastic section modulus (Zy)	19.89 cm³	1.214 in³
Radius of gyration (rx)	2.23 cm	0.880 in
Radius of gyration (ry)	2.23 cm	0.880 in