CHS 68x9 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 68x9 steel profile weighs 13.1 kg/m (8.80 lb/ft). Cross-sectional area: 1,668.186 mm². Moment of inertia Ix = 74.276 cm⁴, Iy = 74.276 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9 mm	0.35 in
Diameter (d)	68 mm	2.68 in
Weight	13.1 kg/m	8.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,668.19 mm²	2.586 in²
Moment of inertia (Ix)	74.28 cm⁴	1.78 in⁴
Moment of inertia (Iy)	74.28 cm⁴	1.78 in⁴
Elastic section modulus (Sx)	21.85 cm³	1.333 in³
Elastic section modulus (Sy)	21.85 cm³	1.333 in³
Plastic section modulus (Zx)	31.57 cm³	1.927 in³
Plastic section modulus (Zy)	31.57 cm³	1.927 in³
Radius of gyration (rx)	2.11 cm	0.831 in
Radius of gyration (ry)	2.11 cm	0.831 in