CHS 299x6 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 299x6 steel profile weighs 43.4 kg/m (29.13 lb/ft). Cross-sectional area: 5,522.92 mm². Moment of inertia Ix = 5,929.2 cm⁴, Iy = 5,929.2 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6 mm	0.24 in
Diameter (d)	299 mm	11.77 in
Weight	43.4 kg/m	29.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,522.92 mm²	8.561 in²
Moment of inertia (Ix)	5,929.2 cm⁴	142.45 in⁴
Moment of inertia (Iy)	5,929.2 cm⁴	142.45 in⁴
Elastic section modulus (Sx)	396.6 cm³	24.202 in³
Elastic section modulus (Sy)	396.6 cm³	24.202 in³
Plastic section modulus (Zx)	515.17 cm³	31.437 in³
Plastic section modulus (Zy)	515.17 cm³	31.437 in³
Radius of gyration (rx)	10.36 cm	4.079 in
Radius of gyration (ry)	10.36 cm	4.079 in