CHS 299x8 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 299x8 steel profile weighs 57.4 kg/m (38.58 lb/ft). Cross-sectional area: 7,313.628 mm². Moment of inertia Ix = 7,747.417 cm⁴, Iy = 7,747.417 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	299 mm	11.77 in
Weight	57.4 kg/m	38.58 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,313.63 mm²	11.336 in²
Moment of inertia (Ix)	7,747.42 cm⁴	186.13 in⁴
Moment of inertia (Iy)	7,747.42 cm⁴	186.13 in⁴
Elastic section modulus (Sx)	518.22 cm³	31.624 in³
Elastic section modulus (Sy)	518.22 cm³	31.624 in³
Plastic section modulus (Zx)	677.62 cm³	41.351 in³
Plastic section modulus (Zy)	677.62 cm³	41.351 in³
Radius of gyration (rx)	10.29 cm	4.052 in
Radius of gyration (ry)	10.29 cm	4.052 in