CHS 299x75 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 299x75 steel profile weighs 414.3 kg/m (278.42 lb/ft). Cross-sectional area: 52,778.757 mm². Moment of inertia Ix = 36,813.842 cm⁴, Iy = 36,813.842 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	75 mm	2.95 in
Diameter (d)	299 mm	11.77 in
Weight	414.3 kg/m	278.42 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	52,778.76 mm²	81.807 in²
Moment of inertia (Ix)	36,813.84 cm⁴	884.45 in⁴
Moment of inertia (Iy)	36,813.84 cm⁴	884.45 in⁴
Elastic section modulus (Sx)	2,462.46 cm³	150.269 in³
Elastic section modulus (Sy)	2,462.46 cm³	150.269 in³
Plastic section modulus (Zx)	3,903.83 cm³	238.227 in³
Plastic section modulus (Zy)	3,903.83 cm³	238.227 in³
Radius of gyration (rx)	8.35 cm	3.288 in
Radius of gyration (ry)	8.35 cm	3.288 in