CHS 299x28 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 299x28 steel profile weighs 187.1 kg/m (125.75 lb/ft). Cross-sectional area: 23,838.405 mm². Moment of inertia Ix = 22,117.57 cm⁴, Iy = 22,117.57 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	28 mm	1.10 in
Diameter (d)	299 mm	11.77 in
Weight	187.1 kg/m	125.75 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	23,838.41 mm²	36.950 in²
Moment of inertia (Ix)	22,117.57 cm⁴	531.37 in⁴
Moment of inertia (Iy)	22,117.57 cm⁴	531.37 in⁴
Elastic section modulus (Sx)	1,479.44 cm³	90.281 in³
Elastic section modulus (Sy)	1,479.44 cm³	90.281 in³
Plastic section modulus (Zx)	2,063.67 cm³	125.933 in³
Plastic section modulus (Zy)	2,063.67 cm³	125.933 in³
Radius of gyration (rx)	9.63 cm	3.792 in
Radius of gyration (ry)	9.63 cm	3.792 in