CHS 299x25 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 299x25 steel profile weighs 168.9 kg/m (113.52 lb/ft). Cross-sectional area: 21,519.91 mm². Moment of inertia Ix = 20,363.484 cm⁴, Iy = 20,363.484 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	25 mm	0.98 in
Diameter (d)	299 mm	11.77 in
Weight	168.9 kg/m	113.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	21,519.91 mm²	33.356 in²
Moment of inertia (Ix)	20,363.48 cm⁴	489.23 in⁴
Moment of inertia (Iy)	20,363.48 cm⁴	489.23 in⁴
Elastic section modulus (Sx)	1,362.11 cm³	83.121 in³
Elastic section modulus (Sy)	1,362.11 cm³	83.121 in³
Plastic section modulus (Zx)	1,882.11 cm³	114.854 in³
Plastic section modulus (Zy)	1,882.11 cm³	114.854 in³
Radius of gyration (rx)	9.73 cm	3.830 in
Radius of gyration (ry)	9.73 cm	3.830 in