CHS 299x63 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 299x63 steel profile weighs 366.7 kg/m (246.40 lb/ft). Cross-sectional area: 46,709.2 mm². Moment of inertia Ix = 34,836.305 cm⁴, Iy = 34,836.305 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	63 mm	2.48 in
Diameter (d)	299 mm	11.77 in
Weight	366.7 kg/m	246.40 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	46,709.2 mm²	72.399 in²
Moment of inertia (Ix)	34,836.3 cm⁴	836.94 in⁴
Moment of inertia (Iy)	34,836.3 cm⁴	836.94 in⁴
Elastic section modulus (Sx)	2,330.19 cm³	142.197 in³
Elastic section modulus (Sy)	2,330.19 cm³	142.197 in³
Plastic section modulus (Zx)	3,592.2 cm³	219.210 in³
Plastic section modulus (Zy)	3,592.2 cm³	219.210 in³
Radius of gyration (rx)	8.64 cm	3.400 in
Radius of gyration (ry)	8.64 cm	3.400 in