CHS 299x12 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 299x12 steel profile weighs 84.9 kg/m (57.07 lb/ft). Cross-sectional area: 10,819.645 mm². Moment of inertia Ix = 11,159.517 cm⁴, Iy = 11,159.517 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12 mm	0.47 in
Diameter (d)	299 mm	11.77 in
Weight	84.9 kg/m	57.07 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,819.65 mm²	16.770 in²
Moment of inertia (Ix)	11,159.52 cm⁴	268.11 in⁴
Moment of inertia (Iy)	11,159.52 cm⁴	268.11 in⁴
Elastic section modulus (Sx)	746.46 cm³	45.552 in³
Elastic section modulus (Sy)	746.46 cm³	45.552 in³
Plastic section modulus (Zx)	989 cm³	60.353 in³
Plastic section modulus (Zy)	989 cm³	60.353 in³
Radius of gyration (rx)	10.16 cm	3.998 in
Radius of gyration (ry)	10.16 cm	3.998 in