CHS 299x56 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 299x56 steel profile weighs 335.6 kg/m (225.52 lb/ft). Cross-sectional area: 42,750.793 mm². Moment of inertia Ix = 33,230.726 cm⁴, Iy = 33,230.726 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	56 mm	2.20 in
Diameter (d)	299 mm	11.77 in
Weight	335.6 kg/m	225.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	42,750.79 mm²	66.264 in²
Moment of inertia (Ix)	33,230.73 cm⁴	798.37 in⁴
Moment of inertia (Iy)	33,230.73 cm⁴	798.37 in⁴
Elastic section modulus (Sx)	2,222.79 cm³	135.644 in³
Elastic section modulus (Sy)	2,222.79 cm³	135.644 in³
Plastic section modulus (Zx)	3,365.28 cm³	205.363 in³
Plastic section modulus (Zy)	3,365.28 cm³	205.363 in³
Radius of gyration (rx)	8.82 cm	3.471 in
Radius of gyration (ry)	8.82 cm	3.471 in