CHS 299x17 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 299x17 steel profile weighs 118.2 kg/m (79.45 lb/ft). Cross-sectional area: 15,060.795 mm². Moment of inertia Ix = 15,025.591 cm⁴, Iy = 15,025.591 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	17 mm	0.67 in
Diameter (d)	299 mm	11.77 in
Weight	118.2 kg/m	79.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,060.8 mm²	23.344 in²
Moment of inertia (Ix)	15,025.59 cm⁴	360.99 in⁴
Moment of inertia (Iy)	15,025.59 cm⁴	360.99 in⁴
Elastic section modulus (Sx)	1,005.06 cm³	61.333 in³
Elastic section modulus (Sy)	1,005.06 cm³	61.333 in³
Plastic section modulus (Zx)	1,353.55 cm³	82.599 in³
Plastic section modulus (Zy)	1,353.55 cm³	82.599 in³
Radius of gyration (rx)	9.99 cm	3.932 in
Radius of gyration (ry)	9.99 cm	3.932 in