CHS 203x11 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 203x11 steel profile weighs 52.1 kg/m (35.00 lb/ft). Cross-sectional area: 6,635.044 mm². Moment of inertia Ix = 3,067.464 cm⁴, Iy = 3,067.464 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	11 mm	0.43 in
Diameter (d)	203 mm	7.99 in
Weight	52.1 kg/m	35.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,635.04 mm²	10.284 in²
Moment of inertia (Ix)	3,067.46 cm⁴	73.70 in⁴
Moment of inertia (Iy)	3,067.46 cm⁴	73.70 in⁴
Elastic section modulus (Sx)	302.21 cm³	18.442 in³
Elastic section modulus (Sy)	302.21 cm³	18.442 in³
Plastic section modulus (Zx)	405.95 cm³	24.773 in³
Plastic section modulus (Zy)	405.95 cm³	24.773 in³
Radius of gyration (rx)	6.8 cm	2.677 in
Radius of gyration (ry)	6.8 cm	2.677 in