CHS 203x12 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 203x12 steel profile weighs 56.5 kg/m (37.98 lb/ft). Cross-sectional area: 7,200.53 mm². Moment of inertia Ix = 3,296.493 cm⁴, Iy = 3,296.493 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12 mm	0.47 in
Diameter (d)	203 mm	7.99 in
Weight	56.5 kg/m	37.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,200.53 mm²	11.161 in²
Moment of inertia (Ix)	3,296.49 cm⁴	79.20 in⁴
Moment of inertia (Iy)	3,296.49 cm⁴	79.20 in⁴
Elastic section modulus (Sx)	324.78 cm³	19.819 in³
Elastic section modulus (Sy)	324.78 cm³	19.819 in³
Plastic section modulus (Zx)	438.35 cm³	26.750 in³
Plastic section modulus (Zy)	438.35 cm³	26.750 in³
Radius of gyration (rx)	6.77 cm	2.664 in
Radius of gyration (ry)	6.77 cm	2.664 in