CHS 203x20 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 203x20 steel profile weighs 90.3 kg/m (60.65 lb/ft). Cross-sectional area: 11,498.229 mm². Moment of inertia Ix = 4,870.794 cm⁴, Iy = 4,870.794 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	20 mm	0.79 in
Diameter (d)	203 mm	7.99 in
Weight	90.3 kg/m	60.65 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,498.23 mm²	17.822 in²
Moment of inertia (Ix)	4,870.79 cm⁴	117.02 in⁴
Moment of inertia (Iy)	4,870.79 cm⁴	117.02 in⁴
Elastic section modulus (Sx)	479.88 cm³	29.284 in³
Elastic section modulus (Sy)	479.88 cm³	29.284 in³
Plastic section modulus (Zx)	672.45 cm³	41.035 in³
Plastic section modulus (Zy)	672.45 cm³	41.035 in³
Radius of gyration (rx)	6.51 cm	2.562 in
Radius of gyration (ry)	6.51 cm	2.562 in