CHS 203x40 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 203x40 steel profile weighs 160.8 kg/m (108.05 lb/ft). Cross-sectional area: 20,483.184 mm². Moment of inertia Ix = 7,212.385 cm⁴, Iy = 7,212.385 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	40 mm	1.57 in
Diameter (d)	203 mm	7.99 in
Weight	160.8 kg/m	108.05 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,483.18 mm²	31.749 in²
Moment of inertia (Ix)	7,212.39 cm⁴	173.28 in⁴
Moment of inertia (Iy)	7,212.39 cm⁴	173.28 in⁴
Elastic section modulus (Sx)	710.58 cm³	43.362 in³
Elastic section modulus (Sy)	710.58 cm³	43.362 in³
Plastic section modulus (Zx)	1,084.09 cm³	66.156 in³
Plastic section modulus (Zy)	1,084.09 cm³	66.156 in³
Radius of gyration (rx)	5.93 cm	2.336 in
Radius of gyration (ry)	5.93 cm	2.336 in