CHS 203x16 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 203x16 steel profile weighs 73.8 kg/m (49.59 lb/ft). Cross-sectional area: 9,399.645 mm². Moment of inertia Ix = 4,138.781 cm⁴, Iy = 4,138.781 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	16 mm	0.63 in
Diameter (d)	203 mm	7.99 in
Weight	73.8 kg/m	49.59 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,399.65 mm²	14.569 in²
Moment of inertia (Ix)	4,138.78 cm⁴	99.43 in⁴
Moment of inertia (Iy)	4,138.78 cm⁴	99.43 in⁴
Elastic section modulus (Sx)	407.76 cm³	24.883 in³
Elastic section modulus (Sy)	407.76 cm³	24.883 in³
Plastic section modulus (Zx)	560.87 cm³	34.226 in³
Plastic section modulus (Zy)	560.87 cm³	34.226 in³
Radius of gyration (rx)	6.64 cm	2.612 in
Radius of gyration (ry)	6.64 cm	2.612 in