CHS 203x17 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 203x17 steel profile weighs 78.0 kg/m (52.40 lb/ft). Cross-sectional area: 9,933.716 mm². Moment of inertia Ix = 4,331.721 cm⁴, Iy = 4,331.721 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	17 mm	0.67 in
Diameter (d)	203 mm	7.99 in
Weight	78.0 kg/m	52.40 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,933.72 mm²	15.397 in²
Moment of inertia (Ix)	4,331.72 cm⁴	104.07 in⁴
Moment of inertia (Iy)	4,331.72 cm⁴	104.07 in⁴
Elastic section modulus (Sx)	426.77 cm³	26.043 in³
Elastic section modulus (Sy)	426.77 cm³	26.043 in³
Plastic section modulus (Zx)	589.77 cm³	35.990 in³
Plastic section modulus (Zy)	589.77 cm³	35.990 in³
Radius of gyration (rx)	6.6 cm	2.600 in
Radius of gyration (ry)	6.6 cm	2.600 in