CHS 203x8 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 203x8 steel profile weighs 38.5 kg/m (25.85 lb/ft). Cross-sectional area: 4,900.885 mm². Moment of inertia Ix = 2,333.372 cm⁴, Iy = 2,333.372 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	203 mm	7.99 in
Weight	38.5 kg/m	25.85 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,900.88 mm²	7.596 in²
Moment of inertia (Ix)	2,333.37 cm⁴	56.06 in⁴
Moment of inertia (Iy)	2,333.37 cm⁴	56.06 in⁴
Elastic section modulus (Sx)	229.89 cm³	14.029 in³
Elastic section modulus (Sy)	229.89 cm³	14.029 in³
Plastic section modulus (Zx)	304.37 cm³	18.574 in³
Plastic section modulus (Zy)	304.37 cm³	18.574 in³
Radius of gyration (rx)	6.9 cm	2.717 in
Radius of gyration (ry)	6.9 cm	2.717 in