CHS 25x8 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 25x8 steel profile weighs 3.4 kg/m (2.25 lb/ft). Cross-sectional area: 427.257 mm². Moment of inertia Ix = 1.885 cm⁴, Iy = 1.885 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	25 mm	0.98 in
Weight	3.4 kg/m	2.25 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	427.26 mm²	0.662 in²
Moment of inertia (Ix)	1.89 cm⁴	0.05 in⁴
Moment of inertia (Iy)	1.89 cm⁴	0.05 in⁴
Elastic section modulus (Sx)	1.51 cm³	0.092 in³
Elastic section modulus (Sy)	1.51 cm³	0.092 in³
Plastic section modulus (Zx)	2.48 cm³	0.152 in³
Plastic section modulus (Zy)	2.48 cm³	0.152 in³
Radius of gyration (rx)	0.66 cm	0.262 in
Radius of gyration (ry)	0.66 cm	0.262 in