CHS 25x7 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 25x7 steel profile weighs 3.1 kg/m (2.09 lb/ft). Cross-sectional area: 395.841 mm². Moment of inertia Ix = 1.846 cm⁴, Iy = 1.846 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7 mm	0.28 in
Diameter (d)	25 mm	0.98 in
Weight	3.1 kg/m	2.09 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	395.84 mm²	0.614 in²
Moment of inertia (Ix)	1.85 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.85 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.48 cm³	0.090 in³
Elastic section modulus (Sy)	1.48 cm³	0.090 in³
Plastic section modulus (Zx)	2.38 cm³	0.145 in³
Plastic section modulus (Zy)	2.38 cm³	0.145 in³
Radius of gyration (rx)	0.68 cm	0.269 in
Radius of gyration (ry)	0.68 cm	0.269 in