CHS 25x5 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 25x5 steel profile weighs 2.5 kg/m (1.66 lb/ft). Cross-sectional area: 314.159 mm². Moment of inertia Ix = 1.669 cm⁴, Iy = 1.669 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	5 mm	0.20 in
Diameter (d)	25 mm	0.98 in
Weight	2.5 kg/m	1.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	314.16 mm²	0.487 in²
Moment of inertia (Ix)	1.67 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.67 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.34 cm³	0.081 in³
Elastic section modulus (Sy)	1.34 cm³	0.081 in³
Plastic section modulus (Zx)	2.04 cm³	0.125 in³
Plastic section modulus (Zy)	2.04 cm³	0.125 in³
Radius of gyration (rx)	0.73 cm	0.287 in
Radius of gyration (ry)	0.73 cm	0.287 in