CHS 180x25 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 180x25 steel profile weighs 95.6 kg/m (64.22 lb/ft). Cross-sectional area: 12,173.672 mm². Moment of inertia Ix = 3,751.013 cm⁴, Iy = 3,751.013 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	25 mm	0.98 in
Diameter (d)	180 mm	7.09 in
Weight	95.6 kg/m	64.22 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,173.67 mm²	18.869 in²
Moment of inertia (Ix)	3,751.01 cm⁴	90.12 in⁴
Moment of inertia (Iy)	3,751.01 cm⁴	90.12 in⁴
Elastic section modulus (Sx)	416.78 cm³	25.434 in³
Elastic section modulus (Sy)	416.78 cm³	25.434 in³
Plastic section modulus (Zx)	605.83 cm³	36.970 in³
Plastic section modulus (Zy)	605.83 cm³	36.970 in³
Radius of gyration (rx)	5.55 cm	2.185 in
Radius of gyration (ry)	5.55 cm	2.185 in