CHS 180x7 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 180x7 steel profile weighs 29.9 kg/m (20.07 lb/ft). Cross-sectional area: 3,804.469 mm². Moment of inertia Ix = 1,425.63 cm⁴, Iy = 1,425.63 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7 mm	0.28 in
Diameter (d)	180 mm	7.09 in
Weight	29.9 kg/m	20.07 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,804.47 mm²	5.897 in²
Moment of inertia (Ix)	1,425.63 cm⁴	34.25 in⁴
Moment of inertia (Iy)	1,425.63 cm⁴	34.25 in⁴
Elastic section modulus (Sx)	158.4 cm³	9.666 in³
Elastic section modulus (Sy)	158.4 cm³	9.666 in³
Plastic section modulus (Zx)	209.62 cm³	12.792 in³
Plastic section modulus (Zy)	209.62 cm³	12.792 in³
Radius of gyration (rx)	6.12 cm	2.410 in
Radius of gyration (ry)	6.12 cm	2.410 in