CHS 180x6 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 180x6 steel profile weighs 25.8 kg/m (17.30 lb/ft). Cross-sectional area: 3,279.823 mm². Moment of inertia Ix = 1,242.725 cm⁴, Iy = 1,242.725 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6 mm	0.24 in
Diameter (d)	180 mm	7.09 in
Weight	25.8 kg/m	17.30 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,279.82 mm²	5.084 in²
Moment of inertia (Ix)	1,242.72 cm⁴	29.86 in⁴
Moment of inertia (Iy)	1,242.72 cm⁴	29.86 in⁴
Elastic section modulus (Sx)	138.08 cm³	8.426 in³
Elastic section modulus (Sy)	138.08 cm³	8.426 in³
Plastic section modulus (Zx)	181.73 cm³	11.090 in³
Plastic section modulus (Zy)	181.73 cm³	11.090 in³
Radius of gyration (rx)	6.16 cm	2.423 in
Radius of gyration (ry)	6.16 cm	2.423 in