CHS 180x8 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 180x8 steel profile weighs 33.9 kg/m (22.80 lb/ft). Cross-sectional area: 4,322.831 mm². Moment of inertia Ix = 1,602.041 cm⁴, Iy = 1,602.041 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8 mm	0.31 in
Diameter (d)	180 mm	7.09 in
Weight	33.9 kg/m	22.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,322.83 mm²	6.700 in²
Moment of inertia (Ix)	1,602.04 cm⁴	38.49 in⁴
Moment of inertia (Iy)	1,602.04 cm⁴	38.49 in⁴
Elastic section modulus (Sx)	178 cm³	10.863 in³
Elastic section modulus (Sy)	178 cm³	10.863 in³
Plastic section modulus (Zx)	236.84 cm³	14.453 in³
Plastic section modulus (Zy)	236.84 cm³	14.453 in³
Radius of gyration (rx)	6.09 cm	2.397 in
Radius of gyration (ry)	6.09 cm	2.397 in