CHS 73x16 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 73x16 steel profile weighs 22.5 kg/m (15.11 lb/ft). Cross-sectional area: 2,865.133 mm². Moment of inertia Ix = 125.529 cm⁴, Iy = 125.529 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	16 mm	0.63 in
Diameter (d)	73 mm	2.87 in
Weight	22.5 kg/m	15.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,865.13 mm²	4.441 in²
Moment of inertia (Ix)	125.53 cm⁴	3.02 in⁴
Moment of inertia (Iy)	125.53 cm⁴	3.02 in⁴
Elastic section modulus (Sx)	34.39 cm³	2.099 in³
Elastic section modulus (Sy)	34.39 cm³	2.099 in³
Plastic section modulus (Zx)	53.35 cm³	3.256 in³
Plastic section modulus (Zy)	53.35 cm³	3.256 in³
Radius of gyration (rx)	2.09 cm	0.824 in
Radius of gyration (ry)	2.09 cm	0.824 in