CHS 133x28 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 133x28 steel profile weighs 72.5 kg/m (48.72 lb/ft). Cross-sectional area: 9,236.282 mm². Moment of inertia Ix = 1,363.391 cm⁴, Iy = 1,363.391 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	28 mm	1.10 in
Diameter (d)	133 mm	5.24 in
Weight	72.5 kg/m	48.72 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,236.28 mm²	14.316 in²
Moment of inertia (Ix)	1,363.39 cm⁴	32.76 in⁴
Moment of inertia (Iy)	1,363.39 cm⁴	32.76 in⁴
Elastic section modulus (Sx)	205.02 cm³	12.511 in³
Elastic section modulus (Sy)	205.02 cm³	12.511 in³
Plastic section modulus (Zx)	316.02 cm³	19.285 in³
Plastic section modulus (Zy)	316.02 cm³	19.285 in³
Radius of gyration (rx)	3.84 cm	1.513 in
Radius of gyration (ry)	3.84 cm	1.513 in