CHS 83x4 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 83x4 steel profile weighs 7.8 kg/m (5.23 lb/ft). Cross-sectional area: 992.743 mm². Moment of inertia Ix = 77.645 cm⁴, Iy = 77.645 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4 mm	0.16 in
Diameter (d)	83 mm	3.27 in
Weight	7.8 kg/m	5.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	992.74 mm²	1.539 in²
Moment of inertia (Ix)	77.64 cm⁴	1.87 in⁴
Moment of inertia (Iy)	77.64 cm⁴	1.87 in⁴
Elastic section modulus (Sx)	18.71 cm³	1.142 in³
Elastic section modulus (Sy)	18.71 cm³	1.142 in³
Plastic section modulus (Zx)	24.99 cm³	1.525 in³
Plastic section modulus (Zy)	24.99 cm³	1.525 in³
Radius of gyration (rx)	2.8 cm	1.101 in
Radius of gyration (ry)	2.8 cm	1.101 in