CHS 38x5 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 38x5 steel profile weighs 4.1 kg/m (2.74 lb/ft). Cross-sectional area: 518.363 mm². Moment of inertia Ix = 7.218 cm⁴, Iy = 7.218 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	5 mm	0.20 in
Diameter (d)	38 mm	1.50 in
Weight	4.1 kg/m	2.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	518.36 mm²	0.803 in²
Moment of inertia (Ix)	7.22 cm⁴	0.17 in⁴
Moment of inertia (Iy)	7.22 cm⁴	0.17 in⁴
Elastic section modulus (Sx)	3.8 cm³	0.232 in³
Elastic section modulus (Sy)	3.8 cm³	0.232 in³
Plastic section modulus (Zx)	5.49 cm³	0.335 in³
Plastic section modulus (Zy)	5.49 cm³	0.335 in³
Radius of gyration (rx)	1.18 cm	0.465 in
Radius of gyration (ry)	1.18 cm	0.465 in