CHS 127x18 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 127x18 steel profile weighs 48.4 kg/m (32.52 lb/ft). Cross-sectional area: 6,163.805 mm². Moment of inertia Ix = 940.365 cm⁴, Iy = 940.365 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	18 mm	0.71 in
Diameter (d)	127 mm	5.00 in
Weight	48.4 kg/m	32.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,163.8 mm²	9.554 in²
Moment of inertia (Ix)	940.37 cm⁴	22.59 in⁴
Moment of inertia (Iy)	940.37 cm⁴	22.59 in⁴
Elastic section modulus (Sx)	148.09 cm³	9.037 in³
Elastic section modulus (Sy)	148.09 cm³	9.037 in³
Plastic section modulus (Zx)	215.8 cm³	13.169 in³
Plastic section modulus (Zy)	215.8 cm³	13.169 in³
Radius of gyration (rx)	3.91 cm	1.538 in
Radius of gyration (ry)	3.91 cm	1.538 in