CHS 203x6 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 203x6 steel profile weighs 29.1 kg/m (19.59 lb/ft). Cross-sectional area: 3,713.363 mm². Moment of inertia Ix = 1,803.07 cm⁴, Iy = 1,803.07 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	6 mm	0.24 in
Diameter (d)	203 mm	7.99 in
Weight	29.1 kg/m	19.59 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,713.36 mm²	5.756 in²
Moment of inertia (Ix)	1,803.07 cm⁴	43.32 in⁴
Moment of inertia (Iy)	1,803.07 cm⁴	43.32 in⁴
Elastic section modulus (Sx)	177.64 cm³	10.840 in³
Elastic section modulus (Sy)	177.64 cm³	10.840 in³
Plastic section modulus (Zx)	232.93 cm³	14.214 in³
Plastic section modulus (Zy)	232.93 cm³	14.214 in³
Radius of gyration (rx)	6.97 cm	2.743 in
Radius of gyration (ry)	6.97 cm	2.743 in