CHS 203x7 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 203x7 steel profile weighs 33.8 kg/m (22.74 lb/ft). Cross-sectional area: 4,310.265 mm². Moment of inertia Ix = 2,072.429 cm⁴, Iy = 2,072.429 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7 mm	0.28 in
Diameter (d)	203 mm	7.99 in
Weight	33.8 kg/m	22.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,310.27 mm²	6.681 in²
Moment of inertia (Ix)	2,072.43 cm⁴	49.79 in⁴
Moment of inertia (Iy)	2,072.43 cm⁴	49.79 in⁴
Elastic section modulus (Sx)	204.18 cm³	12.460 in³
Elastic section modulus (Sy)	204.18 cm³	12.460 in³
Plastic section modulus (Zx)	269.03 cm³	16.417 in³
Plastic section modulus (Zy)	269.03 cm³	16.417 in³
Radius of gyration (rx)	6.93 cm	2.730 in
Radius of gyration (ry)	6.93 cm	2.730 in