CHS 159x9 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 159x9 steel profile weighs 33.3 kg/m (22.37 lb/ft). Cross-sectional area: 4,241.15 mm². Moment of inertia Ix = 1,197.118 cm⁴, Iy = 1,197.118 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	9 mm	0.35 in
Diameter (d)	159 mm	6.26 in
Weight	33.3 kg/m	22.37 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,241.15 mm²	6.574 in²
Moment of inertia (Ix)	1,197.12 cm⁴	28.76 in⁴
Moment of inertia (Iy)	1,197.12 cm⁴	28.76 in⁴
Elastic section modulus (Sx)	150.58 cm³	9.189 in³
Elastic section modulus (Sy)	150.58 cm³	9.189 in³
Plastic section modulus (Zx)	202.74 cm³	12.372 in³
Plastic section modulus (Zy)	202.74 cm³	12.372 in³
Radius of gyration (rx)	5.31 cm	2.092 in
Radius of gyration (ry)	5.31 cm	2.092 in