CHS 70x16 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 70x16 steel profile weighs 21.3 kg/m (14.32 lb/ft). Cross-sectional area: 2,714.336 mm². Moment of inertia Ix = 107.623 cm⁴, Iy = 107.623 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	16 mm	0.63 in
Diameter (d)	70 mm	2.76 in
Weight	21.3 kg/m	14.32 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,714.34 mm²	4.207 in²
Moment of inertia (Ix)	107.62 cm⁴	2.59 in⁴
Moment of inertia (Iy)	107.62 cm⁴	2.59 in⁴
Elastic section modulus (Sx)	30.75 cm³	1.876 in³
Elastic section modulus (Sy)	30.75 cm³	1.876 in³
Plastic section modulus (Zx)	48.02 cm³	2.930 in³
Plastic section modulus (Zy)	48.02 cm³	2.930 in³
Radius of gyration (rx)	1.99 cm	0.784 in
Radius of gyration (ry)	1.99 cm	0.784 in