CHS 70x17 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 70x17 steel profile weighs 22.2 kg/m (14.93 lb/ft). Cross-sectional area: 2,830.575 mm². Moment of inertia Ix = 109.614 cm⁴, Iy = 109.614 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	17 mm	0.67 in
Diameter (d)	70 mm	2.76 in
Weight	22.2 kg/m	14.93 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,830.57 mm²	4.387 in²
Moment of inertia (Ix)	109.61 cm⁴	2.63 in⁴
Moment of inertia (Iy)	109.61 cm⁴	2.63 in⁴
Elastic section modulus (Sx)	31.32 cm³	1.911 in³
Elastic section modulus (Sy)	31.32 cm³	1.911 in³
Plastic section modulus (Zx)	49.39 cm³	3.014 in³
Plastic section modulus (Zy)	49.39 cm³	3.014 in³
Radius of gyration (rx)	1.97 cm	0.775 in
Radius of gyration (ry)	1.97 cm	0.775 in